From fbe199f55fca88ccc67e0d739fe62a00236b50a8 Mon Sep 17 00:00:00 2001
From: Rick Hanlon <rickhanlonii@gmail.com>
Date: Tue, 2 Mar 2021 12:42:50 -0700
Subject: [PATCH 1/9] Clean up Scheduler forks

---
 .codesandbox/ci.json                          |   2 +-
 ...ReactTestUtilsActUnmockedScheduler-test.js |   4 +-
 ...tUnmockedSchedulerWarning-test.internal.js |   2 +-
 .../ReactUnmockedSchedulerWarning-test.js     |   4 +-
 packages/scheduler/index.js                   |   2 +-
 packages/scheduler/npm/index.js               |   4 +-
 packages/scheduler/npm/unstable_no_dom.js     |   7 -
 packages/scheduler/package.json               |   1 -
 ...SchedulerDOM-test.js => Scheduler-test.js} |   9 +-
 .../src/__tests__/SchedulerPostTask-test.js   |   2 -
 .../__tests__/SchedulerPostTaskOnly-test.js   | 275 --------
 ...-test.js => SchedulerSetImmediate-test.js} |  23 +-
 ...OM-test.js => SchedulerSetTimeout-test.js} |  15 +-
 .../SchedulerUMDBundle-test.internal.js       |   3 +-
 .../forks/{SchedulerDOM.js => Scheduler.js}   |  43 +-
 .../scheduler/src/forks/SchedulerNoDOM.js     | 473 --------------
 .../src/forks/SchedulerPostTaskOnly.js        | 598 ------------------
 packages/scheduler/unstable_no_dom.js         |  10 -
 packages/scheduler/unstable_post_task_only.js |  10 -
 .../__tests__/ReactDOMFrameScheduling-test.js |  33 +-
 scripts/rollup/bundles.js                     |  33 -
 21 files changed, 45 insertions(+), 1508 deletions(-)
 delete mode 100644 packages/scheduler/npm/unstable_no_dom.js
 rename packages/scheduler/src/__tests__/{SchedulerDOM-test.js => Scheduler-test.js} (94%)
 delete mode 100644 packages/scheduler/src/__tests__/SchedulerPostTaskOnly-test.js
 rename packages/scheduler/src/__tests__/{SchedulerDOMSetImmediate-test.js => SchedulerSetImmediate-test.js} (93%)
 rename packages/scheduler/src/__tests__/{SchedulerNoDOM-test.js => SchedulerSetTimeout-test.js} (85%)
 rename packages/scheduler/src/forks/{SchedulerDOM.js => Scheduler.js} (93%)
 delete mode 100644 packages/scheduler/src/forks/SchedulerNoDOM.js
 delete mode 100644 packages/scheduler/src/forks/SchedulerPostTaskOnly.js
 delete mode 100644 packages/scheduler/unstable_no_dom.js
 delete mode 100644 packages/scheduler/unstable_post_task_only.js

diff --git a/.codesandbox/ci.json b/.codesandbox/ci.json
index 97114903039b6..8750763b5c212 100644
--- a/.codesandbox/ci.json
+++ b/.codesandbox/ci.json
@@ -1,6 +1,6 @@
 {
   "packages": ["packages/react", "packages/react-dom", "packages/scheduler"],
-  "buildCommand": "build --type=NODE react/index,react-dom/index,react-dom/server,react-dom/test-utils,scheduler/index,scheduler/unstable_no_dom,react/jsx-runtime,react/jsx-dev-runtime",
+  "buildCommand": "build --type=NODE react/index,react-dom/index,react-dom/server,react-dom/test-utils,scheduler/index,react/jsx-runtime,react/jsx-dev-runtime",
   "node": "12",
   "publishDirectory": {
     "react": "build/node_modules/react",
diff --git a/packages/react-dom/src/__tests__/ReactTestUtilsActUnmockedScheduler-test.js b/packages/react-dom/src/__tests__/ReactTestUtilsActUnmockedScheduler-test.js
index 6f1587e7042e1..f7145f657c72d 100644
--- a/packages/react-dom/src/__tests__/ReactTestUtilsActUnmockedScheduler-test.js
+++ b/packages/react-dom/src/__tests__/ReactTestUtilsActUnmockedScheduler-test.js
@@ -33,9 +33,7 @@ function unmount(dom) {
 
 beforeEach(() => {
   jest.resetModules();
-  jest.mock('scheduler', () =>
-    require.requireActual('scheduler/unstable_no_dom'),
-  );
+  jest.unmock('scheduler');
   yields = [];
   React = require('react');
   ReactDOM = require('react-dom');
diff --git a/packages/react-dom/src/__tests__/ReactUnmockedSchedulerWarning-test.internal.js b/packages/react-dom/src/__tests__/ReactUnmockedSchedulerWarning-test.internal.js
index 6c443a832aa1f..501b01336b1b3 100644
--- a/packages/react-dom/src/__tests__/ReactUnmockedSchedulerWarning-test.internal.js
+++ b/packages/react-dom/src/__tests__/ReactUnmockedSchedulerWarning-test.internal.js
@@ -17,7 +17,7 @@ function App() {
 
 beforeEach(() => {
   jest.resetModules();
-  jest.mock('scheduler', () => require('scheduler/unstable_no_dom'));
+  jest.unmock('scheduler');
   React = require('react');
   ReactDOM = require('react-dom');
   ReactFeatureFlags = require('shared/ReactFeatureFlags');
diff --git a/packages/react-dom/src/__tests__/ReactUnmockedSchedulerWarning-test.js b/packages/react-dom/src/__tests__/ReactUnmockedSchedulerWarning-test.js
index 3091c3d1af785..960154dbea253 100644
--- a/packages/react-dom/src/__tests__/ReactUnmockedSchedulerWarning-test.js
+++ b/packages/react-dom/src/__tests__/ReactUnmockedSchedulerWarning-test.js
@@ -16,9 +16,7 @@ function App() {
 
 beforeEach(() => {
   jest.resetModules();
-  jest.mock('scheduler', () =>
-    require.requireActual('scheduler/unstable_no_dom'),
-  );
+  jest.unmock('scheduler');
   React = require('react');
   ReactDOM = require('react-dom');
 });
diff --git a/packages/scheduler/index.js b/packages/scheduler/index.js
index a5e913d1dd26b..db916ce5d4d90 100644
--- a/packages/scheduler/index.js
+++ b/packages/scheduler/index.js
@@ -7,4 +7,4 @@
 
 'use strict';
 
-export * from './src/forks/SchedulerDOM';
+export * from './src/forks/Scheduler';
diff --git a/packages/scheduler/npm/index.js b/packages/scheduler/npm/index.js
index 68a443aa1de8b..77770b0c219e2 100644
--- a/packages/scheduler/npm/index.js
+++ b/packages/scheduler/npm/index.js
@@ -1,8 +1,6 @@
 'use strict';
 
-if (typeof window === 'undefined' || typeof MessageChannel !== 'function') {
-  module.exports = require('./unstable_no_dom');
-} else if (process.env.NODE_ENV === 'production') {
+if (process.env.NODE_ENV === 'production') {
   module.exports = require('./cjs/scheduler.production.min.js');
 } else {
   module.exports = require('./cjs/scheduler.development.js');
diff --git a/packages/scheduler/npm/unstable_no_dom.js b/packages/scheduler/npm/unstable_no_dom.js
deleted file mode 100644
index 2ba763765a0c3..0000000000000
--- a/packages/scheduler/npm/unstable_no_dom.js
+++ /dev/null
@@ -1,7 +0,0 @@
-'use strict';
-
-if (process.env.NODE_ENV === 'production') {
-  module.exports = require('./cjs/scheduler-unstable_no_dom.production.min.js');
-} else {
-  module.exports = require('./cjs/scheduler-unstable_no_dom.development.js');
-}
diff --git a/packages/scheduler/package.json b/packages/scheduler/package.json
index e8ac46571b73b..b22fc085290e5 100644
--- a/packages/scheduler/package.json
+++ b/packages/scheduler/package.json
@@ -26,7 +26,6 @@
     "build-info.json",
     "index.js",
     "unstable_mock.js",
-    "unstable_no_dom.js",
     "unstable_post_task.js",
     "cjs/",
     "umd/"
diff --git a/packages/scheduler/src/__tests__/SchedulerDOM-test.js b/packages/scheduler/src/__tests__/Scheduler-test.js
similarity index 94%
rename from packages/scheduler/src/__tests__/SchedulerDOM-test.js
rename to packages/scheduler/src/__tests__/Scheduler-test.js
index f6dd4be5db18d..707b9eb86cc6d 100644
--- a/packages/scheduler/src/__tests__/SchedulerDOM-test.js
+++ b/packages/scheduler/src/__tests__/Scheduler-test.js
@@ -32,9 +32,7 @@ let NormalPriority;
 describe('SchedulerBrowser', () => {
   beforeEach(() => {
     jest.resetModules();
-
-    // Un-mock scheduler
-    jest.mock('scheduler', () => require.requireActual('scheduler'));
+    jest.unmock('scheduler');
 
     runtime = installMockBrowserRuntime();
     performance = global.performance;
@@ -71,11 +69,6 @@ describe('SchedulerBrowser', () => {
     const window = {};
     global.window = window;
 
-    // TODO: Scheduler no longer requires these methods to be polyfilled. But
-    // maybe we want to continue warning if they don't exist, to preserve the
-    // option to rely on it in the future?
-    window.requestAnimationFrame = window.cancelAnimationFrame = () => {};
-
     window.setTimeout = (cb, delay) => {
       const id = timerIDCounter++;
       log(`Set Timer`);
diff --git a/packages/scheduler/src/__tests__/SchedulerPostTask-test.js b/packages/scheduler/src/__tests__/SchedulerPostTask-test.js
index 19b6e330b82fb..883452120b122 100644
--- a/packages/scheduler/src/__tests__/SchedulerPostTask-test.js
+++ b/packages/scheduler/src/__tests__/SchedulerPostTask-test.js
@@ -30,8 +30,6 @@ let IdlePriority;
 describe('SchedulerPostTask', () => {
   beforeEach(() => {
     jest.resetModules();
-
-    // Un-mock scheduler
     jest.mock('scheduler', () =>
       require.requireActual('scheduler/unstable_post_task'),
     );
diff --git a/packages/scheduler/src/__tests__/SchedulerPostTaskOnly-test.js b/packages/scheduler/src/__tests__/SchedulerPostTaskOnly-test.js
deleted file mode 100644
index bc25f3dbb148e..0000000000000
--- a/packages/scheduler/src/__tests__/SchedulerPostTaskOnly-test.js
+++ /dev/null
@@ -1,275 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @emails react-core
- * @jest-environment node
- */
-
-/* eslint-disable no-for-of-loops/no-for-of-loops */
-
-'use strict';
-
-let Scheduler;
-let runtime;
-let performance;
-let cancelCallback;
-let scheduleCallback;
-let NormalPriority;
-
-describe('SchedulerPostTaskOnly', () => {
-  beforeEach(() => {
-    if (!process.env.IS_BUILD) {
-      jest.resetModules();
-
-      // Un-mock scheduler
-      jest.mock('scheduler', () =>
-        require.requireActual('scheduler/unstable_post_task_only'),
-      );
-
-      runtime = installMockBrowserRuntime();
-      performance = window.performance;
-      Scheduler = require('scheduler');
-      cancelCallback = Scheduler.unstable_cancelCallback;
-      scheduleCallback = Scheduler.unstable_scheduleCallback;
-      NormalPriority = Scheduler.unstable_NormalPriority;
-    }
-  });
-
-  afterEach(() => {
-    if (!process.env.IS_BUILD) {
-      if (!runtime.isLogEmpty()) {
-        throw Error('Test exited without clearing log.');
-      }
-    }
-  });
-
-  function installMockBrowserRuntime() {
-    let hasPendingTask = false;
-    let timerIDCounter = 0;
-    let eventLog = [];
-
-    // Mock window functions
-    const window = {};
-    global.window = window;
-
-    // TODO: Scheduler no longer requires these methods to be polyfilled. But
-    // maybe we want to continue warning if they don't exist, to preserve the
-    // option to rely on it in the future?
-    window.requestAnimationFrame = window.cancelAnimationFrame = () => {};
-
-    let currentTime = 0;
-    window.performance = {
-      now() {
-        return currentTime;
-      },
-    };
-
-    window.setTimeout = (cb, delay) => {
-      const id = timerIDCounter++;
-      log(`Set Timer`);
-      // TODO
-      return id;
-    };
-    window.clearTimeout = id => {
-      // TODO
-    };
-
-    // Mock browser scheduler.
-    const scheduler = {};
-    global.scheduler = scheduler;
-
-    let nextTask;
-    scheduler.postTask = function(callback) {
-      if (hasPendingTask) {
-        throw Error('Task already scheduled');
-      }
-      log('Post Task');
-      hasPendingTask = true;
-      nextTask = callback;
-    };
-
-    function ensureLogIsEmpty() {
-      if (eventLog.length !== 0) {
-        throw Error('Log is not empty. Call assertLog before continuing.');
-      }
-    }
-
-    function advanceTime(ms) {
-      currentTime += ms;
-    }
-
-    function fireNextTask() {
-      ensureLogIsEmpty();
-      if (!hasPendingTask) {
-        throw Error('No task was scheduled');
-      }
-      hasPendingTask = false;
-
-      log('Task Event');
-
-      // If there's a continuation, it will call postTask again
-      // which will set nextTask. That means we need to clear
-      // nextTask before the invocation, otherwise we would
-      // delete the continuation task.
-      const task = nextTask;
-      nextTask = null;
-      task();
-    }
-
-    function log(val) {
-      eventLog.push(val);
-    }
-
-    function isLogEmpty() {
-      return eventLog.length === 0;
-    }
-
-    function assertLog(expected) {
-      const actual = eventLog;
-      eventLog = [];
-      expect(actual).toEqual(expected);
-    }
-
-    return {
-      advanceTime,
-      fireNextTask,
-      log,
-      isLogEmpty,
-      assertLog,
-    };
-  }
-
-  // @gate source
-  it('task that finishes before deadline', () => {
-    scheduleCallback(NormalPriority, () => {
-      runtime.log('Task');
-    });
-    runtime.assertLog(['Post Task']);
-    runtime.fireNextTask();
-    runtime.assertLog(['Task Event', 'Task']);
-  });
-
-  // @gate source
-  it('task with continuation', () => {
-    scheduleCallback(NormalPriority, () => {
-      runtime.log('Task');
-      while (!Scheduler.unstable_shouldYield()) {
-        runtime.advanceTime(1);
-      }
-      runtime.log(`Yield at ${performance.now()}ms`);
-      return () => {
-        runtime.log('Continuation');
-      };
-    });
-    runtime.assertLog(['Post Task']);
-
-    runtime.fireNextTask();
-    runtime.assertLog(['Task Event', 'Task', 'Yield at 5ms', 'Post Task']);
-
-    runtime.fireNextTask();
-    runtime.assertLog(['Task Event', 'Continuation']);
-  });
-
-  // @gate source
-  it('multiple tasks', () => {
-    scheduleCallback(NormalPriority, () => {
-      runtime.log('A');
-    });
-    scheduleCallback(NormalPriority, () => {
-      runtime.log('B');
-    });
-    runtime.assertLog(['Post Task']);
-    runtime.fireNextTask();
-    runtime.assertLog(['Task Event', 'A', 'B']);
-  });
-
-  // @gate source
-  it('multiple tasks with a yield in between', () => {
-    scheduleCallback(NormalPriority, () => {
-      runtime.log('A');
-      runtime.advanceTime(4999);
-    });
-    scheduleCallback(NormalPriority, () => {
-      runtime.log('B');
-    });
-    runtime.assertLog(['Post Task']);
-    runtime.fireNextTask();
-    runtime.assertLog([
-      'Task Event',
-      'A',
-      // Ran out of time. Post a continuation event.
-      'Post Task',
-    ]);
-    runtime.fireNextTask();
-    runtime.assertLog(['Task Event', 'B']);
-  });
-
-  // @gate source
-  it('cancels tasks', () => {
-    const task = scheduleCallback(NormalPriority, () => {
-      runtime.log('Task');
-    });
-    runtime.assertLog(['Post Task']);
-    cancelCallback(task);
-    runtime.assertLog([]);
-  });
-
-  // @gate source
-  it('throws when a task errors then continues in a new event', () => {
-    scheduleCallback(NormalPriority, () => {
-      runtime.log('Oops!');
-      throw Error('Oops!');
-    });
-    scheduleCallback(NormalPriority, () => {
-      runtime.log('Yay');
-    });
-    runtime.assertLog(['Post Task']);
-
-    expect(() => runtime.fireNextTask()).toThrow('Oops!');
-    runtime.assertLog(['Task Event', 'Oops!', 'Post Task']);
-
-    runtime.fireNextTask();
-    runtime.assertLog(['Task Event', 'Yay']);
-  });
-
-  // @gate source
-  it('schedule new task after queue has emptied', () => {
-    scheduleCallback(NormalPriority, () => {
-      runtime.log('A');
-    });
-
-    runtime.assertLog(['Post Task']);
-    runtime.fireNextTask();
-    runtime.assertLog(['Task Event', 'A']);
-
-    scheduleCallback(NormalPriority, () => {
-      runtime.log('B');
-    });
-    runtime.assertLog(['Post Task']);
-    runtime.fireNextTask();
-    runtime.assertLog(['Task Event', 'B']);
-  });
-
-  // @gate source
-  it('schedule new task after a cancellation', () => {
-    const handle = scheduleCallback(NormalPriority, () => {
-      runtime.log('A');
-    });
-
-    runtime.assertLog(['Post Task']);
-    cancelCallback(handle);
-
-    runtime.fireNextTask();
-    runtime.assertLog(['Task Event']);
-
-    scheduleCallback(NormalPriority, () => {
-      runtime.log('B');
-    });
-    runtime.assertLog(['Post Task']);
-    runtime.fireNextTask();
-    runtime.assertLog(['Task Event', 'B']);
-  });
-});
diff --git a/packages/scheduler/src/__tests__/SchedulerDOMSetImmediate-test.js b/packages/scheduler/src/__tests__/SchedulerSetImmediate-test.js
similarity index 93%
rename from packages/scheduler/src/__tests__/SchedulerDOMSetImmediate-test.js
rename to packages/scheduler/src/__tests__/SchedulerSetImmediate-test.js
index 04fecab129518..52ff5d589a8ae 100644
--- a/packages/scheduler/src/__tests__/SchedulerDOMSetImmediate-test.js
+++ b/packages/scheduler/src/__tests__/SchedulerSetImmediate-test.js
@@ -18,6 +18,7 @@ let performance;
 let cancelCallback;
 let scheduleCallback;
 let NormalPriority;
+let UserBlockingPriority;
 
 // The Scheduler implementation uses browser APIs like `MessageChannel` and
 // `setTimeout` to schedule work on the main thread. Most of our tests treat
@@ -32,9 +33,7 @@ let NormalPriority;
 describe('SchedulerDOMSetImmediate', () => {
   beforeEach(() => {
     jest.resetModules();
-
-    // Un-mock scheduler
-    jest.mock('scheduler', () => require.requireActual('scheduler'));
+    jest.unmock('scheduler');
 
     runtime = installMockBrowserRuntime();
     performance = global.performance;
@@ -42,6 +41,7 @@ describe('SchedulerDOMSetImmediate', () => {
     cancelCallback = Scheduler.unstable_cancelCallback;
     scheduleCallback = Scheduler.unstable_scheduleCallback;
     NormalPriority = Scheduler.unstable_NormalPriority;
+    UserBlockingPriority = Scheduler.unstable_UserBlockingPriority;
   });
 
   afterEach(() => {
@@ -69,11 +69,6 @@ describe('SchedulerDOMSetImmediate', () => {
     const window = {};
     global.window = window;
 
-    // TODO: Scheduler no longer requires these methods to be polyfilled. But
-    // maybe we want to continue warning if they don't exist, to preserve the
-    // option to rely on it in the future?
-    window.requestAnimationFrame = window.cancelAnimationFrame = () => {};
-
     window.setTimeout = (cb, delay) => {
       const id = timerIDCounter++;
       log(`Set Timer`);
@@ -189,6 +184,18 @@ describe('SchedulerDOMSetImmediate', () => {
     runtime.assertLog(['setImmediate Callback', 'A', 'B']);
   });
 
+  it('multiple tasks at different priority', () => {
+    scheduleCallback(NormalPriority, () => {
+      runtime.log('A');
+    });
+    scheduleCallback(UserBlockingPriority, () => {
+      runtime.log('B');
+    });
+    runtime.assertLog(['Set Immediate']);
+    runtime.fireSetImmediate();
+    runtime.assertLog(['setImmediate Callback', 'B', 'A']);
+  });
+
   it('multiple tasks with a yield in between', () => {
     scheduleCallback(NormalPriority, () => {
       runtime.log('A');
diff --git a/packages/scheduler/src/__tests__/SchedulerNoDOM-test.js b/packages/scheduler/src/__tests__/SchedulerSetTimeout-test.js
similarity index 85%
rename from packages/scheduler/src/__tests__/SchedulerNoDOM-test.js
rename to packages/scheduler/src/__tests__/SchedulerSetTimeout-test.js
index 8d3920fd920f9..9080c77c9109e 100644
--- a/packages/scheduler/src/__tests__/SchedulerNoDOM-test.js
+++ b/packages/scheduler/src/__tests__/SchedulerSetTimeout-test.js
@@ -5,6 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  *
  * @emails react-core
+ * @jest-environment node
  */
 
 'use strict';
@@ -16,21 +17,19 @@ let UserBlockingPriority;
 let NormalPriority;
 
 describe('SchedulerNoDOM', () => {
-  // If Scheduler runs in a non-DOM environment, it falls back to a naive
-  // implementation using setTimeout. This only meant to be used for testing
-  // purposes, like with jest's fake timer API.
+  // Scheduler falls back to a naive implementation using setTimeout.
+  // This is only meant to be used for testing purposes, like with jest's fake timer API.
   beforeEach(() => {
     jest.resetModules();
     jest.useFakeTimers();
+    jest.unmock('scheduler');
 
-    // Un-mock scheduler
-    jest.mock('scheduler', () =>
-      require.requireActual('scheduler/unstable_no_dom'),
-    );
+    const window = {};
+    window.setTimeout = setTimeout;
+    global.window = window;
 
     Scheduler = require('scheduler');
     scheduleCallback = Scheduler.unstable_scheduleCallback;
-    ImmediatePriority = Scheduler.unstable_ImmediatePriority;
     UserBlockingPriority = Scheduler.unstable_UserBlockingPriority;
     NormalPriority = Scheduler.unstable_NormalPriority;
   });
diff --git a/packages/scheduler/src/__tests__/SchedulerUMDBundle-test.internal.js b/packages/scheduler/src/__tests__/SchedulerUMDBundle-test.internal.js
index fde4ee8af20e3..6b13ad88d259b 100644
--- a/packages/scheduler/src/__tests__/SchedulerUMDBundle-test.internal.js
+++ b/packages/scheduler/src/__tests__/SchedulerUMDBundle-test.internal.js
@@ -21,8 +21,7 @@ describe('Scheduling UMD bundle', () => {
     global.__UMD__ = true;
 
     jest.resetModules();
-
-    jest.mock('scheduler', () => require.requireActual('scheduler'));
+    jest.unmock('scheduler');
 
     // Mock a browser environment since we're testing UMD modules.
     global.window = {
diff --git a/packages/scheduler/src/forks/SchedulerDOM.js b/packages/scheduler/src/forks/Scheduler.js
similarity index 93%
rename from packages/scheduler/src/forks/SchedulerDOM.js
rename to packages/scheduler/src/forks/Scheduler.js
index aa72972296b7a..28d3becd809f3 100644
--- a/packages/scheduler/src/forks/SchedulerDOM.js
+++ b/packages/scheduler/src/forks/Scheduler.js
@@ -85,34 +85,12 @@ var isHostCallbackScheduled = false;
 var isHostTimeoutScheduled = false;
 
 // Capture local references to native APIs, in case a polyfill overrides them.
-const setTimeout = window.setTimeout;
-const clearTimeout = window.clearTimeout;
-const setImmediate = window.setImmediate; // IE and Node.js + jsdom
-
-if (typeof console !== 'undefined') {
-  // TODO: Scheduler no longer requires these methods to be polyfilled. But
-  // maybe we want to continue warning if they don't exist, to preserve the
-  // option to rely on it in the future?
-  const requestAnimationFrame = window.requestAnimationFrame;
-  const cancelAnimationFrame = window.cancelAnimationFrame;
-
-  if (typeof requestAnimationFrame !== 'function') {
-    // Using console['error'] to evade Babel and ESLint
-    console['error'](
-      "This browser doesn't support requestAnimationFrame. " +
-        'Make sure that you load a ' +
-        'polyfill in older browsers. https://reactjs.org/link/react-polyfills',
-    );
-  }
-  if (typeof cancelAnimationFrame !== 'function') {
-    // Using console['error'] to evade Babel and ESLint
-    console['error'](
-      "This browser doesn't support cancelAnimationFrame. " +
-        'Make sure that you load a ' +
-        'polyfill in older browsers. https://reactjs.org/link/react-polyfills',
-    );
-  }
-}
+const setTimeout =
+  typeof window !== 'undefined' ? window.setTimeout : setTimeout;
+const clearTimeout =
+  typeof window !== 'undefined' ? window.clearTimeout : clearTimeout;
+const setImmediate =
+  typeof window !== 'undefined' ? window.setImmediate : setImmediate; // IE and Node.js + jsdom
 
 function advanceTimers(currentTime) {
   // Check for tasks that are no longer delayed and add them to the queue.
@@ -567,13 +545,20 @@ if (typeof setImmediate === 'function') {
   schedulePerformWorkUntilDeadline = () => {
     setImmediate(performWorkUntilDeadline);
   };
-} else {
+} else if (typeof MessageChannel !== 'undefined') {
+  // DOM and Worker environments.
+  // We prefer MessageChannel because of the 4ms setTimeout clamping.
   const channel = new MessageChannel();
   const port = channel.port2;
   channel.port1.onmessage = performWorkUntilDeadline;
   schedulePerformWorkUntilDeadline = () => {
     port.postMessage(null);
   };
+} else {
+  // We should only fallback here in non-browser environments.
+  schedulePerformWorkUntilDeadline = () => {
+    setTimeout(performWorkUntilDeadline, 0);
+  };
 }
 
 function requestHostCallback(callback) {
diff --git a/packages/scheduler/src/forks/SchedulerNoDOM.js b/packages/scheduler/src/forks/SchedulerNoDOM.js
deleted file mode 100644
index ed6d7891fd24c..0000000000000
--- a/packages/scheduler/src/forks/SchedulerNoDOM.js
+++ /dev/null
@@ -1,473 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- */
-
-/* eslint-disable no-var */
-
-import {
-  enableSchedulerDebugging,
-  enableProfiling,
-} from '../SchedulerFeatureFlags';
-import {push, pop, peek} from '../SchedulerMinHeap';
-
-// TODO: Use symbols?
-import {
-  ImmediatePriority,
-  UserBlockingPriority,
-  NormalPriority,
-  LowPriority,
-  IdlePriority,
-} from '../SchedulerPriorities';
-import {
-  markTaskRun,
-  markTaskYield,
-  markTaskCompleted,
-  markTaskCanceled,
-  markTaskErrored,
-  markSchedulerSuspended,
-  markSchedulerUnsuspended,
-  markTaskStart,
-  stopLoggingProfilingEvents,
-  startLoggingProfilingEvents,
-} from '../SchedulerProfiling';
-
-// Max 31 bit integer. The max integer size in V8 for 32-bit systems.
-// Math.pow(2, 30) - 1
-// 0b111111111111111111111111111111
-var maxSigned31BitInt = 1073741823;
-
-// Times out immediately
-var IMMEDIATE_PRIORITY_TIMEOUT = -1;
-// Eventually times out
-var USER_BLOCKING_PRIORITY_TIMEOUT = 250;
-var NORMAL_PRIORITY_TIMEOUT = 5000;
-var LOW_PRIORITY_TIMEOUT = 10000;
-// Never times out
-var IDLE_PRIORITY_TIMEOUT = maxSigned31BitInt;
-
-// Tasks are stored on a min heap
-var taskQueue = [];
-var timerQueue = [];
-
-// Incrementing id counter. Used to maintain insertion order.
-var taskIdCounter = 1;
-
-// Pausing the scheduler is useful for debugging.
-var isSchedulerPaused = false;
-
-var currentTask = null;
-var currentPriorityLevel = NormalPriority;
-
-// This is set while performing work, to prevent re-entrancy.
-var isPerformingWork = false;
-
-var isHostCallbackScheduled = false;
-var isHostTimeoutScheduled = false;
-
-let getCurrentTime;
-const hasPerformanceNow =
-  typeof performance === 'object' && typeof performance.now === 'function';
-
-if (hasPerformanceNow) {
-  const localPerformance = performance;
-  getCurrentTime = () => localPerformance.now();
-} else {
-  const localDate = Date;
-  const initialTime = localDate.now();
-  getCurrentTime = () => localDate.now() - initialTime;
-}
-
-function advanceTimers(currentTime) {
-  // Check for tasks that are no longer delayed and add them to the queue.
-  let timer = peek(timerQueue);
-  while (timer !== null) {
-    if (timer.callback === null) {
-      // Timer was cancelled.
-      pop(timerQueue);
-    } else if (timer.startTime <= currentTime) {
-      // Timer fired. Transfer to the task queue.
-      pop(timerQueue);
-      timer.sortIndex = timer.expirationTime;
-      push(taskQueue, timer);
-      if (enableProfiling) {
-        markTaskStart(timer, currentTime);
-        timer.isQueued = true;
-      }
-    } else {
-      // Remaining timers are pending.
-      return;
-    }
-    timer = peek(timerQueue);
-  }
-}
-
-function handleTimeout(currentTime) {
-  isHostTimeoutScheduled = false;
-  advanceTimers(currentTime);
-
-  if (!isHostCallbackScheduled) {
-    if (peek(taskQueue) !== null) {
-      isHostCallbackScheduled = true;
-      requestHostCallback(flushWork);
-    } else {
-      const firstTimer = peek(timerQueue);
-      if (firstTimer !== null) {
-        requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
-      }
-    }
-  }
-}
-
-function flushWork(hasTimeRemaining, initialTime) {
-  if (enableProfiling) {
-    markSchedulerUnsuspended(initialTime);
-  }
-
-  // We'll need a host callback the next time work is scheduled.
-  isHostCallbackScheduled = false;
-  if (isHostTimeoutScheduled) {
-    // We scheduled a timeout but it's no longer needed. Cancel it.
-    isHostTimeoutScheduled = false;
-    cancelHostTimeout();
-  }
-
-  isPerformingWork = true;
-  const previousPriorityLevel = currentPriorityLevel;
-  try {
-    if (enableProfiling) {
-      try {
-        return workLoop(hasTimeRemaining, initialTime);
-      } catch (error) {
-        if (currentTask !== null) {
-          const currentTime = getCurrentTime();
-          markTaskErrored(currentTask, currentTime);
-          currentTask.isQueued = false;
-        }
-        throw error;
-      }
-    } else {
-      // No catch in prod code path.
-      return workLoop(hasTimeRemaining, initialTime);
-    }
-  } finally {
-    currentTask = null;
-    currentPriorityLevel = previousPriorityLevel;
-    isPerformingWork = false;
-    if (enableProfiling) {
-      const currentTime = getCurrentTime();
-      markSchedulerSuspended(currentTime);
-    }
-  }
-}
-
-function workLoop(hasTimeRemaining, initialTime) {
-  let currentTime = initialTime;
-  advanceTimers(currentTime);
-  currentTask = peek(taskQueue);
-  while (
-    currentTask !== null &&
-    !(enableSchedulerDebugging && isSchedulerPaused)
-  ) {
-    if (
-      currentTask.expirationTime > currentTime &&
-      (!hasTimeRemaining || shouldYieldToHost())
-    ) {
-      // This currentTask hasn't expired, and we've reached the deadline.
-      break;
-    }
-    const callback = currentTask.callback;
-    if (typeof callback === 'function') {
-      currentTask.callback = null;
-      currentPriorityLevel = currentTask.priorityLevel;
-      const didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
-      if (enableProfiling) {
-        markTaskRun(currentTask, currentTime);
-      }
-      const continuationCallback = callback(didUserCallbackTimeout);
-      currentTime = getCurrentTime();
-      if (typeof continuationCallback === 'function') {
-        currentTask.callback = continuationCallback;
-        if (enableProfiling) {
-          markTaskYield(currentTask, currentTime);
-        }
-      } else {
-        if (enableProfiling) {
-          markTaskCompleted(currentTask, currentTime);
-          currentTask.isQueued = false;
-        }
-        if (currentTask === peek(taskQueue)) {
-          pop(taskQueue);
-        }
-      }
-      advanceTimers(currentTime);
-    } else {
-      pop(taskQueue);
-    }
-    currentTask = peek(taskQueue);
-  }
-  // Return whether there's additional work
-  if (currentTask !== null) {
-    return true;
-  } else {
-    const firstTimer = peek(timerQueue);
-    if (firstTimer !== null) {
-      requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
-    }
-    return false;
-  }
-}
-
-function unstable_runWithPriority(priorityLevel, eventHandler) {
-  switch (priorityLevel) {
-    case ImmediatePriority:
-    case UserBlockingPriority:
-    case NormalPriority:
-    case LowPriority:
-    case IdlePriority:
-      break;
-    default:
-      priorityLevel = NormalPriority;
-  }
-
-  var previousPriorityLevel = currentPriorityLevel;
-  currentPriorityLevel = priorityLevel;
-
-  try {
-    return eventHandler();
-  } finally {
-    currentPriorityLevel = previousPriorityLevel;
-  }
-}
-
-function unstable_next(eventHandler) {
-  var priorityLevel;
-  switch (currentPriorityLevel) {
-    case ImmediatePriority:
-    case UserBlockingPriority:
-    case NormalPriority:
-      // Shift down to normal priority
-      priorityLevel = NormalPriority;
-      break;
-    default:
-      // Anything lower than normal priority should remain at the current level.
-      priorityLevel = currentPriorityLevel;
-      break;
-  }
-
-  var previousPriorityLevel = currentPriorityLevel;
-  currentPriorityLevel = priorityLevel;
-
-  try {
-    return eventHandler();
-  } finally {
-    currentPriorityLevel = previousPriorityLevel;
-  }
-}
-
-function unstable_wrapCallback(callback) {
-  var parentPriorityLevel = currentPriorityLevel;
-  return function() {
-    // This is a fork of runWithPriority, inlined for performance.
-    var previousPriorityLevel = currentPriorityLevel;
-    currentPriorityLevel = parentPriorityLevel;
-
-    try {
-      return callback.apply(this, arguments);
-    } finally {
-      currentPriorityLevel = previousPriorityLevel;
-    }
-  };
-}
-
-function unstable_scheduleCallback(priorityLevel, callback, options) {
-  var currentTime = getCurrentTime();
-
-  var startTime;
-  if (typeof options === 'object' && options !== null) {
-    var delay = options.delay;
-    if (typeof delay === 'number' && delay > 0) {
-      startTime = currentTime + delay;
-    } else {
-      startTime = currentTime;
-    }
-  } else {
-    startTime = currentTime;
-  }
-
-  var timeout;
-  switch (priorityLevel) {
-    case ImmediatePriority:
-      timeout = IMMEDIATE_PRIORITY_TIMEOUT;
-      break;
-    case UserBlockingPriority:
-      timeout = USER_BLOCKING_PRIORITY_TIMEOUT;
-      break;
-    case IdlePriority:
-      timeout = IDLE_PRIORITY_TIMEOUT;
-      break;
-    case LowPriority:
-      timeout = LOW_PRIORITY_TIMEOUT;
-      break;
-    case NormalPriority:
-    default:
-      timeout = NORMAL_PRIORITY_TIMEOUT;
-      break;
-  }
-
-  var expirationTime = startTime + timeout;
-
-  var newTask = {
-    id: taskIdCounter++,
-    callback,
-    priorityLevel,
-    startTime,
-    expirationTime,
-    sortIndex: -1,
-  };
-  if (enableProfiling) {
-    newTask.isQueued = false;
-  }
-
-  if (startTime > currentTime) {
-    // This is a delayed task.
-    newTask.sortIndex = startTime;
-    push(timerQueue, newTask);
-    if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
-      // All tasks are delayed, and this is the task with the earliest delay.
-      if (isHostTimeoutScheduled) {
-        // Cancel an existing timeout.
-        cancelHostTimeout();
-      } else {
-        isHostTimeoutScheduled = true;
-      }
-      // Schedule a timeout.
-      requestHostTimeout(handleTimeout, startTime - currentTime);
-    }
-  } else {
-    newTask.sortIndex = expirationTime;
-    push(taskQueue, newTask);
-    if (enableProfiling) {
-      markTaskStart(newTask, currentTime);
-      newTask.isQueued = true;
-    }
-    // Schedule a host callback, if needed. If we're already performing work,
-    // wait until the next time we yield.
-    if (!isHostCallbackScheduled && !isPerformingWork) {
-      isHostCallbackScheduled = true;
-      requestHostCallback(flushWork);
-    }
-  }
-
-  return newTask;
-}
-
-function unstable_pauseExecution() {
-  isSchedulerPaused = true;
-}
-
-function unstable_continueExecution() {
-  isSchedulerPaused = false;
-  if (!isHostCallbackScheduled && !isPerformingWork) {
-    isHostCallbackScheduled = true;
-    requestHostCallback(flushWork);
-  }
-}
-
-function unstable_getFirstCallbackNode() {
-  return peek(taskQueue);
-}
-
-function unstable_cancelCallback(task) {
-  if (enableProfiling) {
-    if (task.isQueued) {
-      const currentTime = getCurrentTime();
-      markTaskCanceled(task, currentTime);
-      task.isQueued = false;
-    }
-  }
-
-  // Null out the callback to indicate the task has been canceled. (Can't
-  // remove from the queue because you can't remove arbitrary nodes from an
-  // array based heap, only the first one.)
-  task.callback = null;
-}
-
-function unstable_getCurrentPriorityLevel() {
-  return currentPriorityLevel;
-}
-
-// If this accidentally gets imported in a non-browser environment, e.g. JavaScriptCore,
-// fallback to a naive implementation.
-let _callback = null;
-let _timeoutID = null;
-const _flushCallback = function() {
-  if (_callback !== null) {
-    try {
-      const currentTime = getCurrentTime();
-      const hasRemainingTime = true;
-      _callback(hasRemainingTime, currentTime);
-      _callback = null;
-    } catch (e) {
-      setTimeout(_flushCallback, 0);
-      throw e;
-    }
-  }
-};
-
-function requestHostCallback(cb) {
-  if (_callback !== null) {
-    // Protect against re-entrancy.
-    setTimeout(requestHostCallback, 0, cb);
-  } else {
-    _callback = cb;
-    setTimeout(_flushCallback, 0);
-  }
-}
-
-function requestHostTimeout(cb, ms) {
-  _timeoutID = setTimeout(cb, ms);
-}
-
-function cancelHostTimeout() {
-  clearTimeout(_timeoutID);
-}
-
-function shouldYieldToHost() {
-  return false;
-}
-
-function forceFrameRate() {}
-
-function requestPaint() {}
-
-export {
-  ImmediatePriority as unstable_ImmediatePriority,
-  UserBlockingPriority as unstable_UserBlockingPriority,
-  NormalPriority as unstable_NormalPriority,
-  IdlePriority as unstable_IdlePriority,
-  LowPriority as unstable_LowPriority,
-  unstable_runWithPriority,
-  unstable_next,
-  unstable_scheduleCallback,
-  unstable_cancelCallback,
-  unstable_wrapCallback,
-  unstable_getCurrentPriorityLevel,
-  shouldYieldToHost as unstable_shouldYield,
-  requestPaint as unstable_requestPaint,
-  unstable_continueExecution,
-  unstable_pauseExecution,
-  unstable_getFirstCallbackNode,
-  getCurrentTime as unstable_now,
-  forceFrameRate as unstable_forceFrameRate,
-};
-
-export const unstable_Profiling = enableProfiling
-  ? {
-      startLoggingProfilingEvents,
-      stopLoggingProfilingEvents,
-    }
-  : null;
diff --git a/packages/scheduler/src/forks/SchedulerPostTaskOnly.js b/packages/scheduler/src/forks/SchedulerPostTaskOnly.js
deleted file mode 100644
index 0f7e1b99e2526..0000000000000
--- a/packages/scheduler/src/forks/SchedulerPostTaskOnly.js
+++ /dev/null
@@ -1,598 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- */
-
-/* eslint-disable no-var */
-
-import {
-  enableSchedulerDebugging,
-  enableProfiling,
-} from '../SchedulerFeatureFlags';
-
-import {push, pop, peek} from '../SchedulerMinHeap';
-
-// TODO: Use symbols?
-import {
-  ImmediatePriority,
-  UserBlockingPriority,
-  NormalPriority,
-  LowPriority,
-  IdlePriority,
-} from '../SchedulerPriorities';
-import {
-  markTaskRun,
-  markTaskYield,
-  markTaskCompleted,
-  markTaskCanceled,
-  markTaskErrored,
-  markSchedulerSuspended,
-  markSchedulerUnsuspended,
-  markTaskStart,
-  stopLoggingProfilingEvents,
-  startLoggingProfilingEvents,
-} from '../SchedulerProfiling';
-
-import {enableIsInputPending} from '../SchedulerFeatureFlags';
-
-const perf = window.performance;
-
-function getCurrentTime() {
-  return perf.now();
-}
-
-// Max 31 bit integer. The max integer size in V8 for 32-bit systems.
-// Math.pow(2, 30) - 1
-// 0b111111111111111111111111111111
-var maxSigned31BitInt = 1073741823;
-
-// Times out immediately
-var IMMEDIATE_PRIORITY_TIMEOUT = -1;
-// Eventually times out
-var USER_BLOCKING_PRIORITY_TIMEOUT = 250;
-var NORMAL_PRIORITY_TIMEOUT = 5000;
-var LOW_PRIORITY_TIMEOUT = 10000;
-// Never times out
-var IDLE_PRIORITY_TIMEOUT = maxSigned31BitInt;
-
-// Tasks are stored on a min heap
-var taskQueue = [];
-var timerQueue = [];
-
-// Incrementing id counter. Used to maintain insertion order.
-var taskIdCounter = 1;
-
-// Pausing the scheduler is useful for debugging.
-var isSchedulerPaused = false;
-
-var currentTask = null;
-var currentPriorityLevel = NormalPriority;
-
-// This is set while performing work, to prevent re-entrancy.
-var isPerformingWork = false;
-
-var isHostCallbackScheduled = false;
-var isHostTimeoutScheduled = false;
-
-// Capture local references to native APIs, in case a polyfill overrides them.
-const setTimeout = window.setTimeout;
-const clearTimeout = window.clearTimeout;
-
-if (typeof console !== 'undefined') {
-  // TODO: Scheduler no longer requires these methods to be polyfilled. But
-  // maybe we want to continue warning if they don't exist, to preserve the
-  // option to rely on it in the future?
-  const requestAnimationFrame = window.requestAnimationFrame;
-  const cancelAnimationFrame = window.cancelAnimationFrame;
-
-  if (typeof requestAnimationFrame !== 'function') {
-    // Using console['error'] to evade Babel and ESLint
-    console['error'](
-      "This browser doesn't support requestAnimationFrame. " +
-        'Make sure that you load a ' +
-        'polyfill in older browsers. https://reactjs.org/link/react-polyfills',
-    );
-  }
-  if (typeof cancelAnimationFrame !== 'function') {
-    // Using console['error'] to evade Babel and ESLint
-    console['error'](
-      "This browser doesn't support cancelAnimationFrame. " +
-        'Make sure that you load a ' +
-        'polyfill in older browsers. https://reactjs.org/link/react-polyfills',
-    );
-  }
-}
-
-function advanceTimers(currentTime) {
-  // Check for tasks that are no longer delayed and add them to the queue.
-  let timer = peek(timerQueue);
-  while (timer !== null) {
-    if (timer.callback === null) {
-      // Timer was cancelled.
-      pop(timerQueue);
-    } else if (timer.startTime <= currentTime) {
-      // Timer fired. Transfer to the task queue.
-      pop(timerQueue);
-      timer.sortIndex = timer.expirationTime;
-      push(taskQueue, timer);
-      if (enableProfiling) {
-        markTaskStart(timer, currentTime);
-        timer.isQueued = true;
-      }
-    } else {
-      // Remaining timers are pending.
-      return;
-    }
-    timer = peek(timerQueue);
-  }
-}
-
-function handleTimeout(currentTime) {
-  isHostTimeoutScheduled = false;
-  advanceTimers(currentTime);
-
-  if (!isHostCallbackScheduled) {
-    if (peek(taskQueue) !== null) {
-      isHostCallbackScheduled = true;
-      requestHostCallback(flushWork);
-    } else {
-      const firstTimer = peek(timerQueue);
-      if (firstTimer !== null) {
-        requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
-      }
-    }
-  }
-}
-
-function flushWork(hasTimeRemaining, initialTime) {
-  if (enableProfiling) {
-    markSchedulerUnsuspended(initialTime);
-  }
-
-  // We'll need a host callback the next time work is scheduled.
-  isHostCallbackScheduled = false;
-  if (isHostTimeoutScheduled) {
-    // We scheduled a timeout but it's no longer needed. Cancel it.
-    isHostTimeoutScheduled = false;
-    cancelHostTimeout();
-  }
-
-  isPerformingWork = true;
-  const previousPriorityLevel = currentPriorityLevel;
-  try {
-    if (enableProfiling) {
-      try {
-        return workLoop(hasTimeRemaining, initialTime);
-      } catch (error) {
-        if (currentTask !== null) {
-          const currentTime = getCurrentTime();
-          markTaskErrored(currentTask, currentTime);
-          currentTask.isQueued = false;
-        }
-        throw error;
-      }
-    } else {
-      // No catch in prod code path.
-      return workLoop(hasTimeRemaining, initialTime);
-    }
-  } finally {
-    currentTask = null;
-    currentPriorityLevel = previousPriorityLevel;
-    isPerformingWork = false;
-    if (enableProfiling) {
-      const currentTime = getCurrentTime();
-      markSchedulerSuspended(currentTime);
-    }
-  }
-}
-
-function workLoop(hasTimeRemaining, initialTime) {
-  let currentTime = initialTime;
-  advanceTimers(currentTime);
-  currentTask = peek(taskQueue);
-  while (
-    currentTask !== null &&
-    !(enableSchedulerDebugging && isSchedulerPaused)
-  ) {
-    if (
-      currentTask.expirationTime > currentTime &&
-      (!hasTimeRemaining || shouldYieldToHost())
-    ) {
-      // This currentTask hasn't expired, and we've reached the deadline.
-      break;
-    }
-    const callback = currentTask.callback;
-    if (typeof callback === 'function') {
-      currentTask.callback = null;
-      currentPriorityLevel = currentTask.priorityLevel;
-      const didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
-      if (enableProfiling) {
-        markTaskRun(currentTask, currentTime);
-      }
-      const continuationCallback = callback(didUserCallbackTimeout);
-      currentTime = getCurrentTime();
-      if (typeof continuationCallback === 'function') {
-        currentTask.callback = continuationCallback;
-        if (enableProfiling) {
-          markTaskYield(currentTask, currentTime);
-        }
-      } else {
-        if (enableProfiling) {
-          markTaskCompleted(currentTask, currentTime);
-          currentTask.isQueued = false;
-        }
-        if (currentTask === peek(taskQueue)) {
-          pop(taskQueue);
-        }
-      }
-      advanceTimers(currentTime);
-    } else {
-      pop(taskQueue);
-    }
-    currentTask = peek(taskQueue);
-  }
-  // Return whether there's additional work
-  if (currentTask !== null) {
-    return true;
-  } else {
-    const firstTimer = peek(timerQueue);
-    if (firstTimer !== null) {
-      requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
-    }
-    return false;
-  }
-}
-
-function unstable_runWithPriority(priorityLevel, eventHandler) {
-  switch (priorityLevel) {
-    case ImmediatePriority:
-    case UserBlockingPriority:
-    case NormalPriority:
-    case LowPriority:
-    case IdlePriority:
-      break;
-    default:
-      priorityLevel = NormalPriority;
-  }
-
-  var previousPriorityLevel = currentPriorityLevel;
-  currentPriorityLevel = priorityLevel;
-
-  try {
-    return eventHandler();
-  } finally {
-    currentPriorityLevel = previousPriorityLevel;
-  }
-}
-
-function unstable_next(eventHandler) {
-  var priorityLevel;
-  switch (currentPriorityLevel) {
-    case ImmediatePriority:
-    case UserBlockingPriority:
-    case NormalPriority:
-      // Shift down to normal priority
-      priorityLevel = NormalPriority;
-      break;
-    default:
-      // Anything lower than normal priority should remain at the current level.
-      priorityLevel = currentPriorityLevel;
-      break;
-  }
-
-  var previousPriorityLevel = currentPriorityLevel;
-  currentPriorityLevel = priorityLevel;
-
-  try {
-    return eventHandler();
-  } finally {
-    currentPriorityLevel = previousPriorityLevel;
-  }
-}
-
-function unstable_wrapCallback(callback) {
-  var parentPriorityLevel = currentPriorityLevel;
-  return function() {
-    // This is a fork of runWithPriority, inlined for performance.
-    var previousPriorityLevel = currentPriorityLevel;
-    currentPriorityLevel = parentPriorityLevel;
-
-    try {
-      return callback.apply(this, arguments);
-    } finally {
-      currentPriorityLevel = previousPriorityLevel;
-    }
-  };
-}
-
-function unstable_scheduleCallback(priorityLevel, callback, options) {
-  var currentTime = getCurrentTime();
-
-  var startTime;
-  if (typeof options === 'object' && options !== null) {
-    var delay = options.delay;
-    if (typeof delay === 'number' && delay > 0) {
-      startTime = currentTime + delay;
-    } else {
-      startTime = currentTime;
-    }
-  } else {
-    startTime = currentTime;
-  }
-
-  var timeout;
-  switch (priorityLevel) {
-    case ImmediatePriority:
-      timeout = IMMEDIATE_PRIORITY_TIMEOUT;
-      break;
-    case UserBlockingPriority:
-      timeout = USER_BLOCKING_PRIORITY_TIMEOUT;
-      break;
-    case IdlePriority:
-      timeout = IDLE_PRIORITY_TIMEOUT;
-      break;
-    case LowPriority:
-      timeout = LOW_PRIORITY_TIMEOUT;
-      break;
-    case NormalPriority:
-    default:
-      timeout = NORMAL_PRIORITY_TIMEOUT;
-      break;
-  }
-
-  var expirationTime = startTime + timeout;
-
-  var newTask = {
-    id: taskIdCounter++,
-    callback,
-    priorityLevel,
-    startTime,
-    expirationTime,
-    sortIndex: -1,
-  };
-  if (enableProfiling) {
-    newTask.isQueued = false;
-  }
-
-  if (startTime > currentTime) {
-    // This is a delayed task.
-    newTask.sortIndex = startTime;
-    push(timerQueue, newTask);
-    if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
-      // All tasks are delayed, and this is the task with the earliest delay.
-      if (isHostTimeoutScheduled) {
-        // Cancel an existing timeout.
-        cancelHostTimeout();
-      } else {
-        isHostTimeoutScheduled = true;
-      }
-      // Schedule a timeout.
-      requestHostTimeout(handleTimeout, startTime - currentTime);
-    }
-  } else {
-    newTask.sortIndex = expirationTime;
-    push(taskQueue, newTask);
-    if (enableProfiling) {
-      markTaskStart(newTask, currentTime);
-      newTask.isQueued = true;
-    }
-    // Schedule a host callback, if needed. If we're already performing work,
-    // wait until the next time we yield.
-    if (!isHostCallbackScheduled && !isPerformingWork) {
-      isHostCallbackScheduled = true;
-      requestHostCallback(flushWork);
-    }
-  }
-
-  return newTask;
-}
-
-function unstable_pauseExecution() {
-  isSchedulerPaused = true;
-}
-
-function unstable_continueExecution() {
-  isSchedulerPaused = false;
-  if (!isHostCallbackScheduled && !isPerformingWork) {
-    isHostCallbackScheduled = true;
-    requestHostCallback(flushWork);
-  }
-}
-
-function unstable_getFirstCallbackNode() {
-  return peek(taskQueue);
-}
-
-function unstable_cancelCallback(task) {
-  if (enableProfiling) {
-    if (task.isQueued) {
-      const currentTime = getCurrentTime();
-      markTaskCanceled(task, currentTime);
-      task.isQueued = false;
-    }
-  }
-
-  // Null out the callback to indicate the task has been canceled. (Can't
-  // remove from the queue because you can't remove arbitrary nodes from an
-  // array based heap, only the first one.)
-  task.callback = null;
-}
-
-function unstable_getCurrentPriorityLevel() {
-  return currentPriorityLevel;
-}
-
-let isTaskLoopRunning = false;
-let scheduledHostCallback = null;
-let taskTimeoutID = -1;
-
-// Scheduler periodically yields in case there is other work on the main
-// thread, like user events. By default, it yields multiple times per frame.
-// It does not attempt to align with frame boundaries, since most tasks don't
-// need to be frame aligned; for those that do, use requestAnimationFrame.
-let yieldInterval = 5;
-let deadline = 0;
-
-// TODO: Make this configurable
-// TODO: Adjust this based on priority?
-const maxYieldInterval = 300;
-let needsPaint = false;
-
-function shouldYieldToHost() {
-  if (
-    enableIsInputPending &&
-    navigator !== undefined &&
-    navigator.scheduling !== undefined &&
-    navigator.scheduling.isInputPending !== undefined
-  ) {
-    const scheduling = navigator.scheduling;
-    const currentTime = getCurrentTime();
-    if (currentTime >= deadline) {
-      // There's no time left. We may want to yield control of the main
-      // thread, so the browser can perform high priority tasks. The main ones
-      // are painting and user input. If there's a pending paint or a pending
-      // input, then we should yield. But if there's neither, then we can
-      // yield less often while remaining responsive. We'll eventually yield
-      // regardless, since there could be a pending paint that wasn't
-      // accompanied by a call to `requestPaint`, or other main thread tasks
-      // like network events.
-      if (needsPaint || scheduling.isInputPending()) {
-        // There is either a pending paint or a pending input.
-        return true;
-      }
-      // There's no pending input. Only yield if we've reached the max
-      // yield interval.
-      return currentTime >= maxYieldInterval;
-    } else {
-      // There's still time left in the frame.
-      return false;
-    }
-  } else {
-    // `isInputPending` is not available. Since we have no way of knowing if
-    // there's pending input, always yield at the end of the frame.
-    return getCurrentTime() >= deadline;
-  }
-}
-
-function requestPaint() {
-  if (
-    enableIsInputPending &&
-    navigator !== undefined &&
-    navigator.scheduling !== undefined &&
-    navigator.scheduling.isInputPending !== undefined
-  ) {
-    needsPaint = true;
-  }
-
-  // Since we yield every frame regardless, `requestPaint` has no effect.
-}
-
-function forceFrameRate(fps) {
-  if (fps < 0 || fps > 125) {
-    // Using console['error'] to evade Babel and ESLint
-    console['error'](
-      'forceFrameRate takes a positive int between 0 and 125, ' +
-        'forcing frame rates higher than 125 fps is not supported',
-    );
-    return;
-  }
-  if (fps > 0) {
-    yieldInterval = Math.floor(1000 / fps);
-  } else {
-    // reset the framerate
-    yieldInterval = 5;
-  }
-}
-
-const performWorkUntilDeadline = () => {
-  if (scheduledHostCallback !== null) {
-    const currentTime = getCurrentTime();
-    // Yield after `yieldInterval` ms, regardless of where we are in the vsync
-    // cycle. This means there's always time remaining at the beginning of
-    // the message event.
-    deadline = currentTime + yieldInterval;
-    const hasTimeRemaining = true;
-
-    // If a scheduler task throws, exit the current browser task so the
-    // error can be observed.
-    //
-    // Intentionally not using a try-catch, since that makes some debugging
-    // techniques harder. Instead, if `scheduledHostCallback` errors, then
-    // `hasMoreWork` will remain true, and we'll continue the work loop.
-    let hasMoreWork = true;
-    try {
-      hasMoreWork = scheduledHostCallback(hasTimeRemaining, currentTime);
-    } finally {
-      if (hasMoreWork) {
-        // If there's more work, schedule the next browser task at the end of
-        // the preceding one.
-        postTask(performWorkUntilDeadline);
-      } else {
-        isTaskLoopRunning = false;
-        scheduledHostCallback = null;
-      }
-    }
-  } else {
-    isTaskLoopRunning = false;
-  }
-  // Yielding to the browser will give it a chance to paint, so we can
-  // reset this.
-  needsPaint = false;
-};
-
-function postTask(callback) {
-  // Use experimental Chrome Scheduler postTask API.
-  global.scheduler.postTask(callback);
-}
-
-function requestHostCallback(callback) {
-  scheduledHostCallback = callback;
-  if (!isTaskLoopRunning) {
-    isTaskLoopRunning = true;
-    postTask(performWorkUntilDeadline);
-  }
-}
-
-function requestHostTimeout(callback, ms) {
-  taskTimeoutID = setTimeout(() => {
-    callback(getCurrentTime());
-  }, ms);
-}
-
-function cancelHostTimeout() {
-  clearTimeout(taskTimeoutID);
-  taskTimeoutID = -1;
-}
-
-const unstable_requestPaint = requestPaint;
-
-export {
-  ImmediatePriority as unstable_ImmediatePriority,
-  UserBlockingPriority as unstable_UserBlockingPriority,
-  NormalPriority as unstable_NormalPriority,
-  IdlePriority as unstable_IdlePriority,
-  LowPriority as unstable_LowPriority,
-  unstable_runWithPriority,
-  unstable_next,
-  unstable_scheduleCallback,
-  unstable_cancelCallback,
-  unstable_wrapCallback,
-  unstable_getCurrentPriorityLevel,
-  shouldYieldToHost as unstable_shouldYield,
-  unstable_requestPaint,
-  unstable_continueExecution,
-  unstable_pauseExecution,
-  unstable_getFirstCallbackNode,
-  getCurrentTime as unstable_now,
-  forceFrameRate as unstable_forceFrameRate,
-};
-
-export const unstable_Profiling = enableProfiling
-  ? {
-      startLoggingProfilingEvents,
-      stopLoggingProfilingEvents,
-    }
-  : null;
diff --git a/packages/scheduler/unstable_no_dom.js b/packages/scheduler/unstable_no_dom.js
deleted file mode 100644
index bf235f9b15146..0000000000000
--- a/packages/scheduler/unstable_no_dom.js
+++ /dev/null
@@ -1,10 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-'use strict';
-
-export * from './src/forks/SchedulerNoDOM';
diff --git a/packages/scheduler/unstable_post_task_only.js b/packages/scheduler/unstable_post_task_only.js
deleted file mode 100644
index d6e22c230162c..0000000000000
--- a/packages/scheduler/unstable_post_task_only.js
+++ /dev/null
@@ -1,10 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-'use strict';
-
-export * from './src/forks/SchedulerPostTaskOnly';
diff --git a/packages/shared/__tests__/ReactDOMFrameScheduling-test.js b/packages/shared/__tests__/ReactDOMFrameScheduling-test.js
index 3d6407ebe3846..d46a3403ca849 100644
--- a/packages/shared/__tests__/ReactDOMFrameScheduling-test.js
+++ b/packages/shared/__tests__/ReactDOMFrameScheduling-test.js
@@ -13,43 +13,14 @@ describe('ReactDOMFrameScheduling', () => {
   beforeEach(() => {
     jest.resetModules();
 
-    // Un-mock scheduler
-    jest.mock('scheduler', () => require.requireActual('scheduler'));
-  });
-
-  it('warns when requestAnimationFrame is not polyfilled in the browser', () => {
-    const previousRAF = global.requestAnimationFrame;
-    const previousMessageChannel = global.MessageChannel;
-    try {
-      delete global.requestAnimationFrame;
-      global.MessageChannel = function MessageChannel() {
-        return {
-          port1: {},
-          port2: {},
-        };
-      };
-      spyOnDevAndProd(console, 'error');
-      require('react-dom');
-      expect(console.error.calls.count()).toEqual(1);
-      expect(console.error.calls.argsFor(0)[0]).toMatch(
-        "This browser doesn't support requestAnimationFrame.",
-      );
-    } finally {
-      global.MessageChannel = previousMessageChannel;
-      global.requestAnimationFrame = previousRAF;
-    }
+    jest.unmock('scheduler');
   });
 
   // We're just testing importing, not using it.
   // It is important because even isomorphic components may import it.
-  // @gate !source
   it('can import findDOMNode in Node environment', () => {
-    const previousRAF = global.requestAnimationFrame;
-    const previousRIC = global.requestIdleCallback;
     const prevWindow = global.window;
     try {
-      global.requestAnimationFrame = undefined;
-      global.requestIdleCallback = undefined;
       // Simulate the Node environment:
       delete global.window;
       jest.resetModules();
@@ -57,8 +28,6 @@ describe('ReactDOMFrameScheduling', () => {
         require('react-dom');
       }).not.toThrow();
     } finally {
-      global.requestAnimationFrame = previousRAF;
-      global.requestIdleCallback = previousRIC;
       global.window = prevWindow;
     }
   });
diff --git a/scripts/rollup/bundles.js b/scripts/rollup/bundles.js
index b34c0077873a6..7e0cd766d6577 100644
--- a/scripts/rollup/bundles.js
+++ b/scripts/rollup/bundles.js
@@ -735,39 +735,6 @@ const bundles = [
     externals: [],
   },
 
-  /******* React Scheduler Post Task Only (experimental) *******/
-  {
-    bundleTypes: [
-      NODE_DEV,
-      NODE_PROD,
-      FB_WWW_DEV,
-      FB_WWW_PROD,
-      FB_WWW_PROFILING,
-    ],
-    moduleType: ISOMORPHIC,
-    entry: 'scheduler/unstable_post_task_only',
-    global: 'SchedulerPostTaskOnly',
-    externals: [],
-  },
-
-  /******* React Scheduler No DOM (experimental) *******/
-  {
-    bundleTypes: [
-      NODE_DEV,
-      NODE_PROD,
-      FB_WWW_DEV,
-      FB_WWW_PROD,
-      FB_WWW_PROFILING,
-      RN_FB_DEV,
-      RN_FB_PROD,
-      RN_FB_PROFILING,
-    ],
-    moduleType: ISOMORPHIC,
-    entry: 'scheduler/unstable_no_dom',
-    global: 'SchedulerNoDOM',
-    externals: [],
-  },
-
   /******* Jest React (experimental) *******/
   {
     bundleTypes: [NODE_DEV, NODE_PROD],

From afc13ae496531c6a838a21a8fb6fadd16ddb1ff0 Mon Sep 17 00:00:00 2001
From: Rick Hanlon <rickhanlonii@gmail.com>
Date: Tue, 2 Mar 2021 13:09:59 -0700
Subject: [PATCH 2/9] Un-shadow variables

---
 packages/scheduler/src/forks/Scheduler.js | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/packages/scheduler/src/forks/Scheduler.js b/packages/scheduler/src/forks/Scheduler.js
index 28d3becd809f3..97c181980110c 100644
--- a/packages/scheduler/src/forks/Scheduler.js
+++ b/packages/scheduler/src/forks/Scheduler.js
@@ -85,11 +85,11 @@ var isHostCallbackScheduled = false;
 var isHostTimeoutScheduled = false;
 
 // Capture local references to native APIs, in case a polyfill overrides them.
-const setTimeout =
+const localSetTimeout =
   typeof window !== 'undefined' ? window.setTimeout : setTimeout;
-const clearTimeout =
+const localClearTimeout =
   typeof window !== 'undefined' ? window.clearTimeout : clearTimeout;
-const setImmediate =
+const localSetImmediate =
   typeof window !== 'undefined' ? window.setImmediate : setImmediate; // IE and Node.js + jsdom
 
 function advanceTimers(currentTime) {
@@ -530,7 +530,7 @@ const performWorkUntilDeadline = () => {
 };
 
 let schedulePerformWorkUntilDeadline;
-if (typeof setImmediate === 'function') {
+if (typeof localSetImmediate === 'function') {
   // Node.js and old IE.
   // There's a few reasons for why we prefer setImmediate.
   //
@@ -543,7 +543,7 @@ if (typeof setImmediate === 'function') {
   // If other browsers ever implement it, it's better to use it.
   // Although both of these would be inferior to native scheduling.
   schedulePerformWorkUntilDeadline = () => {
-    setImmediate(performWorkUntilDeadline);
+    localSetImmediate(performWorkUntilDeadline);
   };
 } else if (typeof MessageChannel !== 'undefined') {
   // DOM and Worker environments.
@@ -557,7 +557,7 @@ if (typeof setImmediate === 'function') {
 } else {
   // We should only fallback here in non-browser environments.
   schedulePerformWorkUntilDeadline = () => {
-    setTimeout(performWorkUntilDeadline, 0);
+    localSetTimeout(performWorkUntilDeadline, 0);
   };
 }
 
@@ -570,13 +570,13 @@ function requestHostCallback(callback) {
 }
 
 function requestHostTimeout(callback, ms) {
-  taskTimeoutID = setTimeout(() => {
+  taskTimeoutID = localSetTimeout(() => {
     callback(getCurrentTime());
   }, ms);
 }
 
 function cancelHostTimeout() {
-  clearTimeout(taskTimeoutID);
+  localClearTimeout(taskTimeoutID);
   taskTimeoutID = -1;
 }
 

From ccb2e84070e470b40a6be0435240dae3497b77d4 Mon Sep 17 00:00:00 2001
From: Rick Hanlon <rickhanlonii@gmail.com>
Date: Tue, 2 Mar 2021 13:49:19 -0700
Subject: [PATCH 3/9] Use timer globals directly, add a test for overrides

---
 .../scheduler/src/__tests__/Scheduler-test.js | 10 ++++----
 .../__tests__/SchedulerSetImmediate-test.js   | 25 +++++++++++++------
 .../src/__tests__/SchedulerSetTimeout-test.js |  5 +---
 packages/scheduler/src/forks/Scheduler.js     |  8 +++---
 4 files changed, 26 insertions(+), 22 deletions(-)

diff --git a/packages/scheduler/src/__tests__/Scheduler-test.js b/packages/scheduler/src/__tests__/Scheduler-test.js
index 707b9eb86cc6d..29abe65c1eae8 100644
--- a/packages/scheduler/src/__tests__/Scheduler-test.js
+++ b/packages/scheduler/src/__tests__/Scheduler-test.js
@@ -32,9 +32,9 @@ let NormalPriority;
 describe('SchedulerBrowser', () => {
   beforeEach(() => {
     jest.resetModules();
+    runtime = installMockBrowserRuntime();
     jest.unmock('scheduler');
 
-    runtime = installMockBrowserRuntime();
     performance = global.performance;
     Scheduler = require('scheduler');
     cancelCallback = Scheduler.unstable_cancelCallback;
@@ -66,16 +66,16 @@ describe('SchedulerBrowser', () => {
       },
     };
 
-    const window = {};
-    global.window = window;
+    // Delete node provide setImmediate so we fall through to MessageChannel.
+    delete global.setImmediate;
 
-    window.setTimeout = (cb, delay) => {
+    global.setTimeout = (cb, delay) => {
       const id = timerIDCounter++;
       log(`Set Timer`);
       // TODO
       return id;
     };
-    window.clearTimeout = id => {
+    global.clearTimeout = id => {
       // TODO
     };
 
diff --git a/packages/scheduler/src/__tests__/SchedulerSetImmediate-test.js b/packages/scheduler/src/__tests__/SchedulerSetImmediate-test.js
index 52ff5d589a8ae..b37536c696ba5 100644
--- a/packages/scheduler/src/__tests__/SchedulerSetImmediate-test.js
+++ b/packages/scheduler/src/__tests__/SchedulerSetImmediate-test.js
@@ -33,9 +33,9 @@ let UserBlockingPriority;
 describe('SchedulerDOMSetImmediate', () => {
   beforeEach(() => {
     jest.resetModules();
+    runtime = installMockBrowserRuntime();
     jest.unmock('scheduler');
 
-    runtime = installMockBrowserRuntime();
     performance = global.performance;
     Scheduler = require('scheduler');
     cancelCallback = Scheduler.unstable_cancelCallback;
@@ -66,16 +66,12 @@ describe('SchedulerDOMSetImmediate', () => {
       },
     };
 
-    const window = {};
-    global.window = window;
-
-    window.setTimeout = (cb, delay) => {
+    global.setTimeout = (cb, delay) => {
       const id = timerIDCounter++;
       log(`Set Timer`);
-      // TODO
       return id;
     };
-    window.clearTimeout = id => {
+    global.clearTimeout = id => {
       // TODO
     };
 
@@ -92,7 +88,7 @@ describe('SchedulerDOMSetImmediate', () => {
     };
 
     let pendingSetImmediateCallback = null;
-    window.setImmediate = function(cb) {
+    global.setImmediate = function(cb) {
       if (pendingSetImmediateCallback) {
         throw Error('Message event already scheduled');
       }
@@ -138,6 +134,19 @@ describe('SchedulerDOMSetImmediate', () => {
     };
   }
 
+  it('does not use setImmediate override', () => {
+    global.setImmediate = () => {
+      throw new Error('Should not throw');
+    };
+
+    scheduleCallback(NormalPriority, () => {
+      runtime.log('Task');
+    });
+    runtime.assertLog(['Set Immediate']);
+    runtime.fireSetImmediate();
+    runtime.assertLog(['setImmediate Callback', 'Task']);
+  });
+
   it('task that finishes before deadline', () => {
     scheduleCallback(NormalPriority, () => {
       runtime.log('Task');
diff --git a/packages/scheduler/src/__tests__/SchedulerSetTimeout-test.js b/packages/scheduler/src/__tests__/SchedulerSetTimeout-test.js
index 9080c77c9109e..595b85e53a91f 100644
--- a/packages/scheduler/src/__tests__/SchedulerSetTimeout-test.js
+++ b/packages/scheduler/src/__tests__/SchedulerSetTimeout-test.js
@@ -22,12 +22,9 @@ describe('SchedulerNoDOM', () => {
   beforeEach(() => {
     jest.resetModules();
     jest.useFakeTimers();
+    delete global.setImmediate;
     jest.unmock('scheduler');
 
-    const window = {};
-    window.setTimeout = setTimeout;
-    global.window = window;
-
     Scheduler = require('scheduler');
     scheduleCallback = Scheduler.unstable_scheduleCallback;
     UserBlockingPriority = Scheduler.unstable_UserBlockingPriority;
diff --git a/packages/scheduler/src/forks/Scheduler.js b/packages/scheduler/src/forks/Scheduler.js
index 97c181980110c..57c97e28bcba1 100644
--- a/packages/scheduler/src/forks/Scheduler.js
+++ b/packages/scheduler/src/forks/Scheduler.js
@@ -85,12 +85,10 @@ var isHostCallbackScheduled = false;
 var isHostTimeoutScheduled = false;
 
 // Capture local references to native APIs, in case a polyfill overrides them.
-const localSetTimeout =
-  typeof window !== 'undefined' ? window.setTimeout : setTimeout;
-const localClearTimeout =
-  typeof window !== 'undefined' ? window.clearTimeout : clearTimeout;
+const localSetTimeout = setTimeout;
+const localClearTimeout = clearTimeout;
 const localSetImmediate =
-  typeof window !== 'undefined' ? window.setImmediate : setImmediate; // IE and Node.js + jsdom
+  typeof setImmediate !== 'undefined' ? setImmediate : null; // IE and Node.js + jsdom
 
 function advanceTimers(currentTime) {
   // Check for tasks that are no longer delayed and add them to the queue.

From e66d7f9898ba3a80b2f21ed30b5f0160d01db93a Mon Sep 17 00:00:00 2001
From: Rick Hanlon <rickhanlonii@gmail.com>
Date: Tue, 2 Mar 2021 13:49:33 -0700
Subject: [PATCH 4/9] Remove more window references

---
 .../src/__tests__/SchedulerUMDBundle-test.internal.js       | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/packages/scheduler/src/__tests__/SchedulerUMDBundle-test.internal.js b/packages/scheduler/src/__tests__/SchedulerUMDBundle-test.internal.js
index 6b13ad88d259b..8aa1a387b269b 100644
--- a/packages/scheduler/src/__tests__/SchedulerUMDBundle-test.internal.js
+++ b/packages/scheduler/src/__tests__/SchedulerUMDBundle-test.internal.js
@@ -23,16 +23,10 @@ describe('Scheduling UMD bundle', () => {
     jest.resetModules();
     jest.unmock('scheduler');
 
-    // Mock a browser environment since we're testing UMD modules.
-    global.window = {
-      requestAnimationFrame: jest.fn(),
-      cancelAnimationFrame: jest.fn(),
-    };
     global.MessageChannel = MockMessageChannel;
   });
 
   afterEach(() => {
-    global.window = undefined;
     global.MessageChannel = undefined;
   });
 

From 4a956a9deac84b5350ae7bf9724435579e59a842 Mon Sep 17 00:00:00 2001
From: Rick Hanlon <rickhanlonii@gmail.com>
Date: Tue, 2 Mar 2021 14:01:59 -0700
Subject: [PATCH 5/9] Don't crash for undefined globals + tests

---
 .../__tests__/SchedulerSetImmediate-test.js   | 14 +++++++++
 .../src/__tests__/SchedulerSetTimeout-test.js | 31 +++++++++++++++++++
 packages/scheduler/src/forks/Scheduler.js     |  5 +--
 3 files changed, 48 insertions(+), 2 deletions(-)

diff --git a/packages/scheduler/src/__tests__/SchedulerSetImmediate-test.js b/packages/scheduler/src/__tests__/SchedulerSetImmediate-test.js
index b37536c696ba5..219618adc41f4 100644
--- a/packages/scheduler/src/__tests__/SchedulerSetImmediate-test.js
+++ b/packages/scheduler/src/__tests__/SchedulerSetImmediate-test.js
@@ -287,3 +287,17 @@ describe('SchedulerDOMSetImmediate', () => {
     runtime.assertLog(['setImmediate Callback', 'B']);
   });
 });
+
+it('does not crash if setImmediate is undefined', () => {
+  jest.resetModules();
+  const originalSetImmediate = global.setImmediate;
+  try {
+    delete global.setImmediate;
+    jest.unmock('scheduler');
+    expect(() => {
+      require('scheduler');
+    }).not.toThrow();
+  } finally {
+    global.setImmediate = originalSetImmediate;
+  }
+});
diff --git a/packages/scheduler/src/__tests__/SchedulerSetTimeout-test.js b/packages/scheduler/src/__tests__/SchedulerSetTimeout-test.js
index 595b85e53a91f..c4a950e1f1fd9 100644
--- a/packages/scheduler/src/__tests__/SchedulerSetTimeout-test.js
+++ b/packages/scheduler/src/__tests__/SchedulerSetTimeout-test.js
@@ -95,3 +95,34 @@ describe('SchedulerNoDOM', () => {
     expect(log).toEqual(['B', 'C']);
   });
 });
+
+// See: https://github.com/facebook/react/pull/13088
+describe('does not crash non-node SSR environments', () => {
+  it('if setTimeout is undefined', () => {
+    jest.resetModules();
+    const originalSetTimeout = global.setTimeout;
+    try {
+      delete global.setTimeout;
+      jest.unmock('scheduler');
+      expect(() => {
+        require('scheduler');
+      }).not.toThrow();
+    } finally {
+      global.setTimeout = originalSetTimeout;
+    }
+  });
+
+  it('if clearTimeout is undefined', () => {
+    jest.resetModules();
+    const originalClearTimeout = global.clearTimeout;
+    try {
+      delete global.clearTimeout;
+      jest.unmock('scheduler');
+      expect(() => {
+        require('scheduler');
+      }).not.toThrow();
+    } finally {
+      global.clearTimeout = originalClearTimeout;
+    }
+  });
+});
diff --git a/packages/scheduler/src/forks/Scheduler.js b/packages/scheduler/src/forks/Scheduler.js
index 57c97e28bcba1..6d0599f7068cc 100644
--- a/packages/scheduler/src/forks/Scheduler.js
+++ b/packages/scheduler/src/forks/Scheduler.js
@@ -85,8 +85,9 @@ var isHostCallbackScheduled = false;
 var isHostTimeoutScheduled = false;
 
 // Capture local references to native APIs, in case a polyfill overrides them.
-const localSetTimeout = setTimeout;
-const localClearTimeout = clearTimeout;
+const localSetTimeout = typeof setTimeout === 'function' ? setTimeout : null;
+const localClearTimeout =
+  typeof clearTimeout === 'function' ? clearTimeout : null;
 const localSetImmediate =
   typeof setImmediate !== 'undefined' ? setImmediate : null; // IE and Node.js + jsdom
 

From 52292672f4c6b1c3cdd71e3c9c710f9b0f010e21 Mon Sep 17 00:00:00 2001
From: Rick Hanlon <rickhanlonii@gmail.com>
Date: Tue, 2 Mar 2021 14:38:53 -0700
Subject: [PATCH 6/9] Update lint config globals

---
 scripts/rollup/validate/eslintrc.rn.js  | 3 ++-
 scripts/rollup/validate/eslintrc.umd.js | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/scripts/rollup/validate/eslintrc.rn.js b/scripts/rollup/validate/eslintrc.rn.js
index b6941e4f2caff..a20cdeb4a37ea 100644
--- a/scripts/rollup/validate/eslintrc.rn.js
+++ b/scripts/rollup/validate/eslintrc.rn.js
@@ -24,7 +24,8 @@ module.exports = {
     nativeFabricUIManager: true,
     // Trusted Types
     trustedTypes: true,
-
+    // RN supports this
+    setImmediate: true,
     // Scheduler profiling
     Int32Array: true,
     ArrayBuffer: true,
diff --git a/scripts/rollup/validate/eslintrc.umd.js b/scripts/rollup/validate/eslintrc.umd.js
index 8bec6d92296d6..95ef9550dd6ab 100644
--- a/scripts/rollup/validate/eslintrc.umd.js
+++ b/scripts/rollup/validate/eslintrc.umd.js
@@ -26,6 +26,8 @@ module.exports = {
     require: true,
     globalThis: true,
     global: true,
+    // Internet Explorer
+    setImmediate: true,
     // Trusted Types
     trustedTypes: true,
 

From d57c1a468d0439f9e3e5df8d9381bc56bc0d0ffa Mon Sep 17 00:00:00 2001
From: Rick Hanlon <rickhanlonii@gmail.com>
Date: Mon, 8 Mar 2021 21:33:55 -0700
Subject: [PATCH 7/9] Fix test by using async act

---
 fixtures/dom/src/__tests__/wrong-act-test.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fixtures/dom/src/__tests__/wrong-act-test.js b/fixtures/dom/src/__tests__/wrong-act-test.js
index 3e8912276e17c..a3fe716ff07c8 100644
--- a/fixtures/dom/src/__tests__/wrong-act-test.js
+++ b/fixtures/dom/src/__tests__/wrong-act-test.js
@@ -81,12 +81,12 @@ it("doesn't warn when you use the right act + renderer: test", () => {
   });
 });
 
-it('resets correctly across renderers', () => {
+it('resets correctly across renderers', async () => {
   function Effecty() {
     React.useEffect(() => {}, []);
     return null;
   }
-  TestUtils.act(() => {
+  await TestUtils.act(async () => {
     TestRenderer.act(() => {});
     expect(() => {
       TestRenderer.create(<Effecty />);

From 7dfdd140136c8d3f8b560e46e6b04147dd6d799e Mon Sep 17 00:00:00 2001
From: Rick Hanlon <rickhanlonii@gmail.com>
Date: Sat, 13 Mar 2021 18:15:11 -0500
Subject: [PATCH 8/9] Add test fixture

---
 fixtures/tests/.gitignore                     |   25 +
 fixtures/tests/README.md                      |   21 +
 fixtures/tests/__tests__/all.js               |  138 +
 fixtures/tests/babel.config.json              |    5 +
 fixtures/tests/jest/test-jsdom.js             |   39 +
 fixtures/tests/jest/test-node-jsdom.js        |   19 +
 fixtures/tests/jest/test-node.js              |    9 +
 fixtures/tests/node/test-jsdom.js             |    8 +
 fixtures/tests/node/test-node.js              |    6 +
 fixtures/tests/package.json                   |   46 +
 .../tests/schedulers/pr/scheduler/LICENSE     |   21 +
 .../tests/schedulers/pr/scheduler/README.md   |    9 +
 .../schedulers/pr/scheduler/build-info.json   |    8 +
 .../cjs/scheduler-tracing.development.js      |  347 ++
 .../cjs/scheduler-tracing.production.min.js   |    9 +
 .../cjs/scheduler-tracing.profiling.min.js    |   16 +
 .../scheduler-unstable_mock.development.js    |  694 +++
 .../scheduler-unstable_mock.production.min.js |   19 +
 ...cheduler-unstable_post_task.development.js |  206 +
 ...duler-unstable_post_task.production.min.js |   13 +
 .../pr/scheduler/cjs/scheduler.development.js |  609 +++
 .../scheduler/cjs/scheduler.production.min.js |   18 +
 .../tests/schedulers/pr/scheduler/index.js    |    7 +
 .../schedulers/pr/scheduler/package.json      |   40 +
 .../pr/scheduler/tracing-profiling.js         |    7 +
 .../tests/schedulers/pr/scheduler/tracing.js  |    7 +
 .../umd/scheduler-tracing.development.js      |   80 +
 .../umd/scheduler-tracing.production.min.js   |   80 +
 .../umd/scheduler-tracing.profiling.min.js    |   80 +
 .../scheduler-unstable_mock.development.js    |  693 +++
 .../scheduler-unstable_mock.production.min.js |   18 +
 .../pr/scheduler/umd/scheduler.development.js |  152 +
 .../scheduler/umd/scheduler.production.min.js |  146 +
 .../scheduler/umd/scheduler.profiling.min.js  |  146 +
 .../schedulers/pr/scheduler/unstable_mock.js  |    7 +
 .../pr/scheduler/unstable_post_task.js        |    7 +
 .../tests/schedulers/stable/scheduler/LICENSE |   21 +
 .../schedulers/stable/scheduler/README.md     |    9 +
 .../stable/scheduler/build-info.json          |    8 +
 .../cjs/scheduler-tracing.development.js      |  347 ++
 .../cjs/scheduler-tracing.production.min.js   |    9 +
 .../cjs/scheduler-tracing.profiling.min.js    |   16 +
 .../scheduler-unstable_mock.development.js    |  863 ++++
 .../scheduler-unstable_mock.production.min.js |   19 +
 ...cheduler-unstable_post_task.development.js |  206 +
 ...duler-unstable_post_task.production.min.js |   13 +
 .../scheduler/cjs/scheduler.development.js    |  845 ++++
 .../scheduler/cjs/scheduler.production.min.js |   20 +
 .../schedulers/stable/scheduler/index.js      |    7 +
 .../stable/scheduler/tracing-profiling.js     |    7 +
 .../schedulers/stable/scheduler/tracing.js    |    7 +
 .../umd/scheduler-tracing.development.js      |   80 +
 .../umd/scheduler-tracing.production.min.js   |   80 +
 .../umd/scheduler-tracing.profiling.min.js    |   80 +
 .../scheduler-unstable_mock.development.js    |  862 ++++
 .../scheduler-unstable_mock.production.min.js |   18 +
 .../scheduler/umd/scheduler.development.js    |  152 +
 .../scheduler/umd/scheduler.production.min.js |  146 +
 .../scheduler/umd/scheduler.profiling.min.js  |  146 +
 .../stable/scheduler/unstable_mock.js         |    7 +
 .../stable/scheduler/unstable_post_task.js    |    7 +
 fixtures/tests/yarn.lock                      | 3882 +++++++++++++++++
 62 files changed, 11612 insertions(+)
 create mode 100644 fixtures/tests/.gitignore
 create mode 100644 fixtures/tests/README.md
 create mode 100644 fixtures/tests/__tests__/all.js
 create mode 100644 fixtures/tests/babel.config.json
 create mode 100644 fixtures/tests/jest/test-jsdom.js
 create mode 100644 fixtures/tests/jest/test-node-jsdom.js
 create mode 100644 fixtures/tests/jest/test-node.js
 create mode 100644 fixtures/tests/node/test-jsdom.js
 create mode 100644 fixtures/tests/node/test-node.js
 create mode 100644 fixtures/tests/package.json
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/LICENSE
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/README.md
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/build-info.json
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.development.js
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.production.min.js
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.profiling.min.js
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_mock.development.js
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_mock.production.min.js
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_post_task.development.js
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_post_task.production.min.js
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/cjs/scheduler.development.js
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/cjs/scheduler.production.min.js
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/index.js
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/package.json
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/tracing-profiling.js
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/tracing.js
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.development.js
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.production.min.js
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.profiling.min.js
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/umd/scheduler-unstable_mock.development.js
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/umd/scheduler-unstable_mock.production.min.js
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/umd/scheduler.development.js
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/umd/scheduler.production.min.js
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/umd/scheduler.profiling.min.js
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/unstable_mock.js
 create mode 100644 fixtures/tests/schedulers/pr/scheduler/unstable_post_task.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/LICENSE
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/README.md
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/build-info.json
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.development.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.production.min.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.profiling.min.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_mock.development.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_mock.production.min.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_post_task.development.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_post_task.production.min.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/cjs/scheduler.development.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/cjs/scheduler.production.min.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/index.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/tracing-profiling.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/tracing.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.development.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.production.min.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.profiling.min.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/umd/scheduler-unstable_mock.development.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/umd/scheduler-unstable_mock.production.min.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/umd/scheduler.development.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/umd/scheduler.production.min.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/umd/scheduler.profiling.min.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/unstable_mock.js
 create mode 100644 fixtures/tests/schedulers/stable/scheduler/unstable_post_task.js
 create mode 100644 fixtures/tests/yarn.lock

diff --git a/fixtures/tests/.gitignore b/fixtures/tests/.gitignore
new file mode 100644
index 0000000000000..3473f8a18efa5
--- /dev/null
+++ b/fixtures/tests/.gitignore
@@ -0,0 +1,25 @@
+# See http://help.github.com/ignore-files/ for more about ignoring files.
+
+# dependencies
+node_modules
+
+# testing
+coverage
+
+# production
+build
+public/scheduler-unstable_mock.development.js
+public/scheduler-unstable_mock.production.min.js
+public/react.development.js
+public/react.production.min.js
+public/react-dom.development.js
+public/react-dom.production.min.js
+public/react-dom-server.browser.development.js
+public/react-dom-server.browser.production.min.js
+public/react-dom-test-utils.development.js
+public/react-dom-test-utils.production.min.js
+
+# misc
+.DS_Store
+.env
+npm-debug.log
diff --git a/fixtures/tests/README.md b/fixtures/tests/README.md
new file mode 100644
index 0000000000000..6dfb27d45d74a
--- /dev/null
+++ b/fixtures/tests/README.md
@@ -0,0 +1,21 @@
+## Overview
+
+Use nvm to switch node versions.
+
+### Node <15
+- Node<15
+- Node<15 + jsdom
+- Node<15 + jest + jest-environment-node
+- Node<15 + jest + jest-environment-node + jsdom
+- Node<15 + jest + jest-environment-jsdom + jsdom
+
+### Node >= 15
+- Node>=15
+- Node>=15 + jsdom
+- Node>=15 + jest + jest-environment-node
+- Node>=15 + jest + jest-environment-node + jsdom
+- Node>=15 + jest + jest-environment-jsdom + jsdom
+
+### Other
+- Browser
+- React Native
diff --git a/fixtures/tests/__tests__/all.js b/fixtures/tests/__tests__/all.js
new file mode 100644
index 0000000000000..4b3b23d2620db
--- /dev/null
+++ b/fixtures/tests/__tests__/all.js
@@ -0,0 +1,138 @@
+/** @jest-environment node */
+
+
+const { spawn, exec } = require('child_process');
+
+const NODE_14_TEST_CASES = [
+  ['node-14'],
+  ["node-14"],
+  ["node-14-jsdom"],
+  ["node-14-jest-env-node"],
+  ["node-14-jest-env-node-jsdom"],
+  ["node-14-jest-env-jsdom"]
+]
+
+const NODE_15_TEST_CASES = [
+  ['node-15'],
+  ["node-15"],
+  ["node-15-jsdom"],
+  ["node-15-jest-env-node"],
+  ["node-15-jest-env-node-jsdom"],
+  ["node-15-jest-env-jsdom"]
+];
+
+describe.each([['Node <15', NODE_14_TEST_CASES], ['Node 15', NODE_15_TEST_CASES]])('$s', (label, cases) => {
+  if (process.env.DEBUG) {
+    console.log('Running', label);
+  }
+
+it.each(cases)('%s', (command, done) => {
+  const test = spawn('yarn', [command], {detached: true});
+  let finished = false;
+  let timeout;
+
+  function debug(...args) {
+    if (!finished && process.env.DEBUG) {
+      console.log(command, ...args);
+    }
+  }
+
+  debug(`testing ${command}...`);
+
+  function processResult(reason) {
+    if (!finished) {
+      finished = true;
+      clearTimeout(timeout);
+      try {
+        expect(command).toPass(reason);
+      } finally {
+        done();
+      }
+
+    }
+  }
+
+  test.stderr.on('data', (data) => {
+    debug('err', data.toString());
+    if (data.toString().indexOf('STARTED') >= 0) {
+      if (!timeout) {
+        debug('schduling stderr timeout');
+        timeout = setTimeout(() => {
+          debug('timed out in stderr, killing');
+          test.kill('SIGKILL');
+          processResult('TIMEOUT');
+        }, 10000);
+      } else {
+        debug('timeout already set');
+      }
+    }
+  });
+  test.stdout.on('data', (data) => {
+    debug('out', data.toString());
+    if (data.toString().indexOf('STARTED') >= 0) {
+      if (!timeout) {
+        debug('schduling stdout timeout');
+        timeout = setTimeout(() => {
+          debug('timed out in out, killing');
+          process.kill(-test.pid);
+          processResult('TIMEOUT');
+        }, 10000);
+      } else {
+        debug('timeout already set');
+      }
+    }
+  });
+  test.on('close', (code) => {
+    debug('closed', code);
+
+    if (code !== 0) {
+      processResult('FAILED');
+    } else {
+      processResult('SUCCESS');
+    }
+
+  });
+
+  test.on('error', (err) => {
+    debug('error', err);
+    processResult('ERROR');
+  });
+
+  test.on('SIGKILL', () => {
+    debug('killed');
+    processResult('KILLED');
+  });
+});
+});
+
+expect.extend({
+  toPass(command, reason) {
+    const pass = reason === 'SUCCESS';
+    function getCommand() {
+      return `(yarn ${command})`
+    }
+    if (pass) {
+      return {
+        message: () =>
+          `expected ${command} not to pass`,
+        pass: true,
+      };
+    } else {
+      return {
+        message: () => {
+          switch(reason) {
+            case 'FAILED':
+              return `expected ${command} to pass but it failed ${getCommand()}`;
+            case 'TIMEOUT':
+              return `expected ${command} to pass but it hung ${getCommand()}`;
+            case 'ERROR':
+              return `expected ${command} to pass but it errored ${getCommand()}`;
+            default:
+              return `expected ${command} to pass but it failed for an unknown reason ${reason}`;
+          }
+        },
+        pass: false,
+      };
+    }
+  },
+});
diff --git a/fixtures/tests/babel.config.json b/fixtures/tests/babel.config.json
new file mode 100644
index 0000000000000..49c8f3ff0111d
--- /dev/null
+++ b/fixtures/tests/babel.config.json
@@ -0,0 +1,5 @@
+{
+  "ignore": [],
+  "presets": ["@babel/preset-env", "@babel/preset-flow", "@babel/preset-react"]
+
+}
diff --git a/fixtures/tests/jest/test-jsdom.js b/fixtures/tests/jest/test-jsdom.js
new file mode 100644
index 0000000000000..caeb1ae28c54b
--- /dev/null
+++ b/fixtures/tests/jest/test-jsdom.js
@@ -0,0 +1,39 @@
+/** @jest-environment jsdom */
+
+console.log('STARTED');
+
+beforeEach(() => {
+  jest.resetModules();
+})
+
+it('should not crash in jsdom env', () => {
+  require('scheduler');
+});
+
+it('should not crash in jsdom env with jest jsdom', () => {
+  const React = require('react');
+  const ReactDOM = require('react-dom');
+  function Effecty() {
+    React.useEffect(() => {}, []);
+    return null;
+  }
+
+  ReactDOM.render(<Effecty />, document.createElement('div'));
+});
+
+it('should not crash in jsdom env with jsdom', () => {
+  var { JSDOM } = require('jsdom');
+  var { window } = new JSDOM();
+  global.window = window;
+  global.document = window.document;
+  global.navigator = {userAgent: ''}
+  const React = require('react');
+  const ReactDOM = require('react-dom');
+
+  function Effecty() {
+    React.useEffect(() => {}, []);
+    return null;
+  }
+
+  ReactDOM.render(<Effecty />, document.createElement('div'));
+});
diff --git a/fixtures/tests/jest/test-node-jsdom.js b/fixtures/tests/jest/test-node-jsdom.js
new file mode 100644
index 0000000000000..1b5c12def5e60
--- /dev/null
+++ b/fixtures/tests/jest/test-node-jsdom.js
@@ -0,0 +1,19 @@
+/** @jest-environment node */
+
+console.log('STARTED');
+
+it('should not crash in node env with jsdom', () => {
+  var { JSDOM } = require('jsdom');
+  var { window } = new JSDOM();
+  global.window = window;
+  global.document = window.document;
+  global.navigator = {userAgent: ''}
+  const React = require('react');
+  const ReactDOM = require('react-dom');
+  function Effecty() {
+    React.useEffect(() => {}, []);
+    return null;
+  }
+
+  ReactDOM.render(<Effecty />, document.createElement('div'));
+});
diff --git a/fixtures/tests/jest/test-node.js b/fixtures/tests/jest/test-node.js
new file mode 100644
index 0000000000000..28e203cc819c5
--- /dev/null
+++ b/fixtures/tests/jest/test-node.js
@@ -0,0 +1,9 @@
+/** @jest-environment node */
+
+console.log('STARTED');
+
+it('should not crash in node env', () => {
+  global.window = global;
+
+  require('scheduler');
+});
diff --git a/fixtures/tests/node/test-jsdom.js b/fixtures/tests/node/test-jsdom.js
new file mode 100644
index 0000000000000..e79ecc6f7d2bc
--- /dev/null
+++ b/fixtures/tests/node/test-jsdom.js
@@ -0,0 +1,8 @@
+console.log('STARTED');
+
+var { JSDOM } = require('jsdom');
+var { window } = new JSDOM();
+global.window = window;
+global.document = window.document;
+
+require('scheduler');
diff --git a/fixtures/tests/node/test-node.js b/fixtures/tests/node/test-node.js
new file mode 100644
index 0000000000000..fa3674e6f7de6
--- /dev/null
+++ b/fixtures/tests/node/test-node.js
@@ -0,0 +1,6 @@
+global.__VARIANT__ = true;
+
+console.log('STARTED');
+
+global.window = global; // simulate JSDOM
+require('scheduler');
diff --git a/fixtures/tests/package.json b/fixtures/tests/package.json
new file mode 100644
index 0000000000000..3d0eb5b7cf855
--- /dev/null
+++ b/fixtures/tests/package.json
@@ -0,0 +1,46 @@
+{
+  "name": "react-fixtures",
+  "version": "0.1.0",
+  "private": true,
+  "devDependencies": {
+    "@babel/core": "^7.13.10",
+    "@babel/plugin-transform-regenerator": "^7.12.13",
+    "@babel/preset-flow": "^7.12.13",
+    "@babel/preset-react": "^7.12.13",
+    "@babel/register": "^7.13.8"
+  },
+  "dependencies": {
+    "jest": "^26.6.3",
+    "node-14": "npm:node@14",
+    "node-15": "npm:node@15",
+    "react": "^17.0.0",
+    "react-dom": "^17.0.0",
+    "scheduler": "^0.20.1"
+  },
+  "scripts": {
+    "test-all": "jest all.js",
+    "node-14": "node_modules/node-14/bin/node node/test-node.js",
+    "node-14-jsdom": "node_modules/node-14/bin/node node/test-jsdom.js",
+    "node-14-jest-env-node": "node_modules/node-14/bin/node node_modules/jest-cli/bin/jest.js jest/test-jsdom.js",
+    "node-14-jest-env-node-jsdom": "node_modules/node-14/bin/node node_modules/jest-cli/bin/jest.js jest/test-node-jsdom.js",
+    "node-14-jest-env-jsdom": "node_modules/node-14/bin/node node_modules/jest-cli/bin/jest.js jest/test-jsdom.js",
+    "node-15": "node_modules/node-15/bin/node node/test-node.js",
+    "node-15-jsdom": "node_modules/node-15/bin/node node/test-jsdom.js",
+    "node-15-jest-env-node": "node_modules/node-15/bin/node node_modules/jest-cli/bin/jest.js jest/test-jsdom.js",
+    "node-15-jest-env-node-jsdom": "node_modules/node-15/bin/node node_modules/jest-cli/bin/jest.js jest/test-node-jsdom.js",
+    "node-15-jest-env-jsdom": "node_modules/node-15/bin/node node_modules/jest-cli/bin/jest.js jest/test-jsdom.js",
+    "main": "cp -a ./schedulers/main/. node_modules/scheduler",
+    "pr": "cp -a ./schedulers/pr/. node_modules/scheduler",
+    "stable": "cp -a ./schedulers/stable/. node_modules/"
+  },
+  "jest": {
+    "testTimeout": 20000,
+    "testMatch": [
+      "**/jest/*.js",
+      "**/__tests__/*.js"
+    ],
+    "modulePathIgnorePatterns": [
+      "<rootDir>[/\\\\](schedulers)[/\\\\]"
+    ]
+  }
+}
diff --git a/fixtures/tests/schedulers/pr/scheduler/LICENSE b/fixtures/tests/schedulers/pr/scheduler/LICENSE
new file mode 100644
index 0000000000000..b96dcb0480a0b
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) Facebook, Inc. and its affiliates.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/fixtures/tests/schedulers/pr/scheduler/README.md b/fixtures/tests/schedulers/pr/scheduler/README.md
new file mode 100644
index 0000000000000..10e4937a05b96
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/README.md
@@ -0,0 +1,9 @@
+# `scheduler`
+
+This is a package for cooperative scheduling in a browser environment. It is currently used internally by React, but we plan to make it more generic.
+
+The public API for this package is not yet finalized.
+
+### Thanks
+
+The React team thanks [Anton Podviaznikov](https://podviaznikov.com/) for donating the `scheduler` package name.
diff --git a/fixtures/tests/schedulers/pr/scheduler/build-info.json b/fixtures/tests/schedulers/pr/scheduler/build-info.json
new file mode 100644
index 0000000000000..5617e884a6192
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/build-info.json
@@ -0,0 +1,8 @@
+{
+  "branch": "17.0.1",
+  "buildNumber": "222790",
+  "checksum": "addb3df",
+  "commit": "8e5adfbd7",
+  "environment": "ci",
+  "reactVersion": "17.0.0-8e5adfbd7"
+}
diff --git a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.development.js b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.development.js
new file mode 100644
index 0000000000000..6f7c7b1d9afb2
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.development.js
@@ -0,0 +1,347 @@
+/** @license React vundefined
+ * scheduler-tracing.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+var DEFAULT_THREAD_ID = 0; // Counters used to generate unique IDs.
+
+var interactionIDCounter = 0;
+var threadIDCounter = 0; // Set of currently traced interactions.
+// Interactions "stack"–
+// Meaning that newly traced interactions are appended to the previously active set.
+// When an interaction goes out of scope, the previous set (if any) is restored.
+
+exports.__interactionsRef = null; // Listener(s) to notify when interactions begin and end.
+
+exports.__subscriberRef = null;
+
+{
+  exports.__interactionsRef = {
+    current: new Set()
+  };
+  exports.__subscriberRef = {
+    current: null
+  };
+}
+function unstable_clear(callback) {
+
+  var prevInteractions = exports.__interactionsRef.current;
+  exports.__interactionsRef.current = new Set();
+
+  try {
+    return callback();
+  } finally {
+    exports.__interactionsRef.current = prevInteractions;
+  }
+}
+function unstable_getCurrent() {
+  {
+    return exports.__interactionsRef.current;
+  }
+}
+function unstable_getThreadID() {
+  return ++threadIDCounter;
+}
+function unstable_trace(name, timestamp, callback) {
+  var threadID = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : DEFAULT_THREAD_ID;
+
+  var interaction = {
+    __count: 1,
+    id: interactionIDCounter++,
+    name: name,
+    timestamp: timestamp
+  };
+  var prevInteractions = exports.__interactionsRef.current; // Traced interactions should stack/accumulate.
+  // To do that, clone the current interactions.
+  // The previous set will be restored upon completion.
+
+  var interactions = new Set(prevInteractions);
+  interactions.add(interaction);
+  exports.__interactionsRef.current = interactions;
+  var subscriber = exports.__subscriberRef.current;
+  var returnValue;
+
+  try {
+    if (subscriber !== null) {
+      subscriber.onInteractionTraced(interaction);
+    }
+  } finally {
+    try {
+      if (subscriber !== null) {
+        subscriber.onWorkStarted(interactions, threadID);
+      }
+    } finally {
+      try {
+        returnValue = callback();
+      } finally {
+        exports.__interactionsRef.current = prevInteractions;
+
+        try {
+          if (subscriber !== null) {
+            subscriber.onWorkStopped(interactions, threadID);
+          }
+        } finally {
+          interaction.__count--; // If no async work was scheduled for this interaction,
+          // Notify subscribers that it's completed.
+
+          if (subscriber !== null && interaction.__count === 0) {
+            subscriber.onInteractionScheduledWorkCompleted(interaction);
+          }
+        }
+      }
+    }
+  }
+
+  return returnValue;
+}
+function unstable_wrap(callback) {
+  var threadID = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : DEFAULT_THREAD_ID;
+
+  var wrappedInteractions = exports.__interactionsRef.current;
+  var subscriber = exports.__subscriberRef.current;
+
+  if (subscriber !== null) {
+    subscriber.onWorkScheduled(wrappedInteractions, threadID);
+  } // Update the pending async work count for the current interactions.
+  // Update after calling subscribers in case of error.
+
+
+  wrappedInteractions.forEach(function (interaction) {
+    interaction.__count++;
+  });
+  var hasRun = false;
+
+  function wrapped() {
+    var prevInteractions = exports.__interactionsRef.current;
+    exports.__interactionsRef.current = wrappedInteractions;
+    subscriber = exports.__subscriberRef.current;
+
+    try {
+      var returnValue;
+
+      try {
+        if (subscriber !== null) {
+          subscriber.onWorkStarted(wrappedInteractions, threadID);
+        }
+      } finally {
+        try {
+          returnValue = callback.apply(undefined, arguments);
+        } finally {
+          exports.__interactionsRef.current = prevInteractions;
+
+          if (subscriber !== null) {
+            subscriber.onWorkStopped(wrappedInteractions, threadID);
+          }
+        }
+      }
+
+      return returnValue;
+    } finally {
+      if (!hasRun) {
+        // We only expect a wrapped function to be executed once,
+        // But in the event that it's executed more than once–
+        // Only decrement the outstanding interaction counts once.
+        hasRun = true; // Update pending async counts for all wrapped interactions.
+        // If this was the last scheduled async work for any of them,
+        // Mark them as completed.
+
+        wrappedInteractions.forEach(function (interaction) {
+          interaction.__count--;
+
+          if (subscriber !== null && interaction.__count === 0) {
+            subscriber.onInteractionScheduledWorkCompleted(interaction);
+          }
+        });
+      }
+    }
+  }
+
+  wrapped.cancel = function cancel() {
+    subscriber = exports.__subscriberRef.current;
+
+    try {
+      if (subscriber !== null) {
+        subscriber.onWorkCanceled(wrappedInteractions, threadID);
+      }
+    } finally {
+      // Update pending async counts for all wrapped interactions.
+      // If this was the last scheduled async work for any of them,
+      // Mark them as completed.
+      wrappedInteractions.forEach(function (interaction) {
+        interaction.__count--;
+
+        if (subscriber && interaction.__count === 0) {
+          subscriber.onInteractionScheduledWorkCompleted(interaction);
+        }
+      });
+    }
+  };
+
+  return wrapped;
+}
+
+var subscribers = null;
+
+{
+  subscribers = new Set();
+}
+
+function unstable_subscribe(subscriber) {
+  {
+    subscribers.add(subscriber);
+
+    if (subscribers.size === 1) {
+      exports.__subscriberRef.current = {
+        onInteractionScheduledWorkCompleted: onInteractionScheduledWorkCompleted,
+        onInteractionTraced: onInteractionTraced,
+        onWorkCanceled: onWorkCanceled,
+        onWorkScheduled: onWorkScheduled,
+        onWorkStarted: onWorkStarted,
+        onWorkStopped: onWorkStopped
+      };
+    }
+  }
+}
+function unstable_unsubscribe(subscriber) {
+  {
+    subscribers.delete(subscriber);
+
+    if (subscribers.size === 0) {
+      exports.__subscriberRef.current = null;
+    }
+  }
+}
+
+function onInteractionTraced(interaction) {
+  var didCatchError = false;
+  var caughtError = null;
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onInteractionTraced(interaction);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+function onInteractionScheduledWorkCompleted(interaction) {
+  var didCatchError = false;
+  var caughtError = null;
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onInteractionScheduledWorkCompleted(interaction);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+function onWorkScheduled(interactions, threadID) {
+  var didCatchError = false;
+  var caughtError = null;
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onWorkScheduled(interactions, threadID);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+function onWorkStarted(interactions, threadID) {
+  var didCatchError = false;
+  var caughtError = null;
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onWorkStarted(interactions, threadID);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+function onWorkStopped(interactions, threadID) {
+  var didCatchError = false;
+  var caughtError = null;
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onWorkStopped(interactions, threadID);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+function onWorkCanceled(interactions, threadID) {
+  var didCatchError = false;
+  var caughtError = null;
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onWorkCanceled(interactions, threadID);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+exports.unstable_clear = unstable_clear;
+exports.unstable_getCurrent = unstable_getCurrent;
+exports.unstable_getThreadID = unstable_getThreadID;
+exports.unstable_subscribe = unstable_subscribe;
+exports.unstable_trace = unstable_trace;
+exports.unstable_unsubscribe = unstable_unsubscribe;
+exports.unstable_wrap = unstable_wrap;
+  })();
+}
diff --git a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.production.min.js b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.production.min.js
new file mode 100644
index 0000000000000..a633bc54cbbe0
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.production.min.js
@@ -0,0 +1,9 @@
+/** @license React vundefined
+ * scheduler-tracing.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+'use strict';var b=0;exports.__interactionsRef=null;exports.__subscriberRef=null;exports.unstable_clear=function(a){return a()};exports.unstable_getCurrent=function(){return null};exports.unstable_getThreadID=function(){return++b};exports.unstable_subscribe=function(){};exports.unstable_trace=function(a,d,c){return c()};exports.unstable_unsubscribe=function(){};exports.unstable_wrap=function(a){return a};
diff --git a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.profiling.min.js b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.profiling.min.js
new file mode 100644
index 0000000000000..d7d849b85057c
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.profiling.min.js
@@ -0,0 +1,16 @@
+/** @license React vundefined
+ * scheduler-tracing.profiling.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+'use strict';var g=0,l=0;exports.__interactionsRef=null;exports.__subscriberRef=null;exports.__interactionsRef={current:new Set};exports.__subscriberRef={current:null};var m=null;m=new Set;function n(e){var d=!1,a=null;m.forEach(function(c){try{c.onInteractionTraced(e)}catch(b){d||(d=!0,a=b)}});if(d)throw a;}function p(e){var d=!1,a=null;m.forEach(function(c){try{c.onInteractionScheduledWorkCompleted(e)}catch(b){d||(d=!0,a=b)}});if(d)throw a;}
+function q(e,d){var a=!1,c=null;m.forEach(function(b){try{b.onWorkScheduled(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}function r(e,d){var a=!1,c=null;m.forEach(function(b){try{b.onWorkStarted(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}function t(e,d){var a=!1,c=null;m.forEach(function(b){try{b.onWorkStopped(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}function u(e,d){var a=!1,c=null;m.forEach(function(b){try{b.onWorkCanceled(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}
+exports.unstable_clear=function(e){var d=exports.__interactionsRef.current;exports.__interactionsRef.current=new Set;try{return e()}finally{exports.__interactionsRef.current=d}};exports.unstable_getCurrent=function(){return exports.__interactionsRef.current};exports.unstable_getThreadID=function(){return++l};
+exports.unstable_subscribe=function(e){m.add(e);1===m.size&&(exports.__subscriberRef.current={onInteractionScheduledWorkCompleted:p,onInteractionTraced:n,onWorkCanceled:u,onWorkScheduled:q,onWorkStarted:r,onWorkStopped:t})};
+exports.unstable_trace=function(e,d,a){var c=3<arguments.length&&void 0!==arguments[3]?arguments[3]:0,b={__count:1,id:g++,name:e,timestamp:d},f=exports.__interactionsRef.current,k=new Set(f);k.add(b);exports.__interactionsRef.current=k;var h=exports.__subscriberRef.current;try{if(null!==h)h.onInteractionTraced(b)}finally{try{if(null!==h)h.onWorkStarted(k,c)}finally{try{var v=a()}finally{exports.__interactionsRef.current=f;try{if(null!==h)h.onWorkStopped(k,c)}finally{if(b.__count--,null!==h&&0===b.__count)h.onInteractionScheduledWorkCompleted(b)}}}}return v};
+exports.unstable_unsubscribe=function(e){m.delete(e);0===m.size&&(exports.__subscriberRef.current=null)};
+exports.unstable_wrap=function(e){function d(){var d=exports.__interactionsRef.current;exports.__interactionsRef.current=c;b=exports.__subscriberRef.current;try{try{if(null!==b)b.onWorkStarted(c,a)}finally{try{var h=e.apply(void 0,arguments)}finally{if(exports.__interactionsRef.current=d,null!==b)b.onWorkStopped(c,a)}}return h}finally{f||(f=!0,c.forEach(function(a){a.__count--;if(null!==b&&0===a.__count)b.onInteractionScheduledWorkCompleted(a)}))}}var a=1<arguments.length&&void 0!==arguments[1]?arguments[1]:
+0,c=exports.__interactionsRef.current,b=exports.__subscriberRef.current;if(null!==b)b.onWorkScheduled(c,a);c.forEach(function(a){a.__count++});var f=!1;d.cancel=function(){b=exports.__subscriberRef.current;try{if(null!==b)b.onWorkCanceled(c,a)}finally{c.forEach(function(a){a.__count--;if(b&&0===a.__count)b.onInteractionScheduledWorkCompleted(a)})}};return d};
diff --git a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_mock.development.js b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_mock.development.js
new file mode 100644
index 0000000000000..e2c6dd560abe9
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_mock.development.js
@@ -0,0 +1,694 @@
+/** @license React vundefined
+ * scheduler-unstable_mock.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+var enableSchedulerDebugging = false;
+var enableProfiling = false;
+
+function push(heap, node) {
+  var index = heap.length;
+  heap.push(node);
+  siftUp(heap, node, index);
+}
+function peek(heap) {
+  var first = heap[0];
+  return first === undefined ? null : first;
+}
+function pop(heap) {
+  var first = heap[0];
+
+  if (first !== undefined) {
+    var last = heap.pop();
+
+    if (last !== first) {
+      heap[0] = last;
+      siftDown(heap, last, 0);
+    }
+
+    return first;
+  } else {
+    return null;
+  }
+}
+
+function siftUp(heap, node, i) {
+  var index = i;
+
+  while (true) {
+    var parentIndex = index - 1 >>> 1;
+    var parent = heap[parentIndex];
+
+    if (parent !== undefined && compare(parent, node) > 0) {
+      // The parent is larger. Swap positions.
+      heap[parentIndex] = node;
+      heap[index] = parent;
+      index = parentIndex;
+    } else {
+      // The parent is smaller. Exit.
+      return;
+    }
+  }
+}
+
+function siftDown(heap, node, i) {
+  var index = i;
+  var length = heap.length;
+
+  while (index < length) {
+    var leftIndex = (index + 1) * 2 - 1;
+    var left = heap[leftIndex];
+    var rightIndex = leftIndex + 1;
+    var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those.
+
+    if (left !== undefined && compare(left, node) < 0) {
+      if (right !== undefined && compare(right, left) < 0) {
+        heap[index] = right;
+        heap[rightIndex] = node;
+        index = rightIndex;
+      } else {
+        heap[index] = left;
+        heap[leftIndex] = node;
+        index = leftIndex;
+      }
+    } else if (right !== undefined && compare(right, node) < 0) {
+      heap[index] = right;
+      heap[rightIndex] = node;
+      index = rightIndex;
+    } else {
+      // Neither child is smaller. Exit.
+      return;
+    }
+  }
+}
+
+function compare(a, b) {
+  // Compare sort index first, then task id.
+  var diff = a.sortIndex - b.sortIndex;
+  return diff !== 0 ? diff : a.id - b.id;
+}
+
+// TODO: Use symbols?
+var ImmediatePriority = 1;
+var UserBlockingPriority = 2;
+var NormalPriority = 3;
+var LowPriority = 4;
+var IdlePriority = 5;
+
+function markTaskErrored(task, ms) {
+}
+
+/* eslint-disable no-var */
+// Math.pow(2, 30) - 1
+// 0b111111111111111111111111111111
+
+var maxSigned31BitInt = 1073741823; // Times out immediately
+
+var IMMEDIATE_PRIORITY_TIMEOUT = -1; // Eventually times out
+
+var USER_BLOCKING_PRIORITY_TIMEOUT = 250;
+var NORMAL_PRIORITY_TIMEOUT = 5000;
+var LOW_PRIORITY_TIMEOUT = 10000; // Never times out
+
+var IDLE_PRIORITY_TIMEOUT = maxSigned31BitInt; // Tasks are stored on a min heap
+
+var taskQueue = [];
+var timerQueue = []; // Incrementing id counter. Used to maintain insertion order.
+
+var taskIdCounter = 1; // Pausing the scheduler is useful for debugging.
+var currentTask = null;
+var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrancy.
+
+var isPerformingWork = false;
+var isHostCallbackScheduled = false;
+var isHostTimeoutScheduled = false;
+var currentMockTime = 0;
+var scheduledCallback = null;
+var scheduledTimeout = null;
+var timeoutTime = -1;
+var yieldedValues = null;
+var expectedNumberOfYields = -1;
+var didStop = false;
+var isFlushing = false;
+var needsPaint = false;
+var shouldYieldForPaint = false;
+
+function advanceTimers(currentTime) {
+  // Check for tasks that are no longer delayed and add them to the queue.
+  var timer = peek(timerQueue);
+
+  while (timer !== null) {
+    if (timer.callback === null) {
+      // Timer was cancelled.
+      pop(timerQueue);
+    } else if (timer.startTime <= currentTime) {
+      // Timer fired. Transfer to the task queue.
+      pop(timerQueue);
+      timer.sortIndex = timer.expirationTime;
+      push(taskQueue, timer);
+    } else {
+      // Remaining timers are pending.
+      return;
+    }
+
+    timer = peek(timerQueue);
+  }
+}
+
+function handleTimeout(currentTime) {
+  isHostTimeoutScheduled = false;
+  advanceTimers(currentTime);
+
+  if (!isHostCallbackScheduled) {
+    if (peek(taskQueue) !== null) {
+      isHostCallbackScheduled = true;
+      requestHostCallback(flushWork);
+    } else {
+      var firstTimer = peek(timerQueue);
+
+      if (firstTimer !== null) {
+        requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
+      }
+    }
+  }
+}
+
+function flushWork(hasTimeRemaining, initialTime) {
+
+
+  isHostCallbackScheduled = false;
+
+  if (isHostTimeoutScheduled) {
+    // We scheduled a timeout but it's no longer needed. Cancel it.
+    isHostTimeoutScheduled = false;
+    cancelHostTimeout();
+  }
+
+  isPerformingWork = true;
+  var previousPriorityLevel = currentPriorityLevel;
+
+  try {
+    if (enableProfiling) {
+      try {
+        return workLoop(hasTimeRemaining, initialTime);
+      } catch (error) {
+        if (currentTask !== null) {
+          var currentTime = getCurrentTime();
+          markTaskErrored(currentTask, currentTime);
+          currentTask.isQueued = false;
+        }
+
+        throw error;
+      }
+    } else {
+      // No catch in prod code path.
+      return workLoop(hasTimeRemaining, initialTime);
+    }
+  } finally {
+    currentTask = null;
+    currentPriorityLevel = previousPriorityLevel;
+    isPerformingWork = false;
+  }
+}
+
+function workLoop(hasTimeRemaining, initialTime) {
+  var currentTime = initialTime;
+  advanceTimers(currentTime);
+  currentTask = peek(taskQueue);
+
+  while (currentTask !== null && !(enableSchedulerDebugging )) {
+    if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost())) {
+      // This currentTask hasn't expired, and we've reached the deadline.
+      break;
+    }
+
+    var callback = currentTask.callback;
+
+    if (typeof callback === 'function') {
+      currentTask.callback = null;
+      currentPriorityLevel = currentTask.priorityLevel;
+      var didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
+
+      var continuationCallback = callback(didUserCallbackTimeout);
+      currentTime = getCurrentTime();
+
+      if (typeof continuationCallback === 'function') {
+        currentTask.callback = continuationCallback;
+      } else {
+
+        if (currentTask === peek(taskQueue)) {
+          pop(taskQueue);
+        }
+      }
+
+      advanceTimers(currentTime);
+    } else {
+      pop(taskQueue);
+    }
+
+    currentTask = peek(taskQueue);
+  } // Return whether there's additional work
+
+
+  if (currentTask !== null) {
+    return true;
+  } else {
+    var firstTimer = peek(timerQueue);
+
+    if (firstTimer !== null) {
+      requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
+    }
+
+    return false;
+  }
+}
+
+function unstable_runWithPriority(priorityLevel, eventHandler) {
+  switch (priorityLevel) {
+    case ImmediatePriority:
+    case UserBlockingPriority:
+    case NormalPriority:
+    case LowPriority:
+    case IdlePriority:
+      break;
+
+    default:
+      priorityLevel = NormalPriority;
+  }
+
+  var previousPriorityLevel = currentPriorityLevel;
+  currentPriorityLevel = priorityLevel;
+
+  try {
+    return eventHandler();
+  } finally {
+    currentPriorityLevel = previousPriorityLevel;
+  }
+}
+
+function unstable_next(eventHandler) {
+  var priorityLevel;
+
+  switch (currentPriorityLevel) {
+    case ImmediatePriority:
+    case UserBlockingPriority:
+    case NormalPriority:
+      // Shift down to normal priority
+      priorityLevel = NormalPriority;
+      break;
+
+    default:
+      // Anything lower than normal priority should remain at the current level.
+      priorityLevel = currentPriorityLevel;
+      break;
+  }
+
+  var previousPriorityLevel = currentPriorityLevel;
+  currentPriorityLevel = priorityLevel;
+
+  try {
+    return eventHandler();
+  } finally {
+    currentPriorityLevel = previousPriorityLevel;
+  }
+}
+
+function unstable_wrapCallback(callback) {
+  var parentPriorityLevel = currentPriorityLevel;
+  return function () {
+    // This is a fork of runWithPriority, inlined for performance.
+    var previousPriorityLevel = currentPriorityLevel;
+    currentPriorityLevel = parentPriorityLevel;
+
+    try {
+      return callback.apply(this, arguments);
+    } finally {
+      currentPriorityLevel = previousPriorityLevel;
+    }
+  };
+}
+
+function unstable_scheduleCallback(priorityLevel, callback, options) {
+  var currentTime = getCurrentTime();
+  var startTime;
+
+  if (typeof options === 'object' && options !== null) {
+    var delay = options.delay;
+
+    if (typeof delay === 'number' && delay > 0) {
+      startTime = currentTime + delay;
+    } else {
+      startTime = currentTime;
+    }
+  } else {
+    startTime = currentTime;
+  }
+
+  var timeout;
+
+  switch (priorityLevel) {
+    case ImmediatePriority:
+      timeout = IMMEDIATE_PRIORITY_TIMEOUT;
+      break;
+
+    case UserBlockingPriority:
+      timeout = USER_BLOCKING_PRIORITY_TIMEOUT;
+      break;
+
+    case IdlePriority:
+      timeout = IDLE_PRIORITY_TIMEOUT;
+      break;
+
+    case LowPriority:
+      timeout = LOW_PRIORITY_TIMEOUT;
+      break;
+
+    case NormalPriority:
+    default:
+      timeout = NORMAL_PRIORITY_TIMEOUT;
+      break;
+  }
+
+  var expirationTime = startTime + timeout;
+  var newTask = {
+    id: taskIdCounter++,
+    callback: callback,
+    priorityLevel: priorityLevel,
+    startTime: startTime,
+    expirationTime: expirationTime,
+    sortIndex: -1
+  };
+
+  if (startTime > currentTime) {
+    // This is a delayed task.
+    newTask.sortIndex = startTime;
+    push(timerQueue, newTask);
+
+    if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
+      // All tasks are delayed, and this is the task with the earliest delay.
+      if (isHostTimeoutScheduled) {
+        // Cancel an existing timeout.
+        cancelHostTimeout();
+      } else {
+        isHostTimeoutScheduled = true;
+      } // Schedule a timeout.
+
+
+      requestHostTimeout(handleTimeout, startTime - currentTime);
+    }
+  } else {
+    newTask.sortIndex = expirationTime;
+    push(taskQueue, newTask);
+    // wait until the next time we yield.
+
+
+    if (!isHostCallbackScheduled && !isPerformingWork) {
+      isHostCallbackScheduled = true;
+      requestHostCallback(flushWork);
+    }
+  }
+
+  return newTask;
+}
+
+function unstable_pauseExecution() {
+}
+
+function unstable_continueExecution() {
+
+  if (!isHostCallbackScheduled && !isPerformingWork) {
+    isHostCallbackScheduled = true;
+    requestHostCallback(flushWork);
+  }
+}
+
+function unstable_getFirstCallbackNode() {
+  return peek(taskQueue);
+}
+
+function unstable_cancelCallback(task) {
+  // remove from the queue because you can't remove arbitrary nodes from an
+  // array based heap, only the first one.)
+
+
+  task.callback = null;
+}
+
+function unstable_getCurrentPriorityLevel() {
+  return currentPriorityLevel;
+}
+
+function requestHostCallback(callback) {
+  scheduledCallback = callback;
+}
+
+function requestHostTimeout(callback, ms) {
+  scheduledTimeout = callback;
+  timeoutTime = currentMockTime + ms;
+}
+
+function cancelHostTimeout() {
+  scheduledTimeout = null;
+  timeoutTime = -1;
+}
+
+function shouldYieldToHost() {
+  if (expectedNumberOfYields !== -1 && yieldedValues !== null && yieldedValues.length >= expectedNumberOfYields || shouldYieldForPaint && needsPaint) {
+    // We yielded at least as many values as expected. Stop flushing.
+    didStop = true;
+    return true;
+  }
+
+  return false;
+}
+
+function getCurrentTime() {
+  return currentMockTime;
+}
+
+function forceFrameRate() {// No-op
+}
+
+function reset() {
+  if (isFlushing) {
+    throw new Error('Cannot reset while already flushing work.');
+  }
+
+  currentMockTime = 0;
+  scheduledCallback = null;
+  scheduledTimeout = null;
+  timeoutTime = -1;
+  yieldedValues = null;
+  expectedNumberOfYields = -1;
+  didStop = false;
+  isFlushing = false;
+  needsPaint = false;
+} // Should only be used via an assertion helper that inspects the yielded values.
+
+
+function unstable_flushNumberOfYields(count) {
+  if (isFlushing) {
+    throw new Error('Already flushing work.');
+  }
+
+  if (scheduledCallback !== null) {
+    var cb = scheduledCallback;
+    expectedNumberOfYields = count;
+    isFlushing = true;
+
+    try {
+      var hasMoreWork = true;
+
+      do {
+        hasMoreWork = cb(true, currentMockTime);
+      } while (hasMoreWork && !didStop);
+
+      if (!hasMoreWork) {
+        scheduledCallback = null;
+      }
+    } finally {
+      expectedNumberOfYields = -1;
+      didStop = false;
+      isFlushing = false;
+    }
+  }
+}
+
+function unstable_flushUntilNextPaint() {
+  if (isFlushing) {
+    throw new Error('Already flushing work.');
+  }
+
+  if (scheduledCallback !== null) {
+    var cb = scheduledCallback;
+    shouldYieldForPaint = true;
+    needsPaint = false;
+    isFlushing = true;
+
+    try {
+      var hasMoreWork = true;
+
+      do {
+        hasMoreWork = cb(true, currentMockTime);
+      } while (hasMoreWork && !didStop);
+
+      if (!hasMoreWork) {
+        scheduledCallback = null;
+      }
+    } finally {
+      shouldYieldForPaint = false;
+      didStop = false;
+      isFlushing = false;
+    }
+  }
+}
+
+function unstable_flushExpired() {
+  if (isFlushing) {
+    throw new Error('Already flushing work.');
+  }
+
+  if (scheduledCallback !== null) {
+    isFlushing = true;
+
+    try {
+      var hasMoreWork = scheduledCallback(false, currentMockTime);
+
+      if (!hasMoreWork) {
+        scheduledCallback = null;
+      }
+    } finally {
+      isFlushing = false;
+    }
+  }
+}
+
+function unstable_flushAllWithoutAsserting() {
+  // Returns false if no work was flushed.
+  if (isFlushing) {
+    throw new Error('Already flushing work.');
+  }
+
+  if (scheduledCallback !== null) {
+    var cb = scheduledCallback;
+    isFlushing = true;
+
+    try {
+      var hasMoreWork = true;
+
+      do {
+        hasMoreWork = cb(true, currentMockTime);
+      } while (hasMoreWork);
+
+      if (!hasMoreWork) {
+        scheduledCallback = null;
+      }
+
+      return true;
+    } finally {
+      isFlushing = false;
+    }
+  } else {
+    return false;
+  }
+}
+
+function unstable_clearYields() {
+  if (yieldedValues === null) {
+    return [];
+  }
+
+  var values = yieldedValues;
+  yieldedValues = null;
+  return values;
+}
+
+function unstable_flushAll() {
+  if (yieldedValues !== null) {
+    throw new Error('Log is not empty. Assert on the log of yielded values before ' + 'flushing additional work.');
+  }
+
+  unstable_flushAllWithoutAsserting();
+
+  if (yieldedValues !== null) {
+    throw new Error('While flushing work, something yielded a value. Use an ' + 'assertion helper to assert on the log of yielded values, e.g. ' + 'expect(Scheduler).toFlushAndYield([...])');
+  }
+}
+
+function unstable_yieldValue(value) {
+  // eslint-disable-next-line react-internal/no-production-logging
+  if (console.log.name === 'disabledLog') {
+    // If console.log has been patched, we assume we're in render
+    // replaying and we ignore any values yielding in the second pass.
+    return;
+  }
+
+  if (yieldedValues === null) {
+    yieldedValues = [value];
+  } else {
+    yieldedValues.push(value);
+  }
+}
+
+function unstable_advanceTime(ms) {
+  // eslint-disable-next-line react-internal/no-production-logging
+  if (console.log.name === 'disabledLog') {
+    // If console.log has been patched, we assume we're in render
+    // replaying and we ignore any time advancing in the second pass.
+    return;
+  }
+
+  currentMockTime += ms;
+
+  if (scheduledTimeout !== null && timeoutTime <= currentMockTime) {
+    scheduledTimeout(currentMockTime);
+    timeoutTime = -1;
+    scheduledTimeout = null;
+  }
+}
+
+function requestPaint() {
+  needsPaint = true;
+}
+var unstable_Profiling =  null;
+
+exports.reset = reset;
+exports.unstable_IdlePriority = IdlePriority;
+exports.unstable_ImmediatePriority = ImmediatePriority;
+exports.unstable_LowPriority = LowPriority;
+exports.unstable_NormalPriority = NormalPriority;
+exports.unstable_Profiling = unstable_Profiling;
+exports.unstable_UserBlockingPriority = UserBlockingPriority;
+exports.unstable_advanceTime = unstable_advanceTime;
+exports.unstable_cancelCallback = unstable_cancelCallback;
+exports.unstable_clearYields = unstable_clearYields;
+exports.unstable_continueExecution = unstable_continueExecution;
+exports.unstable_flushAll = unstable_flushAll;
+exports.unstable_flushAllWithoutAsserting = unstable_flushAllWithoutAsserting;
+exports.unstable_flushExpired = unstable_flushExpired;
+exports.unstable_flushNumberOfYields = unstable_flushNumberOfYields;
+exports.unstable_flushUntilNextPaint = unstable_flushUntilNextPaint;
+exports.unstable_forceFrameRate = forceFrameRate;
+exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
+exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
+exports.unstable_next = unstable_next;
+exports.unstable_now = getCurrentTime;
+exports.unstable_pauseExecution = unstable_pauseExecution;
+exports.unstable_requestPaint = requestPaint;
+exports.unstable_runWithPriority = unstable_runWithPriority;
+exports.unstable_scheduleCallback = unstable_scheduleCallback;
+exports.unstable_shouldYield = shouldYieldToHost;
+exports.unstable_wrapCallback = unstable_wrapCallback;
+exports.unstable_yieldValue = unstable_yieldValue;
+  })();
+}
diff --git a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_mock.production.min.js b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_mock.production.min.js
new file mode 100644
index 0000000000000..8f441705bf496
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_mock.production.min.js
@@ -0,0 +1,19 @@
+/** @license React vundefined
+ * scheduler-unstable_mock.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+'use strict';function f(a,b){var c=a.length;a.push(b);a:for(;;){var d=c-1>>>1,e=a[d];if(void 0!==e&&0<g(e,b))a[d]=b,a[c]=e,c=d;else break a}}function h(a){a=a[0];return void 0===a?null:a}function k(a){var b=a[0];if(void 0!==b){var c=a.pop();if(c!==b){a[0]=c;a:for(var d=0,e=a.length;d<e;){var u=2*(d+1)-1,v=a[u],w=u+1,y=a[w];if(void 0!==v&&0>g(v,c))void 0!==y&&0>g(y,v)?(a[d]=y,a[w]=c,d=w):(a[d]=v,a[u]=c,d=u);else if(void 0!==y&&0>g(y,c))a[d]=y,a[w]=c,d=w;else break a}}return b}return null}
+function g(a,b){var c=a.sortIndex-b.sortIndex;return 0!==c?c:a.id-b.id}var l=[],m=[],n=1,p=null,q=3,r=!1,t=!1,x=!1,z=0,A=null,B=null,C=-1,D=null,E=-1,F=!1,G=!1,H=!1,I=!1;function J(a){for(var b=h(m);null!==b;){if(null===b.callback)k(m);else if(b.startTime<=a)k(m),b.sortIndex=b.expirationTime,f(l,b);else break;b=h(m)}}function K(a){x=!1;J(a);if(!t)if(null!==h(l))t=!0,A=L;else{var b=h(m);null!==b&&(a=b.startTime-a,B=K,C=z+a)}}
+function L(a,b){t=!1;x&&(x=!1,B=null,C=-1);r=!0;var c=q;try{J(b);for(p=h(l);null!==p&&(!(p.expirationTime>b)||a&&!M());){var d=p.callback;if("function"===typeof d){p.callback=null;q=p.priorityLevel;var e=d(p.expirationTime<=b);b=z;"function"===typeof e?p.callback=e:p===h(l)&&k(l);J(b)}else k(l);p=h(l)}if(null!==p)var u=!0;else{var v=h(m);if(null!==v){var w=v.startTime-b;B=K;C=z+w}u=!1}return u}finally{p=null,q=c,r=!1}}function M(){return-1!==E&&null!==D&&D.length>=E||I&&H?F=!0:!1}
+function N(){if(G)throw Error("Already flushing work.");if(null!==A){var a=A;G=!0;try{var b=!0;do b=a(!0,z);while(b);b||(A=null);return!0}finally{G=!1}}else return!1}exports.reset=function(){if(G)throw Error("Cannot reset while already flushing work.");z=0;B=A=null;C=-1;D=null;E=-1;H=G=F=!1};exports.unstable_IdlePriority=5;exports.unstable_ImmediatePriority=1;exports.unstable_LowPriority=4;exports.unstable_NormalPriority=3;exports.unstable_Profiling=null;exports.unstable_UserBlockingPriority=2;
+exports.unstable_advanceTime=function(a){"disabledLog"!==console.log.name&&(z+=a,null!==B&&C<=z&&(B(z),C=-1,B=null))};exports.unstable_cancelCallback=function(a){a.callback=null};exports.unstable_clearYields=function(){if(null===D)return[];var a=D;D=null;return a};exports.unstable_continueExecution=function(){t||r||(t=!0,A=L)};
+exports.unstable_flushAll=function(){if(null!==D)throw Error("Log is not empty. Assert on the log of yielded values before flushing additional work.");N();if(null!==D)throw Error("While flushing work, something yielded a value. Use an assertion helper to assert on the log of yielded values, e.g. expect(Scheduler).toFlushAndYield([...])");};exports.unstable_flushAllWithoutAsserting=N;
+exports.unstable_flushExpired=function(){if(G)throw Error("Already flushing work.");if(null!==A){G=!0;try{A(!1,z)||(A=null)}finally{G=!1}}};exports.unstable_flushNumberOfYields=function(a){if(G)throw Error("Already flushing work.");if(null!==A){var b=A;E=a;G=!0;try{a=!0;do a=b(!0,z);while(a&&!F);a||(A=null)}finally{E=-1,G=F=!1}}};
+exports.unstable_flushUntilNextPaint=function(){if(G)throw Error("Already flushing work.");if(null!==A){var a=A;I=!0;H=!1;G=!0;try{var b=!0;do b=a(!0,z);while(b&&!F);b||(A=null)}finally{G=F=I=!1}}};exports.unstable_forceFrameRate=function(){};exports.unstable_getCurrentPriorityLevel=function(){return q};exports.unstable_getFirstCallbackNode=function(){return h(l)};exports.unstable_next=function(a){switch(q){case 1:case 2:case 3:var b=3;break;default:b=q}var c=q;q=b;try{return a()}finally{q=c}};
+exports.unstable_now=function(){return z};exports.unstable_pauseExecution=function(){};exports.unstable_requestPaint=function(){H=!0};exports.unstable_runWithPriority=function(a,b){switch(a){case 1:case 2:case 3:case 4:case 5:break;default:a=3}var c=q;q=a;try{return b()}finally{q=c}};
+exports.unstable_scheduleCallback=function(a,b,c){var d=z;"object"===typeof c&&null!==c?(c=c.delay,c="number"===typeof c&&0<c?d+c:d):c=d;switch(a){case 1:var e=-1;break;case 2:e=250;break;case 5:e=1073741823;break;case 4:e=1E4;break;default:e=5E3}e=c+e;a={id:n++,callback:b,priorityLevel:a,startTime:c,expirationTime:e,sortIndex:-1};c>d?(a.sortIndex=c,f(m,a),null===h(l)&&a===h(m)&&(x?(B=null,C=-1):x=!0,B=K,C=z+(c-d))):(a.sortIndex=e,f(l,a),t||r||(t=!0,A=L));return a};exports.unstable_shouldYield=M;
+exports.unstable_wrapCallback=function(a){var b=q;return function(){var c=q;q=b;try{return a.apply(this,arguments)}finally{q=c}}};exports.unstable_yieldValue=function(a){"disabledLog"!==console.log.name&&(null===D?D=[a]:D.push(a))};
diff --git a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_post_task.development.js b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_post_task.development.js
new file mode 100644
index 0000000000000..669db876d6a16
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_post_task.development.js
@@ -0,0 +1,206 @@
+/** @license React vundefined
+ * scheduler-unstable_post_task.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+// TODO: Use symbols?
+var ImmediatePriority = 1;
+var UserBlockingPriority = 2;
+var NormalPriority = 3;
+var LowPriority = 4;
+var IdlePriority = 5;
+
+var perf = window.performance;
+var setTimeout = window.setTimeout; // Use experimental Chrome Scheduler postTask API.
+
+var scheduler = global.scheduler;
+var getCurrentTime = perf.now.bind(perf);
+var unstable_now = getCurrentTime; // Scheduler periodically yields in case there is other work on the main
+// thread, like user events. By default, it yields multiple times per frame.
+// It does not attempt to align with frame boundaries, since most tasks don't
+// need to be frame aligned; for those that do, use requestAnimationFrame.
+
+var yieldInterval = 5;
+var deadline = 0;
+var currentPriorityLevel_DEPRECATED = NormalPriority; // `isInputPending` is not available. Since we have no way of knowing if
+// there's pending input, always yield at the end of the frame.
+
+function unstable_shouldYield() {
+  return getCurrentTime() >= deadline;
+}
+function unstable_requestPaint() {// Since we yield every frame regardless, `requestPaint` has no effect.
+}
+function unstable_scheduleCallback(priorityLevel, callback, options) {
+  var postTaskPriority;
+
+  switch (priorityLevel) {
+    case ImmediatePriority:
+    case UserBlockingPriority:
+      postTaskPriority = 'user-blocking';
+      break;
+
+    case LowPriority:
+    case NormalPriority:
+      postTaskPriority = 'user-visible';
+      break;
+
+    case IdlePriority:
+      postTaskPriority = 'background';
+      break;
+
+    default:
+      postTaskPriority = 'user-visible';
+      break;
+  }
+
+  var controller = new TaskController();
+  var postTaskOptions = {
+    priority: postTaskPriority,
+    delay: typeof options === 'object' && options !== null ? options.delay : 0,
+    signal: controller.signal
+  };
+  var node = {
+    _controller: controller
+  };
+  scheduler.postTask(runTask.bind(null, priorityLevel, postTaskPriority, node, callback), postTaskOptions).catch(handleAbortError);
+  return node;
+}
+
+function runTask(priorityLevel, postTaskPriority, node, callback) {
+  deadline = getCurrentTime() + yieldInterval;
+
+  try {
+    currentPriorityLevel_DEPRECATED = priorityLevel;
+    var _didTimeout_DEPRECATED = false;
+    var result = callback(_didTimeout_DEPRECATED);
+
+    if (typeof result === 'function') {
+      // Assume this is a continuation
+      var continuation = result;
+      var continuationController = new TaskController();
+      var continuationOptions = {
+        priority: postTaskPriority,
+        signal: continuationController.signal
+      }; // Update the original callback node's controller, since even though we're
+      // posting a new task, conceptually it's the same one.
+
+      node._controller = continuationController;
+      scheduler.postTask(runTask.bind(null, priorityLevel, postTaskPriority, node, continuation), continuationOptions).catch(handleAbortError);
+    }
+  } catch (error) {
+    // We're inside a `postTask` promise. If we don't handle this error, then it
+    // will trigger an "Unhandled promise rejection" error. We don't want that,
+    // but we do want the default error reporting behavior that normal
+    // (non-Promise) tasks get for unhandled errors.
+    //
+    // So we'll re-throw the error inside a regular browser task.
+    setTimeout(function () {
+      throw error;
+    });
+  } finally {
+    currentPriorityLevel_DEPRECATED = NormalPriority;
+  }
+}
+
+function handleAbortError(error) {// Abort errors are an implementation detail. We don't expose the
+  // TaskController to the user, nor do we expose the promise that is returned
+  // from `postTask`. So we should suppress them, since there's no way for the
+  // user to handle them.
+}
+
+function unstable_cancelCallback(node) {
+  var controller = node._controller;
+  controller.abort();
+}
+function unstable_runWithPriority(priorityLevel, callback) {
+  var previousPriorityLevel = currentPriorityLevel_DEPRECATED;
+  currentPriorityLevel_DEPRECATED = priorityLevel;
+
+  try {
+    return callback();
+  } finally {
+    currentPriorityLevel_DEPRECATED = previousPriorityLevel;
+  }
+}
+function unstable_getCurrentPriorityLevel() {
+  return currentPriorityLevel_DEPRECATED;
+}
+function unstable_next(callback) {
+  var priorityLevel;
+
+  switch (currentPriorityLevel_DEPRECATED) {
+    case ImmediatePriority:
+    case UserBlockingPriority:
+    case NormalPriority:
+      // Shift down to normal priority
+      priorityLevel = NormalPriority;
+      break;
+
+    default:
+      // Anything lower than normal priority should remain at the current level.
+      priorityLevel = currentPriorityLevel_DEPRECATED;
+      break;
+  }
+
+  var previousPriorityLevel = currentPriorityLevel_DEPRECATED;
+  currentPriorityLevel_DEPRECATED = priorityLevel;
+
+  try {
+    return callback();
+  } finally {
+    currentPriorityLevel_DEPRECATED = previousPriorityLevel;
+  }
+}
+function unstable_wrapCallback(callback) {
+  var parentPriorityLevel = currentPriorityLevel_DEPRECATED;
+  return function () {
+    var previousPriorityLevel = currentPriorityLevel_DEPRECATED;
+    currentPriorityLevel_DEPRECATED = parentPriorityLevel;
+
+    try {
+      return callback();
+    } finally {
+      currentPriorityLevel_DEPRECATED = previousPriorityLevel;
+    }
+  };
+}
+function unstable_forceFrameRate() {}
+function unstable_pauseExecution() {}
+function unstable_continueExecution() {}
+function unstable_getFirstCallbackNode() {
+  return null;
+} // Currently no profiling build
+
+var unstable_Profiling = null;
+
+exports.unstable_IdlePriority = IdlePriority;
+exports.unstable_ImmediatePriority = ImmediatePriority;
+exports.unstable_LowPriority = LowPriority;
+exports.unstable_NormalPriority = NormalPriority;
+exports.unstable_Profiling = unstable_Profiling;
+exports.unstable_UserBlockingPriority = UserBlockingPriority;
+exports.unstable_cancelCallback = unstable_cancelCallback;
+exports.unstable_continueExecution = unstable_continueExecution;
+exports.unstable_forceFrameRate = unstable_forceFrameRate;
+exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
+exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
+exports.unstable_next = unstable_next;
+exports.unstable_now = unstable_now;
+exports.unstable_pauseExecution = unstable_pauseExecution;
+exports.unstable_requestPaint = unstable_requestPaint;
+exports.unstable_runWithPriority = unstable_runWithPriority;
+exports.unstable_scheduleCallback = unstable_scheduleCallback;
+exports.unstable_shouldYield = unstable_shouldYield;
+exports.unstable_wrapCallback = unstable_wrapCallback;
+  })();
+}
diff --git a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_post_task.production.min.js b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_post_task.production.min.js
new file mode 100644
index 0000000000000..3e12bdb66fd89
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_post_task.production.min.js
@@ -0,0 +1,13 @@
+/** @license React vundefined
+ * scheduler-unstable_post_task.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+'use strict';var a=window.performance,g=window.setTimeout,h=global.scheduler,k=a.now.bind(a),l=0,m=3;function p(c,d,b,f){l=k()+5;try{m=c;var e=f(!1);if("function"===typeof e){var n=new TaskController,r={priority:d,signal:n.signal};b._controller=n;h.postTask(p.bind(null,c,d,b,e),r).catch(q)}}catch(t){g(function(){throw t;})}finally{m=3}}function q(){}exports.unstable_IdlePriority=5;exports.unstable_ImmediatePriority=1;exports.unstable_LowPriority=4;exports.unstable_NormalPriority=3;
+exports.unstable_Profiling=null;exports.unstable_UserBlockingPriority=2;exports.unstable_cancelCallback=function(c){c._controller.abort()};exports.unstable_continueExecution=function(){};exports.unstable_forceFrameRate=function(){};exports.unstable_getCurrentPriorityLevel=function(){return m};exports.unstable_getFirstCallbackNode=function(){return null};exports.unstable_next=function(c){switch(m){case 1:case 2:case 3:var d=3;break;default:d=m}var b=m;m=d;try{return c()}finally{m=b}};
+exports.unstable_now=k;exports.unstable_pauseExecution=function(){};exports.unstable_requestPaint=function(){};exports.unstable_runWithPriority=function(c,d){var b=m;m=c;try{return d()}finally{m=b}};
+exports.unstable_scheduleCallback=function(c,d,b){switch(c){case 1:case 2:var f="user-blocking";break;case 4:case 3:f="user-visible";break;case 5:f="background";break;default:f="user-visible"}var e=new TaskController;b={priority:f,delay:"object"===typeof b&&null!==b?b.delay:0,signal:e.signal};e={_controller:e};h.postTask(p.bind(null,c,f,e,d),b).catch(q);return e};exports.unstable_shouldYield=function(){return k()>=l};
+exports.unstable_wrapCallback=function(c){var d=m;return function(){var b=m;m=d;try{return c()}finally{m=b}}};
diff --git a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler.development.js b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler.development.js
new file mode 100644
index 0000000000000..8d928368e853d
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler.development.js
@@ -0,0 +1,609 @@
+/** @license React vundefined
+ * scheduler.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+var enableSchedulerDebugging = false;
+var enableProfiling = false;
+
+function push(heap, node) {
+  var index = heap.length;
+  heap.push(node);
+  siftUp(heap, node, index);
+}
+function peek(heap) {
+  var first = heap[0];
+  return first === undefined ? null : first;
+}
+function pop(heap) {
+  var first = heap[0];
+
+  if (first !== undefined) {
+    var last = heap.pop();
+
+    if (last !== first) {
+      heap[0] = last;
+      siftDown(heap, last, 0);
+    }
+
+    return first;
+  } else {
+    return null;
+  }
+}
+
+function siftUp(heap, node, i) {
+  var index = i;
+
+  while (true) {
+    var parentIndex = index - 1 >>> 1;
+    var parent = heap[parentIndex];
+
+    if (parent !== undefined && compare(parent, node) > 0) {
+      // The parent is larger. Swap positions.
+      heap[parentIndex] = node;
+      heap[index] = parent;
+      index = parentIndex;
+    } else {
+      // The parent is smaller. Exit.
+      return;
+    }
+  }
+}
+
+function siftDown(heap, node, i) {
+  var index = i;
+  var length = heap.length;
+
+  while (index < length) {
+    var leftIndex = (index + 1) * 2 - 1;
+    var left = heap[leftIndex];
+    var rightIndex = leftIndex + 1;
+    var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those.
+
+    if (left !== undefined && compare(left, node) < 0) {
+      if (right !== undefined && compare(right, left) < 0) {
+        heap[index] = right;
+        heap[rightIndex] = node;
+        index = rightIndex;
+      } else {
+        heap[index] = left;
+        heap[leftIndex] = node;
+        index = leftIndex;
+      }
+    } else if (right !== undefined && compare(right, node) < 0) {
+      heap[index] = right;
+      heap[rightIndex] = node;
+      index = rightIndex;
+    } else {
+      // Neither child is smaller. Exit.
+      return;
+    }
+  }
+}
+
+function compare(a, b) {
+  // Compare sort index first, then task id.
+  var diff = a.sortIndex - b.sortIndex;
+  return diff !== 0 ? diff : a.id - b.id;
+}
+
+// TODO: Use symbols?
+var ImmediatePriority = 1;
+var UserBlockingPriority = 2;
+var NormalPriority = 3;
+var LowPriority = 4;
+var IdlePriority = 5;
+
+function markTaskErrored(task, ms) {
+}
+
+/* eslint-disable no-var */
+
+var hasPerformanceNow = typeof performance === 'object' && typeof performance.now === 'function';
+
+if (hasPerformanceNow) {
+  var localPerformance = performance;
+
+  exports.unstable_now = function () {
+    return localPerformance.now();
+  };
+} else {
+  var localDate = Date;
+  var initialTime = localDate.now();
+
+  exports.unstable_now = function () {
+    return localDate.now() - initialTime;
+  };
+} // Max 31 bit integer. The max integer size in V8 for 32-bit systems.
+// Math.pow(2, 30) - 1
+// 0b111111111111111111111111111111
+
+
+var maxSigned31BitInt = 1073741823; // Times out immediately
+
+var IMMEDIATE_PRIORITY_TIMEOUT = -1; // Eventually times out
+
+var USER_BLOCKING_PRIORITY_TIMEOUT = 250;
+var NORMAL_PRIORITY_TIMEOUT = 5000;
+var LOW_PRIORITY_TIMEOUT = 10000; // Never times out
+
+var IDLE_PRIORITY_TIMEOUT = maxSigned31BitInt; // Tasks are stored on a min heap
+
+var taskQueue = [];
+var timerQueue = []; // Incrementing id counter. Used to maintain insertion order.
+
+var taskIdCounter = 1; // Pausing the scheduler is useful for debugging.
+var currentTask = null;
+var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrancy.
+
+var isPerformingWork = false;
+var isHostCallbackScheduled = false;
+var isHostTimeoutScheduled = false; // Capture local references to native APIs, in case a polyfill overrides them.
+
+var localSetTimeout = typeof setTimeout === 'function' ? setTimeout : null;
+var localClearTimeout = typeof clearTimeout === 'function' ? clearTimeout : null;
+var localSetImmediate = typeof setImmediate !== 'undefined' ? setImmediate : null; // IE and Node.js + jsdom
+
+function advanceTimers(currentTime) {
+  // Check for tasks that are no longer delayed and add them to the queue.
+  var timer = peek(timerQueue);
+
+  while (timer !== null) {
+    if (timer.callback === null) {
+      // Timer was cancelled.
+      pop(timerQueue);
+    } else if (timer.startTime <= currentTime) {
+      // Timer fired. Transfer to the task queue.
+      pop(timerQueue);
+      timer.sortIndex = timer.expirationTime;
+      push(taskQueue, timer);
+    } else {
+      // Remaining timers are pending.
+      return;
+    }
+
+    timer = peek(timerQueue);
+  }
+}
+
+function handleTimeout(currentTime) {
+  isHostTimeoutScheduled = false;
+  advanceTimers(currentTime);
+
+  if (!isHostCallbackScheduled) {
+    if (peek(taskQueue) !== null) {
+      isHostCallbackScheduled = true;
+      requestHostCallback(flushWork);
+    } else {
+      var firstTimer = peek(timerQueue);
+
+      if (firstTimer !== null) {
+        requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
+      }
+    }
+  }
+}
+
+function flushWork(hasTimeRemaining, initialTime) {
+
+
+  isHostCallbackScheduled = false;
+
+  if (isHostTimeoutScheduled) {
+    // We scheduled a timeout but it's no longer needed. Cancel it.
+    isHostTimeoutScheduled = false;
+    cancelHostTimeout();
+  }
+
+  isPerformingWork = true;
+  var previousPriorityLevel = currentPriorityLevel;
+
+  try {
+    if (enableProfiling) {
+      try {
+        return workLoop(hasTimeRemaining, initialTime);
+      } catch (error) {
+        if (currentTask !== null) {
+          var currentTime = exports.unstable_now();
+          markTaskErrored(currentTask, currentTime);
+          currentTask.isQueued = false;
+        }
+
+        throw error;
+      }
+    } else {
+      // No catch in prod code path.
+      return workLoop(hasTimeRemaining, initialTime);
+    }
+  } finally {
+    currentTask = null;
+    currentPriorityLevel = previousPriorityLevel;
+    isPerformingWork = false;
+  }
+}
+
+function workLoop(hasTimeRemaining, initialTime) {
+  var currentTime = initialTime;
+  advanceTimers(currentTime);
+  currentTask = peek(taskQueue);
+
+  while (currentTask !== null && !(enableSchedulerDebugging )) {
+    if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost())) {
+      // This currentTask hasn't expired, and we've reached the deadline.
+      break;
+    }
+
+    var callback = currentTask.callback;
+
+    if (typeof callback === 'function') {
+      currentTask.callback = null;
+      currentPriorityLevel = currentTask.priorityLevel;
+      var didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
+
+      var continuationCallback = callback(didUserCallbackTimeout);
+      currentTime = exports.unstable_now();
+
+      if (typeof continuationCallback === 'function') {
+        currentTask.callback = continuationCallback;
+      } else {
+
+        if (currentTask === peek(taskQueue)) {
+          pop(taskQueue);
+        }
+      }
+
+      advanceTimers(currentTime);
+    } else {
+      pop(taskQueue);
+    }
+
+    currentTask = peek(taskQueue);
+  } // Return whether there's additional work
+
+
+  if (currentTask !== null) {
+    return true;
+  } else {
+    var firstTimer = peek(timerQueue);
+
+    if (firstTimer !== null) {
+      requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
+    }
+
+    return false;
+  }
+}
+
+function unstable_runWithPriority(priorityLevel, eventHandler) {
+  switch (priorityLevel) {
+    case ImmediatePriority:
+    case UserBlockingPriority:
+    case NormalPriority:
+    case LowPriority:
+    case IdlePriority:
+      break;
+
+    default:
+      priorityLevel = NormalPriority;
+  }
+
+  var previousPriorityLevel = currentPriorityLevel;
+  currentPriorityLevel = priorityLevel;
+
+  try {
+    return eventHandler();
+  } finally {
+    currentPriorityLevel = previousPriorityLevel;
+  }
+}
+
+function unstable_next(eventHandler) {
+  var priorityLevel;
+
+  switch (currentPriorityLevel) {
+    case ImmediatePriority:
+    case UserBlockingPriority:
+    case NormalPriority:
+      // Shift down to normal priority
+      priorityLevel = NormalPriority;
+      break;
+
+    default:
+      // Anything lower than normal priority should remain at the current level.
+      priorityLevel = currentPriorityLevel;
+      break;
+  }
+
+  var previousPriorityLevel = currentPriorityLevel;
+  currentPriorityLevel = priorityLevel;
+
+  try {
+    return eventHandler();
+  } finally {
+    currentPriorityLevel = previousPriorityLevel;
+  }
+}
+
+function unstable_wrapCallback(callback) {
+  var parentPriorityLevel = currentPriorityLevel;
+  return function () {
+    // This is a fork of runWithPriority, inlined for performance.
+    var previousPriorityLevel = currentPriorityLevel;
+    currentPriorityLevel = parentPriorityLevel;
+
+    try {
+      return callback.apply(this, arguments);
+    } finally {
+      currentPriorityLevel = previousPriorityLevel;
+    }
+  };
+}
+
+function unstable_scheduleCallback(priorityLevel, callback, options) {
+  var currentTime = exports.unstable_now();
+  var startTime;
+
+  if (typeof options === 'object' && options !== null) {
+    var delay = options.delay;
+
+    if (typeof delay === 'number' && delay > 0) {
+      startTime = currentTime + delay;
+    } else {
+      startTime = currentTime;
+    }
+  } else {
+    startTime = currentTime;
+  }
+
+  var timeout;
+
+  switch (priorityLevel) {
+    case ImmediatePriority:
+      timeout = IMMEDIATE_PRIORITY_TIMEOUT;
+      break;
+
+    case UserBlockingPriority:
+      timeout = USER_BLOCKING_PRIORITY_TIMEOUT;
+      break;
+
+    case IdlePriority:
+      timeout = IDLE_PRIORITY_TIMEOUT;
+      break;
+
+    case LowPriority:
+      timeout = LOW_PRIORITY_TIMEOUT;
+      break;
+
+    case NormalPriority:
+    default:
+      timeout = NORMAL_PRIORITY_TIMEOUT;
+      break;
+  }
+
+  var expirationTime = startTime + timeout;
+  var newTask = {
+    id: taskIdCounter++,
+    callback: callback,
+    priorityLevel: priorityLevel,
+    startTime: startTime,
+    expirationTime: expirationTime,
+    sortIndex: -1
+  };
+
+  if (startTime > currentTime) {
+    // This is a delayed task.
+    newTask.sortIndex = startTime;
+    push(timerQueue, newTask);
+
+    if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
+      // All tasks are delayed, and this is the task with the earliest delay.
+      if (isHostTimeoutScheduled) {
+        // Cancel an existing timeout.
+        cancelHostTimeout();
+      } else {
+        isHostTimeoutScheduled = true;
+      } // Schedule a timeout.
+
+
+      requestHostTimeout(handleTimeout, startTime - currentTime);
+    }
+  } else {
+    newTask.sortIndex = expirationTime;
+    push(taskQueue, newTask);
+    // wait until the next time we yield.
+
+
+    if (!isHostCallbackScheduled && !isPerformingWork) {
+      isHostCallbackScheduled = true;
+      requestHostCallback(flushWork);
+    }
+  }
+
+  return newTask;
+}
+
+function unstable_pauseExecution() {
+}
+
+function unstable_continueExecution() {
+
+  if (!isHostCallbackScheduled && !isPerformingWork) {
+    isHostCallbackScheduled = true;
+    requestHostCallback(flushWork);
+  }
+}
+
+function unstable_getFirstCallbackNode() {
+  return peek(taskQueue);
+}
+
+function unstable_cancelCallback(task) {
+  // remove from the queue because you can't remove arbitrary nodes from an
+  // array based heap, only the first one.)
+
+
+  task.callback = null;
+}
+
+function unstable_getCurrentPriorityLevel() {
+  return currentPriorityLevel;
+}
+
+var isMessageLoopRunning = false;
+var scheduledHostCallback = null;
+var taskTimeoutID = -1; // Scheduler periodically yields in case there is other work on the main
+// thread, like user events. By default, it yields multiple times per frame.
+// It does not attempt to align with frame boundaries, since most tasks don't
+// need to be frame aligned; for those that do, use requestAnimationFrame.
+
+var yieldInterval = 5;
+var deadline = 0; // TODO: Make this configurable
+
+function shouldYieldToHost() {
+  {
+    // `isInputPending` is not available. Since we have no way of knowing if
+    // there's pending input, always yield at the end of the frame.
+    return exports.unstable_now() >= deadline;
+  }
+}
+
+function requestPaint() {
+
+}
+
+function forceFrameRate(fps) {
+  if (fps < 0 || fps > 125) {
+    // Using console['error'] to evade Babel and ESLint
+    console['error']('forceFrameRate takes a positive int between 0 and 125, ' + 'forcing frame rates higher than 125 fps is not supported');
+    return;
+  }
+
+  if (fps > 0) {
+    yieldInterval = Math.floor(1000 / fps);
+  } else {
+    // reset the framerate
+    yieldInterval = 5;
+  }
+}
+
+var performWorkUntilDeadline = function () {
+  if (scheduledHostCallback !== null) {
+    var currentTime = exports.unstable_now(); // Yield after `yieldInterval` ms, regardless of where we are in the vsync
+    // cycle. This means there's always time remaining at the beginning of
+    // the message event.
+
+    deadline = currentTime + yieldInterval;
+    var hasTimeRemaining = true; // If a scheduler task throws, exit the current browser task so the
+    // error can be observed.
+    //
+    // Intentionally not using a try-catch, since that makes some debugging
+    // techniques harder. Instead, if `scheduledHostCallback` errors, then
+    // `hasMoreWork` will remain true, and we'll continue the work loop.
+
+    var hasMoreWork = true;
+
+    try {
+      hasMoreWork = scheduledHostCallback(hasTimeRemaining, currentTime);
+    } finally {
+      if (hasMoreWork) {
+        // If there's more work, schedule the next message event at the end
+        // of the preceding one.
+        schedulePerformWorkUntilDeadline();
+      } else {
+        isMessageLoopRunning = false;
+        scheduledHostCallback = null;
+      }
+    }
+  } else {
+    isMessageLoopRunning = false;
+  } // Yielding to the browser will give it a chance to paint, so we can
+};
+
+var schedulePerformWorkUntilDeadline;
+
+if (typeof localSetImmediate === 'function') {
+  // Node.js and old IE.
+  // There's a few reasons for why we prefer setImmediate.
+  //
+  // Unlike MessageChannel, it doesn't prevent a Node.js process from exiting.
+  // (Even though this is a DOM fork of the Scheduler, you could get here
+  // with a mix of Node.js 15+, which has a MessageChannel, and jsdom.)
+  // https://github.com/facebook/react/issues/20756
+  //
+  // But also, it runs earlier which is the semantic we want.
+  // If other browsers ever implement it, it's better to use it.
+  // Although both of these would be inferior to native scheduling.
+  schedulePerformWorkUntilDeadline = function () {
+    localSetImmediate(performWorkUntilDeadline);
+  };
+} else if (typeof MessageChannel !== 'undefined') {
+  // DOM and Worker environments.
+  // We prefer MessageChannel because of the 4ms setTimeout clamping.
+  var channel = new MessageChannel();
+  var port = channel.port2;
+  channel.port1.onmessage = performWorkUntilDeadline;
+
+  schedulePerformWorkUntilDeadline = function () {
+    port.postMessage(null);
+  };
+} else {
+  // We should only fallback here in non-browser environments.
+  schedulePerformWorkUntilDeadline = function () {
+    localSetTimeout(performWorkUntilDeadline, 0);
+  };
+}
+
+function requestHostCallback(callback) {
+  scheduledHostCallback = callback;
+
+  if (!isMessageLoopRunning) {
+    isMessageLoopRunning = true;
+    schedulePerformWorkUntilDeadline();
+  }
+}
+
+function requestHostTimeout(callback, ms) {
+  taskTimeoutID = localSetTimeout(function () {
+    callback(exports.unstable_now());
+  }, ms);
+}
+
+function cancelHostTimeout() {
+  localClearTimeout(taskTimeoutID);
+  taskTimeoutID = -1;
+}
+
+var unstable_requestPaint = requestPaint;
+var unstable_Profiling =  null;
+
+exports.unstable_IdlePriority = IdlePriority;
+exports.unstable_ImmediatePriority = ImmediatePriority;
+exports.unstable_LowPriority = LowPriority;
+exports.unstable_NormalPriority = NormalPriority;
+exports.unstable_Profiling = unstable_Profiling;
+exports.unstable_UserBlockingPriority = UserBlockingPriority;
+exports.unstable_cancelCallback = unstable_cancelCallback;
+exports.unstable_continueExecution = unstable_continueExecution;
+exports.unstable_forceFrameRate = forceFrameRate;
+exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
+exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
+exports.unstable_next = unstable_next;
+exports.unstable_pauseExecution = unstable_pauseExecution;
+exports.unstable_requestPaint = unstable_requestPaint;
+exports.unstable_runWithPriority = unstable_runWithPriority;
+exports.unstable_scheduleCallback = unstable_scheduleCallback;
+exports.unstable_shouldYield = shouldYieldToHost;
+exports.unstable_wrapCallback = unstable_wrapCallback;
+  })();
+}
diff --git a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler.production.min.js b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler.production.min.js
new file mode 100644
index 0000000000000..b66f89ca7f943
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler.production.min.js
@@ -0,0 +1,18 @@
+/** @license React vundefined
+ * scheduler.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+'use strict';function f(a,b){var c=a.length;a.push(b);a:for(;;){var d=c-1>>>1,e=a[d];if(void 0!==e&&0<g(e,b))a[d]=b,a[c]=e,c=d;else break a}}function h(a){a=a[0];return void 0===a?null:a}function k(a){var b=a[0];if(void 0!==b){var c=a.pop();if(c!==b){a[0]=c;a:for(var d=0,e=a.length;d<e;){var m=2*(d+1)-1,n=a[m],r=m+1,q=a[r];if(void 0!==n&&0>g(n,c))void 0!==q&&0>g(q,n)?(a[d]=q,a[r]=c,d=r):(a[d]=n,a[m]=c,d=m);else if(void 0!==q&&0>g(q,c))a[d]=q,a[r]=c,d=r;else break a}}return b}return null}
+function g(a,b){var c=a.sortIndex-b.sortIndex;return 0!==c?c:a.id-b.id}if("object"===typeof performance&&"function"===typeof performance.now){var l=performance;exports.unstable_now=function(){return l.now()}}else{var p=Date,t=p.now();exports.unstable_now=function(){return p.now()-t}}var u=[],v=[],w=1,x=null,y=3,z=!1,A=!1,B=!1,C="function"===typeof setTimeout?setTimeout:null,D="function"===typeof clearTimeout?clearTimeout:null,E="undefined"!==typeof setImmediate?setImmediate:null;
+function F(a){for(var b=h(v);null!==b;){if(null===b.callback)k(v);else if(b.startTime<=a)k(v),b.sortIndex=b.expirationTime,f(u,b);else break;b=h(v)}}function G(a){B=!1;F(a);if(!A)if(null!==h(u))A=!0,H(I);else{var b=h(v);null!==b&&J(G,b.startTime-a)}}
+function I(a,b){A=!1;B&&(B=!1,D(K),K=-1);z=!0;var c=y;try{F(b);for(x=h(u);null!==x&&(!(x.expirationTime>b)||a&&!L());){var d=x.callback;if("function"===typeof d){x.callback=null;y=x.priorityLevel;var e=d(x.expirationTime<=b);b=exports.unstable_now();"function"===typeof e?x.callback=e:x===h(u)&&k(u);F(b)}else k(u);x=h(u)}if(null!==x)var m=!0;else{var n=h(v);null!==n&&J(G,n.startTime-b);m=!1}return m}finally{x=null,y=c,z=!1}}var M=!1,N=null,K=-1,O=5,P=0;
+function L(){return exports.unstable_now()>=P}function Q(){if(null!==N){var a=exports.unstable_now();P=a+O;var b=!0;try{b=N(!0,a)}finally{b?R():(M=!1,N=null)}}else M=!1}var R;if("function"===typeof E)R=function(){E(Q)};else if("undefined"!==typeof MessageChannel){var S=new MessageChannel,T=S.port2;S.port1.onmessage=Q;R=function(){T.postMessage(null)}}else R=function(){C(Q,0)};function H(a){N=a;M||(M=!0,R())}function J(a,b){K=C(function(){a(exports.unstable_now())},b)}
+exports.unstable_IdlePriority=5;exports.unstable_ImmediatePriority=1;exports.unstable_LowPriority=4;exports.unstable_NormalPriority=3;exports.unstable_Profiling=null;exports.unstable_UserBlockingPriority=2;exports.unstable_cancelCallback=function(a){a.callback=null};exports.unstable_continueExecution=function(){A||z||(A=!0,H(I))};
+exports.unstable_forceFrameRate=function(a){0>a||125<a?console.error("forceFrameRate takes a positive int between 0 and 125, forcing frame rates higher than 125 fps is not supported"):O=0<a?Math.floor(1E3/a):5};exports.unstable_getCurrentPriorityLevel=function(){return y};exports.unstable_getFirstCallbackNode=function(){return h(u)};exports.unstable_next=function(a){switch(y){case 1:case 2:case 3:var b=3;break;default:b=y}var c=y;y=b;try{return a()}finally{y=c}};exports.unstable_pauseExecution=function(){};
+exports.unstable_requestPaint=function(){};exports.unstable_runWithPriority=function(a,b){switch(a){case 1:case 2:case 3:case 4:case 5:break;default:a=3}var c=y;y=a;try{return b()}finally{y=c}};
+exports.unstable_scheduleCallback=function(a,b,c){var d=exports.unstable_now();"object"===typeof c&&null!==c?(c=c.delay,c="number"===typeof c&&0<c?d+c:d):c=d;switch(a){case 1:var e=-1;break;case 2:e=250;break;case 5:e=1073741823;break;case 4:e=1E4;break;default:e=5E3}e=c+e;a={id:w++,callback:b,priorityLevel:a,startTime:c,expirationTime:e,sortIndex:-1};c>d?(a.sortIndex=c,f(v,a),null===h(u)&&a===h(v)&&(B?(D(K),K=-1):B=!0,J(G,c-d))):(a.sortIndex=e,f(u,a),A||z||(A=!0,H(I)));return a};
+exports.unstable_shouldYield=L;exports.unstable_wrapCallback=function(a){var b=y;return function(){var c=y;y=b;try{return a.apply(this,arguments)}finally{y=c}}};
diff --git a/fixtures/tests/schedulers/pr/scheduler/index.js b/fixtures/tests/schedulers/pr/scheduler/index.js
new file mode 100644
index 0000000000000..77770b0c219e2
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/index.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/scheduler.production.min.js');
+} else {
+  module.exports = require('./cjs/scheduler.development.js');
+}
diff --git a/fixtures/tests/schedulers/pr/scheduler/package.json b/fixtures/tests/schedulers/pr/scheduler/package.json
new file mode 100644
index 0000000000000..cea8e16c2e87e
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/package.json
@@ -0,0 +1,40 @@
+{
+  "name": "scheduler",
+  "version": "0.20.1",
+  "description": "Cooperative scheduler for the browser environment.",
+  "main": "index.js",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/facebook/react.git",
+    "directory": "packages/scheduler"
+  },
+  "license": "MIT",
+  "keywords": [
+    "react"
+  ],
+  "bugs": {
+    "url": "https://github.com/facebook/react/issues"
+  },
+  "homepage": "https://reactjs.org/",
+  "dependencies": {
+    "loose-envify": "^1.1.0",
+    "object-assign": "^4.1.1"
+  },
+  "files": [
+    "LICENSE",
+    "README.md",
+    "build-info.json",
+    "index.js",
+    "tracing.js",
+    "tracing-profiling.js",
+    "unstable_mock.js",
+    "unstable_post_task.js",
+    "cjs/",
+    "umd/"
+  ],
+  "browserify": {
+    "transform": [
+      "loose-envify"
+    ]
+  }
+}
diff --git a/fixtures/tests/schedulers/pr/scheduler/tracing-profiling.js b/fixtures/tests/schedulers/pr/scheduler/tracing-profiling.js
new file mode 100644
index 0000000000000..cb2d20c025226
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/tracing-profiling.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/scheduler-tracing.profiling.min.js');
+} else {
+  module.exports = require('./cjs/scheduler-tracing.development.js');
+}
diff --git a/fixtures/tests/schedulers/pr/scheduler/tracing.js b/fixtures/tests/schedulers/pr/scheduler/tracing.js
new file mode 100644
index 0000000000000..1e318bd901b5d
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/tracing.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/scheduler-tracing.production.min.js');
+} else {
+  module.exports = require('./cjs/scheduler-tracing.development.js');
+}
diff --git a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.development.js b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.development.js
new file mode 100644
index 0000000000000..a81bf8fe2f98d
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.development.js
@@ -0,0 +1,80 @@
+/**
+ * @license React
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+(function(global, factory) {
+  // eslint-disable-next-line no-unused-expressions
+  typeof exports === 'object' && typeof module !== 'undefined'
+    ? (module.exports = factory(require('react')))
+    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
+    ? define(['react'], factory) // eslint-disable-line no-undef
+    : (global.SchedulerTracing = factory(global));
+})(this, function(global) {
+  function unstable_clear() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_clear.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getCurrent() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getCurrent.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getThreadID() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getThreadID.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_subscribe() {
+    // eslint-disable-next-line max-len
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_subscribe.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_trace() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_trace.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_unsubscribe() {
+    // eslint-disable-next-line max-len
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_unsubscribe.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_wrap() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_wrap.apply(
+      this,
+      arguments
+    );
+  }
+
+  return Object.freeze({
+    unstable_clear: unstable_clear,
+    unstable_getCurrent: unstable_getCurrent,
+    unstable_getThreadID: unstable_getThreadID,
+    unstable_subscribe: unstable_subscribe,
+    unstable_trace: unstable_trace,
+    unstable_unsubscribe: unstable_unsubscribe,
+    unstable_wrap: unstable_wrap,
+  });
+});
diff --git a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.production.min.js b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.production.min.js
new file mode 100644
index 0000000000000..a81bf8fe2f98d
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.production.min.js
@@ -0,0 +1,80 @@
+/**
+ * @license React
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+(function(global, factory) {
+  // eslint-disable-next-line no-unused-expressions
+  typeof exports === 'object' && typeof module !== 'undefined'
+    ? (module.exports = factory(require('react')))
+    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
+    ? define(['react'], factory) // eslint-disable-line no-undef
+    : (global.SchedulerTracing = factory(global));
+})(this, function(global) {
+  function unstable_clear() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_clear.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getCurrent() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getCurrent.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getThreadID() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getThreadID.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_subscribe() {
+    // eslint-disable-next-line max-len
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_subscribe.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_trace() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_trace.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_unsubscribe() {
+    // eslint-disable-next-line max-len
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_unsubscribe.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_wrap() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_wrap.apply(
+      this,
+      arguments
+    );
+  }
+
+  return Object.freeze({
+    unstable_clear: unstable_clear,
+    unstable_getCurrent: unstable_getCurrent,
+    unstable_getThreadID: unstable_getThreadID,
+    unstable_subscribe: unstable_subscribe,
+    unstable_trace: unstable_trace,
+    unstable_unsubscribe: unstable_unsubscribe,
+    unstable_wrap: unstable_wrap,
+  });
+});
diff --git a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.profiling.min.js b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.profiling.min.js
new file mode 100644
index 0000000000000..a81bf8fe2f98d
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.profiling.min.js
@@ -0,0 +1,80 @@
+/**
+ * @license React
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+(function(global, factory) {
+  // eslint-disable-next-line no-unused-expressions
+  typeof exports === 'object' && typeof module !== 'undefined'
+    ? (module.exports = factory(require('react')))
+    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
+    ? define(['react'], factory) // eslint-disable-line no-undef
+    : (global.SchedulerTracing = factory(global));
+})(this, function(global) {
+  function unstable_clear() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_clear.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getCurrent() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getCurrent.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getThreadID() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getThreadID.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_subscribe() {
+    // eslint-disable-next-line max-len
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_subscribe.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_trace() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_trace.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_unsubscribe() {
+    // eslint-disable-next-line max-len
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_unsubscribe.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_wrap() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_wrap.apply(
+      this,
+      arguments
+    );
+  }
+
+  return Object.freeze({
+    unstable_clear: unstable_clear,
+    unstable_getCurrent: unstable_getCurrent,
+    unstable_getThreadID: unstable_getThreadID,
+    unstable_subscribe: unstable_subscribe,
+    unstable_trace: unstable_trace,
+    unstable_unsubscribe: unstable_unsubscribe,
+    unstable_wrap: unstable_wrap,
+  });
+});
diff --git a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-unstable_mock.development.js b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-unstable_mock.development.js
new file mode 100644
index 0000000000000..5a6aace3bcb3c
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-unstable_mock.development.js
@@ -0,0 +1,693 @@
+/** @license React vundefined
+ * scheduler-unstable_mock.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+  typeof define === 'function' && define.amd ? define(['exports'], factory) :
+  (global = global || self, factory(global.SchedulerMock = {}));
+}(this, (function (exports) { 'use strict';
+
+  var enableSchedulerDebugging = false;
+  var enableProfiling = false;
+
+  function push(heap, node) {
+    var index = heap.length;
+    heap.push(node);
+    siftUp(heap, node, index);
+  }
+  function peek(heap) {
+    var first = heap[0];
+    return first === undefined ? null : first;
+  }
+  function pop(heap) {
+    var first = heap[0];
+
+    if (first !== undefined) {
+      var last = heap.pop();
+
+      if (last !== first) {
+        heap[0] = last;
+        siftDown(heap, last, 0);
+      }
+
+      return first;
+    } else {
+      return null;
+    }
+  }
+
+  function siftUp(heap, node, i) {
+    var index = i;
+
+    while (true) {
+      var parentIndex = index - 1 >>> 1;
+      var parent = heap[parentIndex];
+
+      if (parent !== undefined && compare(parent, node) > 0) {
+        // The parent is larger. Swap positions.
+        heap[parentIndex] = node;
+        heap[index] = parent;
+        index = parentIndex;
+      } else {
+        // The parent is smaller. Exit.
+        return;
+      }
+    }
+  }
+
+  function siftDown(heap, node, i) {
+    var index = i;
+    var length = heap.length;
+
+    while (index < length) {
+      var leftIndex = (index + 1) * 2 - 1;
+      var left = heap[leftIndex];
+      var rightIndex = leftIndex + 1;
+      var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those.
+
+      if (left !== undefined && compare(left, node) < 0) {
+        if (right !== undefined && compare(right, left) < 0) {
+          heap[index] = right;
+          heap[rightIndex] = node;
+          index = rightIndex;
+        } else {
+          heap[index] = left;
+          heap[leftIndex] = node;
+          index = leftIndex;
+        }
+      } else if (right !== undefined && compare(right, node) < 0) {
+        heap[index] = right;
+        heap[rightIndex] = node;
+        index = rightIndex;
+      } else {
+        // Neither child is smaller. Exit.
+        return;
+      }
+    }
+  }
+
+  function compare(a, b) {
+    // Compare sort index first, then task id.
+    var diff = a.sortIndex - b.sortIndex;
+    return diff !== 0 ? diff : a.id - b.id;
+  }
+
+  // TODO: Use symbols?
+  var ImmediatePriority = 1;
+  var UserBlockingPriority = 2;
+  var NormalPriority = 3;
+  var LowPriority = 4;
+  var IdlePriority = 5;
+
+  function markTaskErrored(task, ms) {
+  }
+
+  /* eslint-disable no-var */
+  // Math.pow(2, 30) - 1
+  // 0b111111111111111111111111111111
+
+  var maxSigned31BitInt = 1073741823; // Times out immediately
+
+  var IMMEDIATE_PRIORITY_TIMEOUT = -1; // Eventually times out
+
+  var USER_BLOCKING_PRIORITY_TIMEOUT = 250;
+  var NORMAL_PRIORITY_TIMEOUT = 5000;
+  var LOW_PRIORITY_TIMEOUT = 10000; // Never times out
+
+  var IDLE_PRIORITY_TIMEOUT = maxSigned31BitInt; // Tasks are stored on a min heap
+
+  var taskQueue = [];
+  var timerQueue = []; // Incrementing id counter. Used to maintain insertion order.
+
+  var taskIdCounter = 1; // Pausing the scheduler is useful for debugging.
+  var currentTask = null;
+  var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrancy.
+
+  var isPerformingWork = false;
+  var isHostCallbackScheduled = false;
+  var isHostTimeoutScheduled = false;
+  var currentMockTime = 0;
+  var scheduledCallback = null;
+  var scheduledTimeout = null;
+  var timeoutTime = -1;
+  var yieldedValues = null;
+  var expectedNumberOfYields = -1;
+  var didStop = false;
+  var isFlushing = false;
+  var needsPaint = false;
+  var shouldYieldForPaint = false;
+
+  function advanceTimers(currentTime) {
+    // Check for tasks that are no longer delayed and add them to the queue.
+    var timer = peek(timerQueue);
+
+    while (timer !== null) {
+      if (timer.callback === null) {
+        // Timer was cancelled.
+        pop(timerQueue);
+      } else if (timer.startTime <= currentTime) {
+        // Timer fired. Transfer to the task queue.
+        pop(timerQueue);
+        timer.sortIndex = timer.expirationTime;
+        push(taskQueue, timer);
+      } else {
+        // Remaining timers are pending.
+        return;
+      }
+
+      timer = peek(timerQueue);
+    }
+  }
+
+  function handleTimeout(currentTime) {
+    isHostTimeoutScheduled = false;
+    advanceTimers(currentTime);
+
+    if (!isHostCallbackScheduled) {
+      if (peek(taskQueue) !== null) {
+        isHostCallbackScheduled = true;
+        requestHostCallback(flushWork);
+      } else {
+        var firstTimer = peek(timerQueue);
+
+        if (firstTimer !== null) {
+          requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
+        }
+      }
+    }
+  }
+
+  function flushWork(hasTimeRemaining, initialTime) {
+
+
+    isHostCallbackScheduled = false;
+
+    if (isHostTimeoutScheduled) {
+      // We scheduled a timeout but it's no longer needed. Cancel it.
+      isHostTimeoutScheduled = false;
+      cancelHostTimeout();
+    }
+
+    isPerformingWork = true;
+    var previousPriorityLevel = currentPriorityLevel;
+
+    try {
+      if (enableProfiling) {
+        try {
+          return workLoop(hasTimeRemaining, initialTime);
+        } catch (error) {
+          if (currentTask !== null) {
+            var currentTime = getCurrentTime();
+            markTaskErrored(currentTask, currentTime);
+            currentTask.isQueued = false;
+          }
+
+          throw error;
+        }
+      } else {
+        // No catch in prod code path.
+        return workLoop(hasTimeRemaining, initialTime);
+      }
+    } finally {
+      currentTask = null;
+      currentPriorityLevel = previousPriorityLevel;
+      isPerformingWork = false;
+    }
+  }
+
+  function workLoop(hasTimeRemaining, initialTime) {
+    var currentTime = initialTime;
+    advanceTimers(currentTime);
+    currentTask = peek(taskQueue);
+
+    while (currentTask !== null && !(enableSchedulerDebugging )) {
+      if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost())) {
+        // This currentTask hasn't expired, and we've reached the deadline.
+        break;
+      }
+
+      var callback = currentTask.callback;
+
+      if (typeof callback === 'function') {
+        currentTask.callback = null;
+        currentPriorityLevel = currentTask.priorityLevel;
+        var didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
+
+        var continuationCallback = callback(didUserCallbackTimeout);
+        currentTime = getCurrentTime();
+
+        if (typeof continuationCallback === 'function') {
+          currentTask.callback = continuationCallback;
+        } else {
+
+          if (currentTask === peek(taskQueue)) {
+            pop(taskQueue);
+          }
+        }
+
+        advanceTimers(currentTime);
+      } else {
+        pop(taskQueue);
+      }
+
+      currentTask = peek(taskQueue);
+    } // Return whether there's additional work
+
+
+    if (currentTask !== null) {
+      return true;
+    } else {
+      var firstTimer = peek(timerQueue);
+
+      if (firstTimer !== null) {
+        requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
+      }
+
+      return false;
+    }
+  }
+
+  function unstable_runWithPriority(priorityLevel, eventHandler) {
+    switch (priorityLevel) {
+      case ImmediatePriority:
+      case UserBlockingPriority:
+      case NormalPriority:
+      case LowPriority:
+      case IdlePriority:
+        break;
+
+      default:
+        priorityLevel = NormalPriority;
+    }
+
+    var previousPriorityLevel = currentPriorityLevel;
+    currentPriorityLevel = priorityLevel;
+
+    try {
+      return eventHandler();
+    } finally {
+      currentPriorityLevel = previousPriorityLevel;
+    }
+  }
+
+  function unstable_next(eventHandler) {
+    var priorityLevel;
+
+    switch (currentPriorityLevel) {
+      case ImmediatePriority:
+      case UserBlockingPriority:
+      case NormalPriority:
+        // Shift down to normal priority
+        priorityLevel = NormalPriority;
+        break;
+
+      default:
+        // Anything lower than normal priority should remain at the current level.
+        priorityLevel = currentPriorityLevel;
+        break;
+    }
+
+    var previousPriorityLevel = currentPriorityLevel;
+    currentPriorityLevel = priorityLevel;
+
+    try {
+      return eventHandler();
+    } finally {
+      currentPriorityLevel = previousPriorityLevel;
+    }
+  }
+
+  function unstable_wrapCallback(callback) {
+    var parentPriorityLevel = currentPriorityLevel;
+    return function () {
+      // This is a fork of runWithPriority, inlined for performance.
+      var previousPriorityLevel = currentPriorityLevel;
+      currentPriorityLevel = parentPriorityLevel;
+
+      try {
+        return callback.apply(this, arguments);
+      } finally {
+        currentPriorityLevel = previousPriorityLevel;
+      }
+    };
+  }
+
+  function unstable_scheduleCallback(priorityLevel, callback, options) {
+    var currentTime = getCurrentTime();
+    var startTime;
+
+    if (typeof options === 'object' && options !== null) {
+      var delay = options.delay;
+
+      if (typeof delay === 'number' && delay > 0) {
+        startTime = currentTime + delay;
+      } else {
+        startTime = currentTime;
+      }
+    } else {
+      startTime = currentTime;
+    }
+
+    var timeout;
+
+    switch (priorityLevel) {
+      case ImmediatePriority:
+        timeout = IMMEDIATE_PRIORITY_TIMEOUT;
+        break;
+
+      case UserBlockingPriority:
+        timeout = USER_BLOCKING_PRIORITY_TIMEOUT;
+        break;
+
+      case IdlePriority:
+        timeout = IDLE_PRIORITY_TIMEOUT;
+        break;
+
+      case LowPriority:
+        timeout = LOW_PRIORITY_TIMEOUT;
+        break;
+
+      case NormalPriority:
+      default:
+        timeout = NORMAL_PRIORITY_TIMEOUT;
+        break;
+    }
+
+    var expirationTime = startTime + timeout;
+    var newTask = {
+      id: taskIdCounter++,
+      callback: callback,
+      priorityLevel: priorityLevel,
+      startTime: startTime,
+      expirationTime: expirationTime,
+      sortIndex: -1
+    };
+
+    if (startTime > currentTime) {
+      // This is a delayed task.
+      newTask.sortIndex = startTime;
+      push(timerQueue, newTask);
+
+      if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
+        // All tasks are delayed, and this is the task with the earliest delay.
+        if (isHostTimeoutScheduled) {
+          // Cancel an existing timeout.
+          cancelHostTimeout();
+        } else {
+          isHostTimeoutScheduled = true;
+        } // Schedule a timeout.
+
+
+        requestHostTimeout(handleTimeout, startTime - currentTime);
+      }
+    } else {
+      newTask.sortIndex = expirationTime;
+      push(taskQueue, newTask);
+      // wait until the next time we yield.
+
+
+      if (!isHostCallbackScheduled && !isPerformingWork) {
+        isHostCallbackScheduled = true;
+        requestHostCallback(flushWork);
+      }
+    }
+
+    return newTask;
+  }
+
+  function unstable_pauseExecution() {
+  }
+
+  function unstable_continueExecution() {
+
+    if (!isHostCallbackScheduled && !isPerformingWork) {
+      isHostCallbackScheduled = true;
+      requestHostCallback(flushWork);
+    }
+  }
+
+  function unstable_getFirstCallbackNode() {
+    return peek(taskQueue);
+  }
+
+  function unstable_cancelCallback(task) {
+    // remove from the queue because you can't remove arbitrary nodes from an
+    // array based heap, only the first one.)
+
+
+    task.callback = null;
+  }
+
+  function unstable_getCurrentPriorityLevel() {
+    return currentPriorityLevel;
+  }
+
+  function requestHostCallback(callback) {
+    scheduledCallback = callback;
+  }
+
+  function requestHostTimeout(callback, ms) {
+    scheduledTimeout = callback;
+    timeoutTime = currentMockTime + ms;
+  }
+
+  function cancelHostTimeout() {
+    scheduledTimeout = null;
+    timeoutTime = -1;
+  }
+
+  function shouldYieldToHost() {
+    if (expectedNumberOfYields !== -1 && yieldedValues !== null && yieldedValues.length >= expectedNumberOfYields || shouldYieldForPaint && needsPaint) {
+      // We yielded at least as many values as expected. Stop flushing.
+      didStop = true;
+      return true;
+    }
+
+    return false;
+  }
+
+  function getCurrentTime() {
+    return currentMockTime;
+  }
+
+  function forceFrameRate() {// No-op
+  }
+
+  function reset() {
+    if (isFlushing) {
+      throw new Error('Cannot reset while already flushing work.');
+    }
+
+    currentMockTime = 0;
+    scheduledCallback = null;
+    scheduledTimeout = null;
+    timeoutTime = -1;
+    yieldedValues = null;
+    expectedNumberOfYields = -1;
+    didStop = false;
+    isFlushing = false;
+    needsPaint = false;
+  } // Should only be used via an assertion helper that inspects the yielded values.
+
+
+  function unstable_flushNumberOfYields(count) {
+    if (isFlushing) {
+      throw new Error('Already flushing work.');
+    }
+
+    if (scheduledCallback !== null) {
+      var cb = scheduledCallback;
+      expectedNumberOfYields = count;
+      isFlushing = true;
+
+      try {
+        var hasMoreWork = true;
+
+        do {
+          hasMoreWork = cb(true, currentMockTime);
+        } while (hasMoreWork && !didStop);
+
+        if (!hasMoreWork) {
+          scheduledCallback = null;
+        }
+      } finally {
+        expectedNumberOfYields = -1;
+        didStop = false;
+        isFlushing = false;
+      }
+    }
+  }
+
+  function unstable_flushUntilNextPaint() {
+    if (isFlushing) {
+      throw new Error('Already flushing work.');
+    }
+
+    if (scheduledCallback !== null) {
+      var cb = scheduledCallback;
+      shouldYieldForPaint = true;
+      needsPaint = false;
+      isFlushing = true;
+
+      try {
+        var hasMoreWork = true;
+
+        do {
+          hasMoreWork = cb(true, currentMockTime);
+        } while (hasMoreWork && !didStop);
+
+        if (!hasMoreWork) {
+          scheduledCallback = null;
+        }
+      } finally {
+        shouldYieldForPaint = false;
+        didStop = false;
+        isFlushing = false;
+      }
+    }
+  }
+
+  function unstable_flushExpired() {
+    if (isFlushing) {
+      throw new Error('Already flushing work.');
+    }
+
+    if (scheduledCallback !== null) {
+      isFlushing = true;
+
+      try {
+        var hasMoreWork = scheduledCallback(false, currentMockTime);
+
+        if (!hasMoreWork) {
+          scheduledCallback = null;
+        }
+      } finally {
+        isFlushing = false;
+      }
+    }
+  }
+
+  function unstable_flushAllWithoutAsserting() {
+    // Returns false if no work was flushed.
+    if (isFlushing) {
+      throw new Error('Already flushing work.');
+    }
+
+    if (scheduledCallback !== null) {
+      var cb = scheduledCallback;
+      isFlushing = true;
+
+      try {
+        var hasMoreWork = true;
+
+        do {
+          hasMoreWork = cb(true, currentMockTime);
+        } while (hasMoreWork);
+
+        if (!hasMoreWork) {
+          scheduledCallback = null;
+        }
+
+        return true;
+      } finally {
+        isFlushing = false;
+      }
+    } else {
+      return false;
+    }
+  }
+
+  function unstable_clearYields() {
+    if (yieldedValues === null) {
+      return [];
+    }
+
+    var values = yieldedValues;
+    yieldedValues = null;
+    return values;
+  }
+
+  function unstable_flushAll() {
+    if (yieldedValues !== null) {
+      throw new Error('Log is not empty. Assert on the log of yielded values before ' + 'flushing additional work.');
+    }
+
+    unstable_flushAllWithoutAsserting();
+
+    if (yieldedValues !== null) {
+      throw new Error('While flushing work, something yielded a value. Use an ' + 'assertion helper to assert on the log of yielded values, e.g. ' + 'expect(Scheduler).toFlushAndYield([...])');
+    }
+  }
+
+  function unstable_yieldValue(value) {
+    // eslint-disable-next-line react-internal/no-production-logging
+    if (console.log.name === 'disabledLog') {
+      // If console.log has been patched, we assume we're in render
+      // replaying and we ignore any values yielding in the second pass.
+      return;
+    }
+
+    if (yieldedValues === null) {
+      yieldedValues = [value];
+    } else {
+      yieldedValues.push(value);
+    }
+  }
+
+  function unstable_advanceTime(ms) {
+    // eslint-disable-next-line react-internal/no-production-logging
+    if (console.log.name === 'disabledLog') {
+      // If console.log has been patched, we assume we're in render
+      // replaying and we ignore any time advancing in the second pass.
+      return;
+    }
+
+    currentMockTime += ms;
+
+    if (scheduledTimeout !== null && timeoutTime <= currentMockTime) {
+      scheduledTimeout(currentMockTime);
+      timeoutTime = -1;
+      scheduledTimeout = null;
+    }
+  }
+
+  function requestPaint() {
+    needsPaint = true;
+  }
+  var unstable_Profiling =  null;
+
+  exports.reset = reset;
+  exports.unstable_IdlePriority = IdlePriority;
+  exports.unstable_ImmediatePriority = ImmediatePriority;
+  exports.unstable_LowPriority = LowPriority;
+  exports.unstable_NormalPriority = NormalPriority;
+  exports.unstable_Profiling = unstable_Profiling;
+  exports.unstable_UserBlockingPriority = UserBlockingPriority;
+  exports.unstable_advanceTime = unstable_advanceTime;
+  exports.unstable_cancelCallback = unstable_cancelCallback;
+  exports.unstable_clearYields = unstable_clearYields;
+  exports.unstable_continueExecution = unstable_continueExecution;
+  exports.unstable_flushAll = unstable_flushAll;
+  exports.unstable_flushAllWithoutAsserting = unstable_flushAllWithoutAsserting;
+  exports.unstable_flushExpired = unstable_flushExpired;
+  exports.unstable_flushNumberOfYields = unstable_flushNumberOfYields;
+  exports.unstable_flushUntilNextPaint = unstable_flushUntilNextPaint;
+  exports.unstable_forceFrameRate = forceFrameRate;
+  exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
+  exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
+  exports.unstable_next = unstable_next;
+  exports.unstable_now = getCurrentTime;
+  exports.unstable_pauseExecution = unstable_pauseExecution;
+  exports.unstable_requestPaint = requestPaint;
+  exports.unstable_runWithPriority = unstable_runWithPriority;
+  exports.unstable_scheduleCallback = unstable_scheduleCallback;
+  exports.unstable_shouldYield = shouldYieldToHost;
+  exports.unstable_wrapCallback = unstable_wrapCallback;
+  exports.unstable_yieldValue = unstable_yieldValue;
+
+})));
diff --git a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-unstable_mock.production.min.js b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-unstable_mock.production.min.js
new file mode 100644
index 0000000000000..26808939fb846
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-unstable_mock.production.min.js
@@ -0,0 +1,18 @@
+/** @license React vundefined
+ * scheduler-unstable_mock.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+(function(){'use strict';(function(a,p){"object"===typeof exports&&"undefined"!==typeof module?p(exports):"function"===typeof define&&define.amd?define(["exports"],p):(a=a||self,p(a.SchedulerMock={}))})(this,function(a){function p(b,h){var c=b.length;b.push(h);a:for(;;){var a=c-1>>>1,w=b[a];if(void 0!==w&&0<z(w,h))b[a]=h,b[c]=w,c=a;else break a}}function m(b){b=b[0];return void 0===b?null:b}function A(b){var h=b[0];if(void 0!==h){var c=b.pop();if(c!==h){b[0]=c;a:for(var a=0,w=b.length;a<w;){var e=2*(a+1)-1,d=
+b[e],g=e+1,f=b[g];if(void 0!==d&&0>z(d,c))void 0!==f&&0>z(f,d)?(b[a]=f,b[g]=c,a=g):(b[a]=d,b[e]=c,a=e);else if(void 0!==f&&0>z(f,c))b[a]=f,b[g]=c,a=g;else break a}}return h}return null}function z(b,h){var a=b.sortIndex-h.sortIndex;return 0!==a?a:b.id-h.id}function D(b){for(var a=m(r);null!==a;){if(null===a.callback)A(r);else if(a.startTime<=b)A(r),a.sortIndex=a.expirationTime,p(n,a);else break;a=m(r)}}function E(b){x=!1;D(b);if(!u)if(null!==m(n))u=!0,e=F;else{var a=m(r);null!==a&&(b=a.startTime-b,
+q=E,t=g+b)}}function F(b,a){u=!1;x&&(x=!1,q=null,t=-1);B=!0;var c=d;try{D(a);for(l=m(n);null!==l&&(!(l.expirationTime>a)||b&&!H());){var h=l.callback;if("function"===typeof h){l.callback=null;d=l.priorityLevel;var e=h(l.expirationTime<=a);a=g;"function"===typeof e?l.callback=e:l===m(n)&&A(n);D(a)}else A(n);l=m(n)}if(null!==l)var f=!0;else{var k=m(r);if(null!==k){var p=k.startTime-a;q=E;t=g+p}f=!1}return f}finally{l=null,d=c,B=!1}}function H(){return-1!==y&&null!==k&&k.length>=y||G&&C?v=!0:!1}function I(){if(f)throw Error("Already flushing work.");
+if(null!==e){var b=e;f=!0;try{var a=!0;do a=b(!0,g);while(a);a||(e=null);return!0}finally{f=!1}}else return!1}var n=[],r=[],J=1,l=null,d=3,B=!1,u=!1,x=!1,g=0,e=null,q=null,t=-1,k=null,y=-1,v=!1,f=!1,C=!1,G=!1;a.reset=function(){if(f)throw Error("Cannot reset while already flushing work.");g=0;q=e=null;t=-1;k=null;y=-1;C=f=v=!1};a.unstable_IdlePriority=5;a.unstable_ImmediatePriority=1;a.unstable_LowPriority=4;a.unstable_NormalPriority=3;a.unstable_Profiling=null;a.unstable_UserBlockingPriority=2;a.unstable_advanceTime=
+function(b){"disabledLog"!==console.log.name&&(g+=b,null!==q&&t<=g&&(q(g),t=-1,q=null))};a.unstable_cancelCallback=function(b){b.callback=null};a.unstable_clearYields=function(){if(null===k)return[];var b=k;k=null;return b};a.unstable_continueExecution=function(){u||B||(u=!0,e=F)};a.unstable_flushAll=function(){if(null!==k)throw Error("Log is not empty. Assert on the log of yielded values before flushing additional work.");I();if(null!==k)throw Error("While flushing work, something yielded a value. Use an assertion helper to assert on the log of yielded values, e.g. expect(Scheduler).toFlushAndYield([...])");
+};a.unstable_flushAllWithoutAsserting=I;a.unstable_flushExpired=function(){if(f)throw Error("Already flushing work.");if(null!==e){f=!0;try{e(!1,g)||(e=null)}finally{f=!1}}};a.unstable_flushNumberOfYields=function(b){if(f)throw Error("Already flushing work.");if(null!==e){var a=e;y=b;f=!0;try{b=!0;do b=a(!0,g);while(b&&!v);b||(e=null)}finally{y=-1,f=v=!1}}};a.unstable_flushUntilNextPaint=function(){if(f)throw Error("Already flushing work.");if(null!==e){var a=e;G=!0;C=!1;f=!0;try{var h=!0;do h=a(!0,
+g);while(h&&!v);h||(e=null)}finally{f=v=G=!1}}};a.unstable_forceFrameRate=function(){};a.unstable_getCurrentPriorityLevel=function(){return d};a.unstable_getFirstCallbackNode=function(){return m(n)};a.unstable_next=function(a){switch(d){case 1:case 2:case 3:var b=3;break;default:b=d}var c=d;d=b;try{return a()}finally{d=c}};a.unstable_now=function(){return g};a.unstable_pauseExecution=function(){};a.unstable_requestPaint=function(){C=!0};a.unstable_runWithPriority=function(a,e){switch(a){case 1:case 2:case 3:case 4:case 5:break;
+default:a=3}var b=d;d=a;try{return e()}finally{d=b}};a.unstable_scheduleCallback=function(a,f,c){var b=g;"object"===typeof c&&null!==c?(c=c.delay,c="number"===typeof c&&0<c?b+c:b):c=b;switch(a){case 1:var d=-1;break;case 2:d=250;break;case 5:d=1073741823;break;case 4:d=1E4;break;default:d=5E3}d=c+d;a={id:J++,callback:f,priorityLevel:a,startTime:c,expirationTime:d,sortIndex:-1};c>b?(a.sortIndex=c,p(r,a),null===m(n)&&a===m(r)&&(x?(q=null,t=-1):x=!0,q=E,t=g+(c-b))):(a.sortIndex=d,p(n,a),u||B||(u=!0,
+e=F));return a};a.unstable_shouldYield=H;a.unstable_wrapCallback=function(a){var b=d;return function(){var c=d;d=b;try{return a.apply(this,arguments)}finally{d=c}}};a.unstable_yieldValue=function(a){"disabledLog"!==console.log.name&&(null===k?k=[a]:k.push(a))}});
+})();
diff --git a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler.development.js b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler.development.js
new file mode 100644
index 0000000000000..b960dc91132e7
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler.development.js
@@ -0,0 +1,152 @@
+/**
+ * @license React
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/* eslint-disable max-len */
+
+'use strict';
+
+(function(global, factory) {
+  // eslint-disable-next-line no-unused-expressions
+  typeof exports === 'object' && typeof module !== 'undefined'
+    ? (module.exports = factory(require('react')))
+    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
+    ? define(['react'], factory) // eslint-disable-line no-undef
+    : (global.Scheduler = factory(global));
+})(this, function(global) {
+  function unstable_now() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_now.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_scheduleCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_scheduleCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_cancelCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_cancelCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_shouldYield() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_shouldYield.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_requestPaint() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_requestPaint.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_runWithPriority() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_runWithPriority.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_next() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_next.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_wrapCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_wrapCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getCurrentPriorityLevel() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getCurrentPriorityLevel.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getFirstCallbackNode() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getFirstCallbackNode.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_pauseExecution() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_pauseExecution.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_continueExecution() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_continueExecution.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_forceFrameRate() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_forceFrameRate.apply(
+      this,
+      arguments
+    );
+  }
+
+  return Object.freeze({
+    unstable_now: unstable_now,
+    unstable_scheduleCallback: unstable_scheduleCallback,
+    unstable_cancelCallback: unstable_cancelCallback,
+    unstable_shouldYield: unstable_shouldYield,
+    unstable_requestPaint: unstable_requestPaint,
+    unstable_runWithPriority: unstable_runWithPriority,
+    unstable_next: unstable_next,
+    unstable_wrapCallback: unstable_wrapCallback,
+    unstable_getCurrentPriorityLevel: unstable_getCurrentPriorityLevel,
+    unstable_continueExecution: unstable_continueExecution,
+    unstable_pauseExecution: unstable_pauseExecution,
+    unstable_getFirstCallbackNode: unstable_getFirstCallbackNode,
+    unstable_forceFrameRate: unstable_forceFrameRate,
+    get unstable_IdlePriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_IdlePriority;
+    },
+    get unstable_ImmediatePriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_ImmediatePriority;
+    },
+    get unstable_LowPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_LowPriority;
+    },
+    get unstable_NormalPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_NormalPriority;
+    },
+    get unstable_UserBlockingPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_UserBlockingPriority;
+    },
+    get unstable_Profiling() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_Profiling;
+    },
+  });
+});
diff --git a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler.production.min.js b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler.production.min.js
new file mode 100644
index 0000000000000..0c2584331b847
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler.production.min.js
@@ -0,0 +1,146 @@
+/**
+ * @license React
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/* eslint-disable max-len */
+
+'use strict';
+
+(function(global, factory) {
+  // eslint-disable-next-line no-unused-expressions
+  typeof exports === 'object' && typeof module !== 'undefined'
+    ? (module.exports = factory(require('react')))
+    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
+    ? define(['react'], factory) // eslint-disable-line no-undef
+    : (global.Scheduler = factory(global));
+})(this, function(global) {
+  function unstable_now() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_now.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_scheduleCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_scheduleCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_cancelCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_cancelCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_shouldYield() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_shouldYield.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_requestPaint() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_requestPaint.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_runWithPriority() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_runWithPriority.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_next() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_next.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_wrapCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_wrapCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getCurrentPriorityLevel() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getCurrentPriorityLevel.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getFirstCallbackNode() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getFirstCallbackNode.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_pauseExecution() {
+    return undefined;
+  }
+
+  function unstable_continueExecution() {
+    return undefined;
+  }
+
+  function unstable_forceFrameRate() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_forceFrameRate.apply(
+      this,
+      arguments
+    );
+  }
+
+  return Object.freeze({
+    unstable_now: unstable_now,
+    unstable_scheduleCallback: unstable_scheduleCallback,
+    unstable_cancelCallback: unstable_cancelCallback,
+    unstable_shouldYield: unstable_shouldYield,
+    unstable_requestPaint: unstable_requestPaint,
+    unstable_runWithPriority: unstable_runWithPriority,
+    unstable_next: unstable_next,
+    unstable_wrapCallback: unstable_wrapCallback,
+    unstable_getCurrentPriorityLevel: unstable_getCurrentPriorityLevel,
+    unstable_continueExecution: unstable_continueExecution,
+    unstable_pauseExecution: unstable_pauseExecution,
+    unstable_getFirstCallbackNode: unstable_getFirstCallbackNode,
+    unstable_forceFrameRate: unstable_forceFrameRate,
+    get unstable_IdlePriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_IdlePriority;
+    },
+    get unstable_ImmediatePriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_ImmediatePriority;
+    },
+    get unstable_LowPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_LowPriority;
+    },
+    get unstable_NormalPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_NormalPriority;
+    },
+    get unstable_UserBlockingPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_UserBlockingPriority;
+    },
+    get unstable_Profiling() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_Profiling;
+    },
+  });
+});
diff --git a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler.profiling.min.js b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler.profiling.min.js
new file mode 100644
index 0000000000000..0c2584331b847
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler.profiling.min.js
@@ -0,0 +1,146 @@
+/**
+ * @license React
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/* eslint-disable max-len */
+
+'use strict';
+
+(function(global, factory) {
+  // eslint-disable-next-line no-unused-expressions
+  typeof exports === 'object' && typeof module !== 'undefined'
+    ? (module.exports = factory(require('react')))
+    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
+    ? define(['react'], factory) // eslint-disable-line no-undef
+    : (global.Scheduler = factory(global));
+})(this, function(global) {
+  function unstable_now() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_now.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_scheduleCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_scheduleCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_cancelCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_cancelCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_shouldYield() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_shouldYield.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_requestPaint() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_requestPaint.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_runWithPriority() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_runWithPriority.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_next() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_next.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_wrapCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_wrapCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getCurrentPriorityLevel() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getCurrentPriorityLevel.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getFirstCallbackNode() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getFirstCallbackNode.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_pauseExecution() {
+    return undefined;
+  }
+
+  function unstable_continueExecution() {
+    return undefined;
+  }
+
+  function unstable_forceFrameRate() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_forceFrameRate.apply(
+      this,
+      arguments
+    );
+  }
+
+  return Object.freeze({
+    unstable_now: unstable_now,
+    unstable_scheduleCallback: unstable_scheduleCallback,
+    unstable_cancelCallback: unstable_cancelCallback,
+    unstable_shouldYield: unstable_shouldYield,
+    unstable_requestPaint: unstable_requestPaint,
+    unstable_runWithPriority: unstable_runWithPriority,
+    unstable_next: unstable_next,
+    unstable_wrapCallback: unstable_wrapCallback,
+    unstable_getCurrentPriorityLevel: unstable_getCurrentPriorityLevel,
+    unstable_continueExecution: unstable_continueExecution,
+    unstable_pauseExecution: unstable_pauseExecution,
+    unstable_getFirstCallbackNode: unstable_getFirstCallbackNode,
+    unstable_forceFrameRate: unstable_forceFrameRate,
+    get unstable_IdlePriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_IdlePriority;
+    },
+    get unstable_ImmediatePriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_ImmediatePriority;
+    },
+    get unstable_LowPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_LowPriority;
+    },
+    get unstable_NormalPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_NormalPriority;
+    },
+    get unstable_UserBlockingPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_UserBlockingPriority;
+    },
+    get unstable_Profiling() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_Profiling;
+    },
+  });
+});
diff --git a/fixtures/tests/schedulers/pr/scheduler/unstable_mock.js b/fixtures/tests/schedulers/pr/scheduler/unstable_mock.js
new file mode 100644
index 0000000000000..e72ea3186f005
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/unstable_mock.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/scheduler-unstable_mock.production.min.js');
+} else {
+  module.exports = require('./cjs/scheduler-unstable_mock.development.js');
+}
diff --git a/fixtures/tests/schedulers/pr/scheduler/unstable_post_task.js b/fixtures/tests/schedulers/pr/scheduler/unstable_post_task.js
new file mode 100644
index 0000000000000..62ecbd5a072bc
--- /dev/null
+++ b/fixtures/tests/schedulers/pr/scheduler/unstable_post_task.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/scheduler-unstable_post_task.production.min.js');
+} else {
+  module.exports = require('./cjs/scheduler-unstable_post_task.development.js');
+}
diff --git a/fixtures/tests/schedulers/stable/scheduler/LICENSE b/fixtures/tests/schedulers/stable/scheduler/LICENSE
new file mode 100644
index 0000000000000..b96dcb0480a0b
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) Facebook, Inc. and its affiliates.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/fixtures/tests/schedulers/stable/scheduler/README.md b/fixtures/tests/schedulers/stable/scheduler/README.md
new file mode 100644
index 0000000000000..10e4937a05b96
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/README.md
@@ -0,0 +1,9 @@
+# `scheduler`
+
+This is a package for cooperative scheduling in a browser environment. It is currently used internally by React, but we plan to make it more generic.
+
+The public API for this package is not yet finalized.
+
+### Thanks
+
+The React team thanks [Anton Podviaznikov](https://podviaznikov.com/) for donating the `scheduler` package name.
diff --git a/fixtures/tests/schedulers/stable/scheduler/build-info.json b/fixtures/tests/schedulers/stable/scheduler/build-info.json
new file mode 100644
index 0000000000000..5617e884a6192
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/build-info.json
@@ -0,0 +1,8 @@
+{
+  "branch": "17.0.1",
+  "buildNumber": "222790",
+  "checksum": "addb3df",
+  "commit": "8e5adfbd7",
+  "environment": "ci",
+  "reactVersion": "17.0.0-8e5adfbd7"
+}
diff --git a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.development.js b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.development.js
new file mode 100644
index 0000000000000..657c1ea83d570
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.development.js
@@ -0,0 +1,347 @@
+/** @license React v0.20.1
+ * scheduler-tracing.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+var DEFAULT_THREAD_ID = 0; // Counters used to generate unique IDs.
+
+var interactionIDCounter = 0;
+var threadIDCounter = 0; // Set of currently traced interactions.
+// Interactions "stack"–
+// Meaning that newly traced interactions are appended to the previously active set.
+// When an interaction goes out of scope, the previous set (if any) is restored.
+
+exports.__interactionsRef = null; // Listener(s) to notify when interactions begin and end.
+
+exports.__subscriberRef = null;
+
+{
+  exports.__interactionsRef = {
+    current: new Set()
+  };
+  exports.__subscriberRef = {
+    current: null
+  };
+}
+function unstable_clear(callback) {
+
+  var prevInteractions = exports.__interactionsRef.current;
+  exports.__interactionsRef.current = new Set();
+
+  try {
+    return callback();
+  } finally {
+    exports.__interactionsRef.current = prevInteractions;
+  }
+}
+function unstable_getCurrent() {
+  {
+    return exports.__interactionsRef.current;
+  }
+}
+function unstable_getThreadID() {
+  return ++threadIDCounter;
+}
+function unstable_trace(name, timestamp, callback) {
+  var threadID = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : DEFAULT_THREAD_ID;
+
+  var interaction = {
+    __count: 1,
+    id: interactionIDCounter++,
+    name: name,
+    timestamp: timestamp
+  };
+  var prevInteractions = exports.__interactionsRef.current; // Traced interactions should stack/accumulate.
+  // To do that, clone the current interactions.
+  // The previous set will be restored upon completion.
+
+  var interactions = new Set(prevInteractions);
+  interactions.add(interaction);
+  exports.__interactionsRef.current = interactions;
+  var subscriber = exports.__subscriberRef.current;
+  var returnValue;
+
+  try {
+    if (subscriber !== null) {
+      subscriber.onInteractionTraced(interaction);
+    }
+  } finally {
+    try {
+      if (subscriber !== null) {
+        subscriber.onWorkStarted(interactions, threadID);
+      }
+    } finally {
+      try {
+        returnValue = callback();
+      } finally {
+        exports.__interactionsRef.current = prevInteractions;
+
+        try {
+          if (subscriber !== null) {
+            subscriber.onWorkStopped(interactions, threadID);
+          }
+        } finally {
+          interaction.__count--; // If no async work was scheduled for this interaction,
+          // Notify subscribers that it's completed.
+
+          if (subscriber !== null && interaction.__count === 0) {
+            subscriber.onInteractionScheduledWorkCompleted(interaction);
+          }
+        }
+      }
+    }
+  }
+
+  return returnValue;
+}
+function unstable_wrap(callback) {
+  var threadID = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : DEFAULT_THREAD_ID;
+
+  var wrappedInteractions = exports.__interactionsRef.current;
+  var subscriber = exports.__subscriberRef.current;
+
+  if (subscriber !== null) {
+    subscriber.onWorkScheduled(wrappedInteractions, threadID);
+  } // Update the pending async work count for the current interactions.
+  // Update after calling subscribers in case of error.
+
+
+  wrappedInteractions.forEach(function (interaction) {
+    interaction.__count++;
+  });
+  var hasRun = false;
+
+  function wrapped() {
+    var prevInteractions = exports.__interactionsRef.current;
+    exports.__interactionsRef.current = wrappedInteractions;
+    subscriber = exports.__subscriberRef.current;
+
+    try {
+      var returnValue;
+
+      try {
+        if (subscriber !== null) {
+          subscriber.onWorkStarted(wrappedInteractions, threadID);
+        }
+      } finally {
+        try {
+          returnValue = callback.apply(undefined, arguments);
+        } finally {
+          exports.__interactionsRef.current = prevInteractions;
+
+          if (subscriber !== null) {
+            subscriber.onWorkStopped(wrappedInteractions, threadID);
+          }
+        }
+      }
+
+      return returnValue;
+    } finally {
+      if (!hasRun) {
+        // We only expect a wrapped function to be executed once,
+        // But in the event that it's executed more than once–
+        // Only decrement the outstanding interaction counts once.
+        hasRun = true; // Update pending async counts for all wrapped interactions.
+        // If this was the last scheduled async work for any of them,
+        // Mark them as completed.
+
+        wrappedInteractions.forEach(function (interaction) {
+          interaction.__count--;
+
+          if (subscriber !== null && interaction.__count === 0) {
+            subscriber.onInteractionScheduledWorkCompleted(interaction);
+          }
+        });
+      }
+    }
+  }
+
+  wrapped.cancel = function cancel() {
+    subscriber = exports.__subscriberRef.current;
+
+    try {
+      if (subscriber !== null) {
+        subscriber.onWorkCanceled(wrappedInteractions, threadID);
+      }
+    } finally {
+      // Update pending async counts for all wrapped interactions.
+      // If this was the last scheduled async work for any of them,
+      // Mark them as completed.
+      wrappedInteractions.forEach(function (interaction) {
+        interaction.__count--;
+
+        if (subscriber && interaction.__count === 0) {
+          subscriber.onInteractionScheduledWorkCompleted(interaction);
+        }
+      });
+    }
+  };
+
+  return wrapped;
+}
+
+var subscribers = null;
+
+{
+  subscribers = new Set();
+}
+
+function unstable_subscribe(subscriber) {
+  {
+    subscribers.add(subscriber);
+
+    if (subscribers.size === 1) {
+      exports.__subscriberRef.current = {
+        onInteractionScheduledWorkCompleted: onInteractionScheduledWorkCompleted,
+        onInteractionTraced: onInteractionTraced,
+        onWorkCanceled: onWorkCanceled,
+        onWorkScheduled: onWorkScheduled,
+        onWorkStarted: onWorkStarted,
+        onWorkStopped: onWorkStopped
+      };
+    }
+  }
+}
+function unstable_unsubscribe(subscriber) {
+  {
+    subscribers.delete(subscriber);
+
+    if (subscribers.size === 0) {
+      exports.__subscriberRef.current = null;
+    }
+  }
+}
+
+function onInteractionTraced(interaction) {
+  var didCatchError = false;
+  var caughtError = null;
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onInteractionTraced(interaction);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+function onInteractionScheduledWorkCompleted(interaction) {
+  var didCatchError = false;
+  var caughtError = null;
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onInteractionScheduledWorkCompleted(interaction);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+function onWorkScheduled(interactions, threadID) {
+  var didCatchError = false;
+  var caughtError = null;
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onWorkScheduled(interactions, threadID);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+function onWorkStarted(interactions, threadID) {
+  var didCatchError = false;
+  var caughtError = null;
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onWorkStarted(interactions, threadID);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+function onWorkStopped(interactions, threadID) {
+  var didCatchError = false;
+  var caughtError = null;
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onWorkStopped(interactions, threadID);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+function onWorkCanceled(interactions, threadID) {
+  var didCatchError = false;
+  var caughtError = null;
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onWorkCanceled(interactions, threadID);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+exports.unstable_clear = unstable_clear;
+exports.unstable_getCurrent = unstable_getCurrent;
+exports.unstable_getThreadID = unstable_getThreadID;
+exports.unstable_subscribe = unstable_subscribe;
+exports.unstable_trace = unstable_trace;
+exports.unstable_unsubscribe = unstable_unsubscribe;
+exports.unstable_wrap = unstable_wrap;
+  })();
+}
diff --git a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.production.min.js b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.production.min.js
new file mode 100644
index 0000000000000..f15a5d090d72d
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.production.min.js
@@ -0,0 +1,9 @@
+/** @license React v0.20.1
+ * scheduler-tracing.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+'use strict';var b=0;exports.__interactionsRef=null;exports.__subscriberRef=null;exports.unstable_clear=function(a){return a()};exports.unstable_getCurrent=function(){return null};exports.unstable_getThreadID=function(){return++b};exports.unstable_subscribe=function(){};exports.unstable_trace=function(a,d,c){return c()};exports.unstable_unsubscribe=function(){};exports.unstable_wrap=function(a){return a};
diff --git a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.profiling.min.js b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.profiling.min.js
new file mode 100644
index 0000000000000..6910bd0392047
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.profiling.min.js
@@ -0,0 +1,16 @@
+/** @license React v0.20.1
+ * scheduler-tracing.profiling.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+'use strict';var g=0,l=0;exports.__interactionsRef=null;exports.__subscriberRef=null;exports.__interactionsRef={current:new Set};exports.__subscriberRef={current:null};var m=null;m=new Set;function n(e){var d=!1,a=null;m.forEach(function(c){try{c.onInteractionTraced(e)}catch(b){d||(d=!0,a=b)}});if(d)throw a;}function p(e){var d=!1,a=null;m.forEach(function(c){try{c.onInteractionScheduledWorkCompleted(e)}catch(b){d||(d=!0,a=b)}});if(d)throw a;}
+function q(e,d){var a=!1,c=null;m.forEach(function(b){try{b.onWorkScheduled(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}function r(e,d){var a=!1,c=null;m.forEach(function(b){try{b.onWorkStarted(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}function t(e,d){var a=!1,c=null;m.forEach(function(b){try{b.onWorkStopped(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}function u(e,d){var a=!1,c=null;m.forEach(function(b){try{b.onWorkCanceled(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}
+exports.unstable_clear=function(e){var d=exports.__interactionsRef.current;exports.__interactionsRef.current=new Set;try{return e()}finally{exports.__interactionsRef.current=d}};exports.unstable_getCurrent=function(){return exports.__interactionsRef.current};exports.unstable_getThreadID=function(){return++l};
+exports.unstable_subscribe=function(e){m.add(e);1===m.size&&(exports.__subscriberRef.current={onInteractionScheduledWorkCompleted:p,onInteractionTraced:n,onWorkCanceled:u,onWorkScheduled:q,onWorkStarted:r,onWorkStopped:t})};
+exports.unstable_trace=function(e,d,a){var c=3<arguments.length&&void 0!==arguments[3]?arguments[3]:0,b={__count:1,id:g++,name:e,timestamp:d},f=exports.__interactionsRef.current,k=new Set(f);k.add(b);exports.__interactionsRef.current=k;var h=exports.__subscriberRef.current;try{if(null!==h)h.onInteractionTraced(b)}finally{try{if(null!==h)h.onWorkStarted(k,c)}finally{try{var v=a()}finally{exports.__interactionsRef.current=f;try{if(null!==h)h.onWorkStopped(k,c)}finally{if(b.__count--,null!==h&&0===b.__count)h.onInteractionScheduledWorkCompleted(b)}}}}return v};
+exports.unstable_unsubscribe=function(e){m.delete(e);0===m.size&&(exports.__subscriberRef.current=null)};
+exports.unstable_wrap=function(e){function d(){var d=exports.__interactionsRef.current;exports.__interactionsRef.current=c;b=exports.__subscriberRef.current;try{try{if(null!==b)b.onWorkStarted(c,a)}finally{try{var h=e.apply(void 0,arguments)}finally{if(exports.__interactionsRef.current=d,null!==b)b.onWorkStopped(c,a)}}return h}finally{f||(f=!0,c.forEach(function(a){a.__count--;if(null!==b&&0===a.__count)b.onInteractionScheduledWorkCompleted(a)}))}}var a=1<arguments.length&&void 0!==arguments[1]?arguments[1]:
+0,c=exports.__interactionsRef.current,b=exports.__subscriberRef.current;if(null!==b)b.onWorkScheduled(c,a);c.forEach(function(a){a.__count++});var f=!1;d.cancel=function(){b=exports.__subscriberRef.current;try{if(null!==b)b.onWorkCanceled(c,a)}finally{c.forEach(function(a){a.__count--;if(b&&0===a.__count)b.onInteractionScheduledWorkCompleted(a)})}};return d};
diff --git a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_mock.development.js b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_mock.development.js
new file mode 100644
index 0000000000000..594447e517964
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_mock.development.js
@@ -0,0 +1,863 @@
+/** @license React v0.20.1
+ * scheduler-unstable_mock.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+var enableSchedulerDebugging = false;
+var enableProfiling = true;
+
+var currentTime = 0;
+var scheduledCallback = null;
+var scheduledTimeout = null;
+var timeoutTime = -1;
+var yieldedValues = null;
+var expectedNumberOfYields = -1;
+var didStop = false;
+var isFlushing = false;
+var needsPaint = false;
+var shouldYieldForPaint = false;
+function requestHostCallback(callback) {
+  scheduledCallback = callback;
+}
+function requestHostTimeout(callback, ms) {
+  scheduledTimeout = callback;
+  timeoutTime = currentTime + ms;
+}
+function cancelHostTimeout() {
+  scheduledTimeout = null;
+  timeoutTime = -1;
+}
+function shouldYieldToHost() {
+  if (expectedNumberOfYields !== -1 && yieldedValues !== null && yieldedValues.length >= expectedNumberOfYields || shouldYieldForPaint && needsPaint) {
+    // We yielded at least as many values as expected. Stop flushing.
+    didStop = true;
+    return true;
+  }
+
+  return false;
+}
+function getCurrentTime() {
+  return currentTime;
+}
+function forceFrameRate() {// No-op
+}
+
+function unstable_flushNumberOfYields(count) {
+  if (isFlushing) {
+    throw new Error('Already flushing work.');
+  }
+
+  if (scheduledCallback !== null) {
+    var cb = scheduledCallback;
+    expectedNumberOfYields = count;
+    isFlushing = true;
+
+    try {
+      var hasMoreWork = true;
+
+      do {
+        hasMoreWork = cb(true, currentTime);
+      } while (hasMoreWork && !didStop);
+
+      if (!hasMoreWork) {
+        scheduledCallback = null;
+      }
+    } finally {
+      expectedNumberOfYields = -1;
+      didStop = false;
+      isFlushing = false;
+    }
+  }
+}
+function unstable_flushUntilNextPaint() {
+  if (isFlushing) {
+    throw new Error('Already flushing work.');
+  }
+
+  if (scheduledCallback !== null) {
+    var cb = scheduledCallback;
+    shouldYieldForPaint = true;
+    needsPaint = false;
+    isFlushing = true;
+
+    try {
+      var hasMoreWork = true;
+
+      do {
+        hasMoreWork = cb(true, currentTime);
+      } while (hasMoreWork && !didStop);
+
+      if (!hasMoreWork) {
+        scheduledCallback = null;
+      }
+    } finally {
+      shouldYieldForPaint = false;
+      didStop = false;
+      isFlushing = false;
+    }
+  }
+}
+function unstable_flushExpired() {
+  if (isFlushing) {
+    throw new Error('Already flushing work.');
+  }
+
+  if (scheduledCallback !== null) {
+    isFlushing = true;
+
+    try {
+      var hasMoreWork = scheduledCallback(false, currentTime);
+
+      if (!hasMoreWork) {
+        scheduledCallback = null;
+      }
+    } finally {
+      isFlushing = false;
+    }
+  }
+}
+function unstable_flushAllWithoutAsserting() {
+  // Returns false if no work was flushed.
+  if (isFlushing) {
+    throw new Error('Already flushing work.');
+  }
+
+  if (scheduledCallback !== null) {
+    var cb = scheduledCallback;
+    isFlushing = true;
+
+    try {
+      var hasMoreWork = true;
+
+      do {
+        hasMoreWork = cb(true, currentTime);
+      } while (hasMoreWork);
+
+      if (!hasMoreWork) {
+        scheduledCallback = null;
+      }
+
+      return true;
+    } finally {
+      isFlushing = false;
+    }
+  } else {
+    return false;
+  }
+}
+function unstable_clearYields() {
+  if (yieldedValues === null) {
+    return [];
+  }
+
+  var values = yieldedValues;
+  yieldedValues = null;
+  return values;
+}
+function unstable_flushAll() {
+  if (yieldedValues !== null) {
+    throw new Error('Log is not empty. Assert on the log of yielded values before ' + 'flushing additional work.');
+  }
+
+  unstable_flushAllWithoutAsserting();
+
+  if (yieldedValues !== null) {
+    throw new Error('While flushing work, something yielded a value. Use an ' + 'assertion helper to assert on the log of yielded values, e.g. ' + 'expect(Scheduler).toFlushAndYield([...])');
+  }
+}
+function unstable_yieldValue(value) {
+  // eslint-disable-next-line react-internal/no-production-logging
+  if (console.log.name === 'disabledLog') {
+    // If console.log has been patched, we assume we're in render
+    // replaying and we ignore any values yielding in the second pass.
+    return;
+  }
+
+  if (yieldedValues === null) {
+    yieldedValues = [value];
+  } else {
+    yieldedValues.push(value);
+  }
+}
+function unstable_advanceTime(ms) {
+  // eslint-disable-next-line react-internal/no-production-logging
+  if (console.log.name === 'disabledLog') {
+    // If console.log has been patched, we assume we're in render
+    // replaying and we ignore any time advancing in the second pass.
+    return;
+  }
+
+  currentTime += ms;
+
+  if (scheduledTimeout !== null && timeoutTime <= currentTime) {
+    scheduledTimeout(currentTime);
+    timeoutTime = -1;
+    scheduledTimeout = null;
+  }
+}
+function requestPaint() {
+  needsPaint = true;
+}
+
+function push(heap, node) {
+  var index = heap.length;
+  heap.push(node);
+  siftUp(heap, node, index);
+}
+function peek(heap) {
+  var first = heap[0];
+  return first === undefined ? null : first;
+}
+function pop(heap) {
+  var first = heap[0];
+
+  if (first !== undefined) {
+    var last = heap.pop();
+
+    if (last !== first) {
+      heap[0] = last;
+      siftDown(heap, last, 0);
+    }
+
+    return first;
+  } else {
+    return null;
+  }
+}
+
+function siftUp(heap, node, i) {
+  var index = i;
+
+  while (true) {
+    var parentIndex = index - 1 >>> 1;
+    var parent = heap[parentIndex];
+
+    if (parent !== undefined && compare(parent, node) > 0) {
+      // The parent is larger. Swap positions.
+      heap[parentIndex] = node;
+      heap[index] = parent;
+      index = parentIndex;
+    } else {
+      // The parent is smaller. Exit.
+      return;
+    }
+  }
+}
+
+function siftDown(heap, node, i) {
+  var index = i;
+  var length = heap.length;
+
+  while (index < length) {
+    var leftIndex = (index + 1) * 2 - 1;
+    var left = heap[leftIndex];
+    var rightIndex = leftIndex + 1;
+    var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those.
+
+    if (left !== undefined && compare(left, node) < 0) {
+      if (right !== undefined && compare(right, left) < 0) {
+        heap[index] = right;
+        heap[rightIndex] = node;
+        index = rightIndex;
+      } else {
+        heap[index] = left;
+        heap[leftIndex] = node;
+        index = leftIndex;
+      }
+    } else if (right !== undefined && compare(right, node) < 0) {
+      heap[index] = right;
+      heap[rightIndex] = node;
+      index = rightIndex;
+    } else {
+      // Neither child is smaller. Exit.
+      return;
+    }
+  }
+}
+
+function compare(a, b) {
+  // Compare sort index first, then task id.
+  var diff = a.sortIndex - b.sortIndex;
+  return diff !== 0 ? diff : a.id - b.id;
+}
+
+// TODO: Use symbols?
+var NoPriority = 0;
+var ImmediatePriority = 1;
+var UserBlockingPriority = 2;
+var NormalPriority = 3;
+var LowPriority = 4;
+var IdlePriority = 5;
+
+var runIdCounter = 0;
+var mainThreadIdCounter = 0;
+var profilingStateSize = 4;
+var sharedProfilingBuffer =  // $FlowFixMe Flow doesn't know about SharedArrayBuffer
+typeof SharedArrayBuffer === 'function' ? new SharedArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : // $FlowFixMe Flow doesn't know about ArrayBuffer
+typeof ArrayBuffer === 'function' ? new ArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : null // Don't crash the init path on IE9
+;
+var profilingState =  sharedProfilingBuffer !== null ? new Int32Array(sharedProfilingBuffer) : []; // We can't read this but it helps save bytes for null checks
+
+var PRIORITY = 0;
+var CURRENT_TASK_ID = 1;
+var CURRENT_RUN_ID = 2;
+var QUEUE_SIZE = 3;
+
+{
+  profilingState[PRIORITY] = NoPriority; // This is maintained with a counter, because the size of the priority queue
+  // array might include canceled tasks.
+
+  profilingState[QUEUE_SIZE] = 0;
+  profilingState[CURRENT_TASK_ID] = 0;
+} // Bytes per element is 4
+
+
+var INITIAL_EVENT_LOG_SIZE = 131072;
+var MAX_EVENT_LOG_SIZE = 524288; // Equivalent to 2 megabytes
+
+var eventLogSize = 0;
+var eventLogBuffer = null;
+var eventLog = null;
+var eventLogIndex = 0;
+var TaskStartEvent = 1;
+var TaskCompleteEvent = 2;
+var TaskErrorEvent = 3;
+var TaskCancelEvent = 4;
+var TaskRunEvent = 5;
+var TaskYieldEvent = 6;
+var SchedulerSuspendEvent = 7;
+var SchedulerResumeEvent = 8;
+
+function logEvent(entries) {
+  if (eventLog !== null) {
+    var offset = eventLogIndex;
+    eventLogIndex += entries.length;
+
+    if (eventLogIndex + 1 > eventLogSize) {
+      eventLogSize *= 2;
+
+      if (eventLogSize > MAX_EVENT_LOG_SIZE) {
+        // Using console['error'] to evade Babel and ESLint
+        console['error']("Scheduler Profiling: Event log exceeded maximum size. Don't " + 'forget to call `stopLoggingProfilingEvents()`.');
+        stopLoggingProfilingEvents();
+        return;
+      }
+
+      var newEventLog = new Int32Array(eventLogSize * 4);
+      newEventLog.set(eventLog);
+      eventLogBuffer = newEventLog.buffer;
+      eventLog = newEventLog;
+    }
+
+    eventLog.set(entries, offset);
+  }
+}
+
+function startLoggingProfilingEvents() {
+  eventLogSize = INITIAL_EVENT_LOG_SIZE;
+  eventLogBuffer = new ArrayBuffer(eventLogSize * 4);
+  eventLog = new Int32Array(eventLogBuffer);
+  eventLogIndex = 0;
+}
+function stopLoggingProfilingEvents() {
+  var buffer = eventLogBuffer;
+  eventLogSize = 0;
+  eventLogBuffer = null;
+  eventLog = null;
+  eventLogIndex = 0;
+  return buffer;
+}
+function markTaskStart(task, ms) {
+  {
+    profilingState[QUEUE_SIZE]++;
+
+    if (eventLog !== null) {
+      // performance.now returns a float, representing milliseconds. When the
+      // event is logged, it's coerced to an int. Convert to microseconds to
+      // maintain extra degrees of precision.
+      logEvent([TaskStartEvent, ms * 1000, task.id, task.priorityLevel]);
+    }
+  }
+}
+function markTaskCompleted(task, ms) {
+  {
+    profilingState[PRIORITY] = NoPriority;
+    profilingState[CURRENT_TASK_ID] = 0;
+    profilingState[QUEUE_SIZE]--;
+
+    if (eventLog !== null) {
+      logEvent([TaskCompleteEvent, ms * 1000, task.id]);
+    }
+  }
+}
+function markTaskCanceled(task, ms) {
+  {
+    profilingState[QUEUE_SIZE]--;
+
+    if (eventLog !== null) {
+      logEvent([TaskCancelEvent, ms * 1000, task.id]);
+    }
+  }
+}
+function markTaskErrored(task, ms) {
+  {
+    profilingState[PRIORITY] = NoPriority;
+    profilingState[CURRENT_TASK_ID] = 0;
+    profilingState[QUEUE_SIZE]--;
+
+    if (eventLog !== null) {
+      logEvent([TaskErrorEvent, ms * 1000, task.id]);
+    }
+  }
+}
+function markTaskRun(task, ms) {
+  {
+    runIdCounter++;
+    profilingState[PRIORITY] = task.priorityLevel;
+    profilingState[CURRENT_TASK_ID] = task.id;
+    profilingState[CURRENT_RUN_ID] = runIdCounter;
+
+    if (eventLog !== null) {
+      logEvent([TaskRunEvent, ms * 1000, task.id, runIdCounter]);
+    }
+  }
+}
+function markTaskYield(task, ms) {
+  {
+    profilingState[PRIORITY] = NoPriority;
+    profilingState[CURRENT_TASK_ID] = 0;
+    profilingState[CURRENT_RUN_ID] = 0;
+
+    if (eventLog !== null) {
+      logEvent([TaskYieldEvent, ms * 1000, task.id, runIdCounter]);
+    }
+  }
+}
+function markSchedulerSuspended(ms) {
+  {
+    mainThreadIdCounter++;
+
+    if (eventLog !== null) {
+      logEvent([SchedulerSuspendEvent, ms * 1000, mainThreadIdCounter]);
+    }
+  }
+}
+function markSchedulerUnsuspended(ms) {
+  {
+    if (eventLog !== null) {
+      logEvent([SchedulerResumeEvent, ms * 1000, mainThreadIdCounter]);
+    }
+  }
+}
+
+/* eslint-disable no-var */
+// Math.pow(2, 30) - 1
+// 0b111111111111111111111111111111
+
+var maxSigned31BitInt = 1073741823; // Times out immediately
+
+var IMMEDIATE_PRIORITY_TIMEOUT = -1; // Eventually times out
+
+var USER_BLOCKING_PRIORITY_TIMEOUT = 250;
+var NORMAL_PRIORITY_TIMEOUT = 5000;
+var LOW_PRIORITY_TIMEOUT = 10000; // Never times out
+
+var IDLE_PRIORITY_TIMEOUT = maxSigned31BitInt; // Tasks are stored on a min heap
+
+var taskQueue = [];
+var timerQueue = []; // Incrementing id counter. Used to maintain insertion order.
+
+var taskIdCounter = 1; // Pausing the scheduler is useful for debugging.
+var currentTask = null;
+var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrancy.
+
+var isPerformingWork = false;
+var isHostCallbackScheduled = false;
+var isHostTimeoutScheduled = false;
+
+function advanceTimers(currentTime) {
+  // Check for tasks that are no longer delayed and add them to the queue.
+  var timer = peek(timerQueue);
+
+  while (timer !== null) {
+    if (timer.callback === null) {
+      // Timer was cancelled.
+      pop(timerQueue);
+    } else if (timer.startTime <= currentTime) {
+      // Timer fired. Transfer to the task queue.
+      pop(timerQueue);
+      timer.sortIndex = timer.expirationTime;
+      push(taskQueue, timer);
+
+      {
+        markTaskStart(timer, currentTime);
+        timer.isQueued = true;
+      }
+    } else {
+      // Remaining timers are pending.
+      return;
+    }
+
+    timer = peek(timerQueue);
+  }
+}
+
+function handleTimeout(currentTime) {
+  isHostTimeoutScheduled = false;
+  advanceTimers(currentTime);
+
+  if (!isHostCallbackScheduled) {
+    if (peek(taskQueue) !== null) {
+      isHostCallbackScheduled = true;
+      requestHostCallback(flushWork);
+    } else {
+      var firstTimer = peek(timerQueue);
+
+      if (firstTimer !== null) {
+        requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
+      }
+    }
+  }
+}
+
+function flushWork(hasTimeRemaining, initialTime) {
+  {
+    markSchedulerUnsuspended(initialTime);
+  } // We'll need a host callback the next time work is scheduled.
+
+
+  isHostCallbackScheduled = false;
+
+  if (isHostTimeoutScheduled) {
+    // We scheduled a timeout but it's no longer needed. Cancel it.
+    isHostTimeoutScheduled = false;
+    cancelHostTimeout();
+  }
+
+  isPerformingWork = true;
+  var previousPriorityLevel = currentPriorityLevel;
+
+  try {
+    if (enableProfiling) {
+      try {
+        return workLoop(hasTimeRemaining, initialTime);
+      } catch (error) {
+        if (currentTask !== null) {
+          var currentTime = getCurrentTime();
+          markTaskErrored(currentTask, currentTime);
+          currentTask.isQueued = false;
+        }
+
+        throw error;
+      }
+    } else {
+      // No catch in prod code path.
+      return workLoop(hasTimeRemaining, initialTime);
+    }
+  } finally {
+    currentTask = null;
+    currentPriorityLevel = previousPriorityLevel;
+    isPerformingWork = false;
+
+    {
+      var _currentTime = getCurrentTime();
+
+      markSchedulerSuspended(_currentTime);
+    }
+  }
+}
+
+function workLoop(hasTimeRemaining, initialTime) {
+  var currentTime = initialTime;
+  advanceTimers(currentTime);
+  currentTask = peek(taskQueue);
+
+  while (currentTask !== null && !(enableSchedulerDebugging )) {
+    if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost())) {
+      // This currentTask hasn't expired, and we've reached the deadline.
+      break;
+    }
+
+    var callback = currentTask.callback;
+
+    if (typeof callback === 'function') {
+      currentTask.callback = null;
+      currentPriorityLevel = currentTask.priorityLevel;
+      var didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
+      markTaskRun(currentTask, currentTime);
+      var continuationCallback = callback(didUserCallbackTimeout);
+      currentTime = getCurrentTime();
+
+      if (typeof continuationCallback === 'function') {
+        currentTask.callback = continuationCallback;
+        markTaskYield(currentTask, currentTime);
+      } else {
+        {
+          markTaskCompleted(currentTask, currentTime);
+          currentTask.isQueued = false;
+        }
+
+        if (currentTask === peek(taskQueue)) {
+          pop(taskQueue);
+        }
+      }
+
+      advanceTimers(currentTime);
+    } else {
+      pop(taskQueue);
+    }
+
+    currentTask = peek(taskQueue);
+  } // Return whether there's additional work
+
+
+  if (currentTask !== null) {
+    return true;
+  } else {
+    var firstTimer = peek(timerQueue);
+
+    if (firstTimer !== null) {
+      requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
+    }
+
+    return false;
+  }
+}
+
+function unstable_runWithPriority(priorityLevel, eventHandler) {
+  switch (priorityLevel) {
+    case ImmediatePriority:
+    case UserBlockingPriority:
+    case NormalPriority:
+    case LowPriority:
+    case IdlePriority:
+      break;
+
+    default:
+      priorityLevel = NormalPriority;
+  }
+
+  var previousPriorityLevel = currentPriorityLevel;
+  currentPriorityLevel = priorityLevel;
+
+  try {
+    return eventHandler();
+  } finally {
+    currentPriorityLevel = previousPriorityLevel;
+  }
+}
+
+function unstable_next(eventHandler) {
+  var priorityLevel;
+
+  switch (currentPriorityLevel) {
+    case ImmediatePriority:
+    case UserBlockingPriority:
+    case NormalPriority:
+      // Shift down to normal priority
+      priorityLevel = NormalPriority;
+      break;
+
+    default:
+      // Anything lower than normal priority should remain at the current level.
+      priorityLevel = currentPriorityLevel;
+      break;
+  }
+
+  var previousPriorityLevel = currentPriorityLevel;
+  currentPriorityLevel = priorityLevel;
+
+  try {
+    return eventHandler();
+  } finally {
+    currentPriorityLevel = previousPriorityLevel;
+  }
+}
+
+function unstable_wrapCallback(callback) {
+  var parentPriorityLevel = currentPriorityLevel;
+  return function () {
+    // This is a fork of runWithPriority, inlined for performance.
+    var previousPriorityLevel = currentPriorityLevel;
+    currentPriorityLevel = parentPriorityLevel;
+
+    try {
+      return callback.apply(this, arguments);
+    } finally {
+      currentPriorityLevel = previousPriorityLevel;
+    }
+  };
+}
+
+function unstable_scheduleCallback(priorityLevel, callback, options) {
+  var currentTime = getCurrentTime();
+  var startTime;
+
+  if (typeof options === 'object' && options !== null) {
+    var delay = options.delay;
+
+    if (typeof delay === 'number' && delay > 0) {
+      startTime = currentTime + delay;
+    } else {
+      startTime = currentTime;
+    }
+  } else {
+    startTime = currentTime;
+  }
+
+  var timeout;
+
+  switch (priorityLevel) {
+    case ImmediatePriority:
+      timeout = IMMEDIATE_PRIORITY_TIMEOUT;
+      break;
+
+    case UserBlockingPriority:
+      timeout = USER_BLOCKING_PRIORITY_TIMEOUT;
+      break;
+
+    case IdlePriority:
+      timeout = IDLE_PRIORITY_TIMEOUT;
+      break;
+
+    case LowPriority:
+      timeout = LOW_PRIORITY_TIMEOUT;
+      break;
+
+    case NormalPriority:
+    default:
+      timeout = NORMAL_PRIORITY_TIMEOUT;
+      break;
+  }
+
+  var expirationTime = startTime + timeout;
+  var newTask = {
+    id: taskIdCounter++,
+    callback: callback,
+    priorityLevel: priorityLevel,
+    startTime: startTime,
+    expirationTime: expirationTime,
+    sortIndex: -1
+  };
+
+  {
+    newTask.isQueued = false;
+  }
+
+  if (startTime > currentTime) {
+    // This is a delayed task.
+    newTask.sortIndex = startTime;
+    push(timerQueue, newTask);
+
+    if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
+      // All tasks are delayed, and this is the task with the earliest delay.
+      if (isHostTimeoutScheduled) {
+        // Cancel an existing timeout.
+        cancelHostTimeout();
+      } else {
+        isHostTimeoutScheduled = true;
+      } // Schedule a timeout.
+
+
+      requestHostTimeout(handleTimeout, startTime - currentTime);
+    }
+  } else {
+    newTask.sortIndex = expirationTime;
+    push(taskQueue, newTask);
+
+    {
+      markTaskStart(newTask, currentTime);
+      newTask.isQueued = true;
+    } // Schedule a host callback, if needed. If we're already performing work,
+    // wait until the next time we yield.
+
+
+    if (!isHostCallbackScheduled && !isPerformingWork) {
+      isHostCallbackScheduled = true;
+      requestHostCallback(flushWork);
+    }
+  }
+
+  return newTask;
+}
+
+function unstable_pauseExecution() {
+}
+
+function unstable_continueExecution() {
+
+  if (!isHostCallbackScheduled && !isPerformingWork) {
+    isHostCallbackScheduled = true;
+    requestHostCallback(flushWork);
+  }
+}
+
+function unstable_getFirstCallbackNode() {
+  return peek(taskQueue);
+}
+
+function unstable_cancelCallback(task) {
+  {
+    if (task.isQueued) {
+      var currentTime = getCurrentTime();
+      markTaskCanceled(task, currentTime);
+      task.isQueued = false;
+    }
+  } // Null out the callback to indicate the task has been canceled. (Can't
+  // remove from the queue because you can't remove arbitrary nodes from an
+  // array based heap, only the first one.)
+
+
+  task.callback = null;
+}
+
+function unstable_getCurrentPriorityLevel() {
+  return currentPriorityLevel;
+}
+
+var unstable_requestPaint = requestPaint;
+var unstable_Profiling =  {
+  startLoggingProfilingEvents: startLoggingProfilingEvents,
+  stopLoggingProfilingEvents: stopLoggingProfilingEvents,
+  sharedProfilingBuffer: sharedProfilingBuffer
+} ;
+
+exports.unstable_IdlePriority = IdlePriority;
+exports.unstable_ImmediatePriority = ImmediatePriority;
+exports.unstable_LowPriority = LowPriority;
+exports.unstable_NormalPriority = NormalPriority;
+exports.unstable_Profiling = unstable_Profiling;
+exports.unstable_UserBlockingPriority = UserBlockingPriority;
+exports.unstable_advanceTime = unstable_advanceTime;
+exports.unstable_cancelCallback = unstable_cancelCallback;
+exports.unstable_clearYields = unstable_clearYields;
+exports.unstable_continueExecution = unstable_continueExecution;
+exports.unstable_flushAll = unstable_flushAll;
+exports.unstable_flushAllWithoutAsserting = unstable_flushAllWithoutAsserting;
+exports.unstable_flushExpired = unstable_flushExpired;
+exports.unstable_flushNumberOfYields = unstable_flushNumberOfYields;
+exports.unstable_flushUntilNextPaint = unstable_flushUntilNextPaint;
+exports.unstable_forceFrameRate = forceFrameRate;
+exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
+exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
+exports.unstable_next = unstable_next;
+exports.unstable_now = getCurrentTime;
+exports.unstable_pauseExecution = unstable_pauseExecution;
+exports.unstable_requestPaint = unstable_requestPaint;
+exports.unstable_runWithPriority = unstable_runWithPriority;
+exports.unstable_scheduleCallback = unstable_scheduleCallback;
+exports.unstable_shouldYield = shouldYieldToHost;
+exports.unstable_wrapCallback = unstable_wrapCallback;
+exports.unstable_yieldValue = unstable_yieldValue;
+  })();
+}
diff --git a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_mock.production.min.js b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_mock.production.min.js
new file mode 100644
index 0000000000000..3970ae6029901
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_mock.production.min.js
@@ -0,0 +1,19 @@
+/** @license React v0.20.1
+ * scheduler-unstable_mock.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+'use strict';var f=0,g=null,h=null,k=-1,l=null,m=-1,n=!1,p=!1,q=!1,r=!1;function t(){return-1!==m&&null!==l&&l.length>=m||r&&q?n=!0:!1}function x(){if(p)throw Error("Already flushing work.");if(null!==g){var a=g;p=!0;try{var b=!0;do b=a(!0,f);while(b);b||(g=null);return!0}finally{p=!1}}else return!1}function z(a,b){var c=a.length;a.push(b);a:for(;;){var d=c-1>>>1,e=a[d];if(void 0!==e&&0<A(e,b))a[d]=b,a[c]=e,c=d;else break a}}function B(a){a=a[0];return void 0===a?null:a}
+function C(a){var b=a[0];if(void 0!==b){var c=a.pop();if(c!==b){a[0]=c;a:for(var d=0,e=a.length;d<e;){var u=2*(d+1)-1,v=a[u],w=u+1,y=a[w];if(void 0!==v&&0>A(v,c))void 0!==y&&0>A(y,v)?(a[d]=y,a[w]=c,d=w):(a[d]=v,a[u]=c,d=u);else if(void 0!==y&&0>A(y,c))a[d]=y,a[w]=c,d=w;else break a}}return b}return null}function A(a,b){var c=a.sortIndex-b.sortIndex;return 0!==c?c:a.id-b.id}var D=[],E=[],F=1,G=null,H=3,I=!1,J=!1,K=!1;
+function L(a){for(var b=B(E);null!==b;){if(null===b.callback)C(E);else if(b.startTime<=a)C(E),b.sortIndex=b.expirationTime,z(D,b);else break;b=B(E)}}function M(a){K=!1;L(a);if(!J)if(null!==B(D))J=!0,g=N;else{var b=B(E);null!==b&&(a=b.startTime-a,h=M,k=f+a)}}
+function N(a,b){J=!1;K&&(K=!1,h=null,k=-1);I=!0;var c=H;try{L(b);for(G=B(D);null!==G&&(!(G.expirationTime>b)||a&&!t());){var d=G.callback;if("function"===typeof d){G.callback=null;H=G.priorityLevel;var e=d(G.expirationTime<=b);b=f;"function"===typeof e?G.callback=e:G===B(D)&&C(D);L(b)}else C(D);G=B(D)}if(null!==G)var u=!0;else{var v=B(E);if(null!==v){var w=v.startTime-b;h=M;k=f+w}u=!1}return u}finally{G=null,H=c,I=!1}}exports.unstable_IdlePriority=5;exports.unstable_ImmediatePriority=1;
+exports.unstable_LowPriority=4;exports.unstable_NormalPriority=3;exports.unstable_Profiling=null;exports.unstable_UserBlockingPriority=2;exports.unstable_advanceTime=function(a){"disabledLog"!==console.log.name&&(f+=a,null!==h&&k<=f&&(h(f),k=-1,h=null))};exports.unstable_cancelCallback=function(a){a.callback=null};exports.unstable_clearYields=function(){if(null===l)return[];var a=l;l=null;return a};exports.unstable_continueExecution=function(){J||I||(J=!0,g=N)};
+exports.unstable_flushAll=function(){if(null!==l)throw Error("Log is not empty. Assert on the log of yielded values before flushing additional work.");x();if(null!==l)throw Error("While flushing work, something yielded a value. Use an assertion helper to assert on the log of yielded values, e.g. expect(Scheduler).toFlushAndYield([...])");};exports.unstable_flushAllWithoutAsserting=x;
+exports.unstable_flushExpired=function(){if(p)throw Error("Already flushing work.");if(null!==g){p=!0;try{g(!1,f)||(g=null)}finally{p=!1}}};exports.unstable_flushNumberOfYields=function(a){if(p)throw Error("Already flushing work.");if(null!==g){var b=g;m=a;p=!0;try{a=!0;do a=b(!0,f);while(a&&!n);a||(g=null)}finally{m=-1,p=n=!1}}};
+exports.unstable_flushUntilNextPaint=function(){if(p)throw Error("Already flushing work.");if(null!==g){var a=g;r=!0;q=!1;p=!0;try{var b=!0;do b=a(!0,f);while(b&&!n);b||(g=null)}finally{p=n=r=!1}}};exports.unstable_forceFrameRate=function(){};exports.unstable_getCurrentPriorityLevel=function(){return H};exports.unstable_getFirstCallbackNode=function(){return B(D)};exports.unstable_next=function(a){switch(H){case 1:case 2:case 3:var b=3;break;default:b=H}var c=H;H=b;try{return a()}finally{H=c}};
+exports.unstable_now=function(){return f};exports.unstable_pauseExecution=function(){};exports.unstable_requestPaint=function(){q=!0};exports.unstable_runWithPriority=function(a,b){switch(a){case 1:case 2:case 3:case 4:case 5:break;default:a=3}var c=H;H=a;try{return b()}finally{H=c}};
+exports.unstable_scheduleCallback=function(a,b,c){var d=f;"object"===typeof c&&null!==c?(c=c.delay,c="number"===typeof c&&0<c?d+c:d):c=d;switch(a){case 1:var e=-1;break;case 2:e=250;break;case 5:e=1073741823;break;case 4:e=1E4;break;default:e=5E3}e=c+e;a={id:F++,callback:b,priorityLevel:a,startTime:c,expirationTime:e,sortIndex:-1};c>d?(a.sortIndex=c,z(E,a),null===B(D)&&a===B(E)&&(K?(h=null,k=-1):K=!0,h=M,k=f+(c-d))):(a.sortIndex=e,z(D,a),J||I||(J=!0,g=N));return a};exports.unstable_shouldYield=t;
+exports.unstable_wrapCallback=function(a){var b=H;return function(){var c=H;H=b;try{return a.apply(this,arguments)}finally{H=c}}};exports.unstable_yieldValue=function(a){"disabledLog"!==console.log.name&&(null===l?l=[a]:l.push(a))};
diff --git a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_post_task.development.js b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_post_task.development.js
new file mode 100644
index 0000000000000..6fc7ed7c8c886
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_post_task.development.js
@@ -0,0 +1,206 @@
+/** @license React v0.20.1
+ * scheduler-unstable_post_task.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+// TODO: Use symbols?
+var ImmediatePriority = 1;
+var UserBlockingPriority = 2;
+var NormalPriority = 3;
+var LowPriority = 4;
+var IdlePriority = 5;
+
+var perf = window.performance;
+var setTimeout = window.setTimeout; // Use experimental Chrome Scheduler postTask API.
+
+var scheduler = global.scheduler;
+var getCurrentTime = perf.now.bind(perf);
+var unstable_now = getCurrentTime; // Scheduler periodically yields in case there is other work on the main
+// thread, like user events. By default, it yields multiple times per frame.
+// It does not attempt to align with frame boundaries, since most tasks don't
+// need to be frame aligned; for those that do, use requestAnimationFrame.
+
+var yieldInterval = 5;
+var deadline = 0;
+var currentPriorityLevel_DEPRECATED = NormalPriority; // `isInputPending` is not available. Since we have no way of knowing if
+// there's pending input, always yield at the end of the frame.
+
+function unstable_shouldYield() {
+  return getCurrentTime() >= deadline;
+}
+function unstable_requestPaint() {// Since we yield every frame regardless, `requestPaint` has no effect.
+}
+function unstable_scheduleCallback(priorityLevel, callback, options) {
+  var postTaskPriority;
+
+  switch (priorityLevel) {
+    case ImmediatePriority:
+    case UserBlockingPriority:
+      postTaskPriority = 'user-blocking';
+      break;
+
+    case LowPriority:
+    case NormalPriority:
+      postTaskPriority = 'user-visible';
+      break;
+
+    case IdlePriority:
+      postTaskPriority = 'background';
+      break;
+
+    default:
+      postTaskPriority = 'user-visible';
+      break;
+  }
+
+  var controller = new TaskController();
+  var postTaskOptions = {
+    priority: postTaskPriority,
+    delay: typeof options === 'object' && options !== null ? options.delay : 0,
+    signal: controller.signal
+  };
+  var node = {
+    _controller: controller
+  };
+  scheduler.postTask(runTask.bind(null, priorityLevel, postTaskPriority, node, callback), postTaskOptions).catch(handleAbortError);
+  return node;
+}
+
+function runTask(priorityLevel, postTaskPriority, node, callback) {
+  deadline = getCurrentTime() + yieldInterval;
+
+  try {
+    currentPriorityLevel_DEPRECATED = priorityLevel;
+    var _didTimeout_DEPRECATED = false;
+    var result = callback(_didTimeout_DEPRECATED);
+
+    if (typeof result === 'function') {
+      // Assume this is a continuation
+      var continuation = result;
+      var continuationController = new TaskController();
+      var continuationOptions = {
+        priority: postTaskPriority,
+        signal: continuationController.signal
+      }; // Update the original callback node's controller, since even though we're
+      // posting a new task, conceptually it's the same one.
+
+      node._controller = continuationController;
+      scheduler.postTask(runTask.bind(null, priorityLevel, postTaskPriority, node, continuation), continuationOptions).catch(handleAbortError);
+    }
+  } catch (error) {
+    // We're inside a `postTask` promise. If we don't handle this error, then it
+    // will trigger an "Unhandled promise rejection" error. We don't want that,
+    // but we do want the default error reporting behavior that normal
+    // (non-Promise) tasks get for unhandled errors.
+    //
+    // So we'll re-throw the error inside a regular browser task.
+    setTimeout(function () {
+      throw error;
+    });
+  } finally {
+    currentPriorityLevel_DEPRECATED = NormalPriority;
+  }
+}
+
+function handleAbortError(error) {// Abort errors are an implementation detail. We don't expose the
+  // TaskController to the user, nor do we expose the promise that is returned
+  // from `postTask`. So we should suppress them, since there's no way for the
+  // user to handle them.
+}
+
+function unstable_cancelCallback(node) {
+  var controller = node._controller;
+  controller.abort();
+}
+function unstable_runWithPriority(priorityLevel, callback) {
+  var previousPriorityLevel = currentPriorityLevel_DEPRECATED;
+  currentPriorityLevel_DEPRECATED = priorityLevel;
+
+  try {
+    return callback();
+  } finally {
+    currentPriorityLevel_DEPRECATED = previousPriorityLevel;
+  }
+}
+function unstable_getCurrentPriorityLevel() {
+  return currentPriorityLevel_DEPRECATED;
+}
+function unstable_next(callback) {
+  var priorityLevel;
+
+  switch (currentPriorityLevel_DEPRECATED) {
+    case ImmediatePriority:
+    case UserBlockingPriority:
+    case NormalPriority:
+      // Shift down to normal priority
+      priorityLevel = NormalPriority;
+      break;
+
+    default:
+      // Anything lower than normal priority should remain at the current level.
+      priorityLevel = currentPriorityLevel_DEPRECATED;
+      break;
+  }
+
+  var previousPriorityLevel = currentPriorityLevel_DEPRECATED;
+  currentPriorityLevel_DEPRECATED = priorityLevel;
+
+  try {
+    return callback();
+  } finally {
+    currentPriorityLevel_DEPRECATED = previousPriorityLevel;
+  }
+}
+function unstable_wrapCallback(callback) {
+  var parentPriorityLevel = currentPriorityLevel_DEPRECATED;
+  return function () {
+    var previousPriorityLevel = currentPriorityLevel_DEPRECATED;
+    currentPriorityLevel_DEPRECATED = parentPriorityLevel;
+
+    try {
+      return callback();
+    } finally {
+      currentPriorityLevel_DEPRECATED = previousPriorityLevel;
+    }
+  };
+}
+function unstable_forceFrameRate() {}
+function unstable_pauseExecution() {}
+function unstable_continueExecution() {}
+function unstable_getFirstCallbackNode() {
+  return null;
+} // Currently no profiling build
+
+var unstable_Profiling = null;
+
+exports.unstable_IdlePriority = IdlePriority;
+exports.unstable_ImmediatePriority = ImmediatePriority;
+exports.unstable_LowPriority = LowPriority;
+exports.unstable_NormalPriority = NormalPriority;
+exports.unstable_Profiling = unstable_Profiling;
+exports.unstable_UserBlockingPriority = UserBlockingPriority;
+exports.unstable_cancelCallback = unstable_cancelCallback;
+exports.unstable_continueExecution = unstable_continueExecution;
+exports.unstable_forceFrameRate = unstable_forceFrameRate;
+exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
+exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
+exports.unstable_next = unstable_next;
+exports.unstable_now = unstable_now;
+exports.unstable_pauseExecution = unstable_pauseExecution;
+exports.unstable_requestPaint = unstable_requestPaint;
+exports.unstable_runWithPriority = unstable_runWithPriority;
+exports.unstable_scheduleCallback = unstable_scheduleCallback;
+exports.unstable_shouldYield = unstable_shouldYield;
+exports.unstable_wrapCallback = unstable_wrapCallback;
+  })();
+}
diff --git a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_post_task.production.min.js b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_post_task.production.min.js
new file mode 100644
index 0000000000000..388a1b9225043
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_post_task.production.min.js
@@ -0,0 +1,13 @@
+/** @license React v0.20.1
+ * scheduler-unstable_post_task.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+'use strict';var a=window.performance,g=window.setTimeout,h=global.scheduler,k=a.now.bind(a),l=0,m=3;function p(c,d,b,f){l=k()+5;try{m=c;var e=f(!1);if("function"===typeof e){var n=new TaskController,r={priority:d,signal:n.signal};b._controller=n;h.postTask(p.bind(null,c,d,b,e),r).catch(q)}}catch(t){g(function(){throw t;})}finally{m=3}}function q(){}exports.unstable_IdlePriority=5;exports.unstable_ImmediatePriority=1;exports.unstable_LowPriority=4;exports.unstable_NormalPriority=3;
+exports.unstable_Profiling=null;exports.unstable_UserBlockingPriority=2;exports.unstable_cancelCallback=function(c){c._controller.abort()};exports.unstable_continueExecution=function(){};exports.unstable_forceFrameRate=function(){};exports.unstable_getCurrentPriorityLevel=function(){return m};exports.unstable_getFirstCallbackNode=function(){return null};exports.unstable_next=function(c){switch(m){case 1:case 2:case 3:var d=3;break;default:d=m}var b=m;m=d;try{return c()}finally{m=b}};
+exports.unstable_now=k;exports.unstable_pauseExecution=function(){};exports.unstable_requestPaint=function(){};exports.unstable_runWithPriority=function(c,d){var b=m;m=c;try{return d()}finally{m=b}};
+exports.unstable_scheduleCallback=function(c,d,b){switch(c){case 1:case 2:var f="user-blocking";break;case 4:case 3:f="user-visible";break;case 5:f="background";break;default:f="user-visible"}var e=new TaskController;b={priority:f,delay:"object"===typeof b&&null!==b?b.delay:0,signal:e.signal};e={_controller:e};h.postTask(p.bind(null,c,f,e,d),b).catch(q);return e};exports.unstable_shouldYield=function(){return k()>=l};
+exports.unstable_wrapCallback=function(c){var d=m;return function(){var b=m;m=d;try{return c()}finally{m=b}}};
diff --git a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler.development.js b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler.development.js
new file mode 100644
index 0000000000000..1ca8c952c80a6
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler.development.js
@@ -0,0 +1,845 @@
+/** @license React v0.20.1
+ * scheduler.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+console.log('WRONG')
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+var enableSchedulerDebugging = false;
+var enableProfiling = true;
+
+var requestHostCallback;
+var requestHostTimeout;
+var cancelHostTimeout;
+var requestPaint;
+var hasPerformanceNow = typeof performance === 'object' && typeof performance.now === 'function';
+
+if (hasPerformanceNow) {
+  var localPerformance = performance;
+
+  exports.unstable_now = function () {
+    return localPerformance.now();
+  };
+} else {
+  var localDate = Date;
+  var initialTime = localDate.now();
+
+  exports.unstable_now = function () {
+    return localDate.now() - initialTime;
+  };
+}
+
+if ( // If Scheduler runs in a non-DOM environment, it falls back to a naive
+// implementation using setTimeout.
+typeof window === 'undefined' || // Check if MessageChannel is supported, too.
+typeof MessageChannel !== 'function') {
+  // If this accidentally gets imported in a non-browser environment, e.g. JavaScriptCore,
+  // fallback to a naive implementation.
+  var _callback = null;
+  var _timeoutID = null;
+
+  var _flushCallback = function () {
+    if (_callback !== null) {
+      try {
+        var currentTime = exports.unstable_now();
+        var hasRemainingTime = true;
+
+        _callback(hasRemainingTime, currentTime);
+
+        _callback = null;
+      } catch (e) {
+        setTimeout(_flushCallback, 0);
+        throw e;
+      }
+    }
+  };
+
+  requestHostCallback = function (cb) {
+    if (_callback !== null) {
+      // Protect against re-entrancy.
+      setTimeout(requestHostCallback, 0, cb);
+    } else {
+      _callback = cb;
+      setTimeout(_flushCallback, 0);
+    }
+  };
+
+  requestHostTimeout = function (cb, ms) {
+    _timeoutID = setTimeout(cb, ms);
+  };
+
+  cancelHostTimeout = function () {
+    clearTimeout(_timeoutID);
+  };
+
+  exports.unstable_shouldYield = function () {
+    return false;
+  };
+
+  requestPaint = exports.unstable_forceFrameRate = function () {};
+} else {
+  // Capture local references to native APIs, in case a polyfill overrides them.
+  var _setTimeout = window.setTimeout;
+  var _clearTimeout = window.clearTimeout;
+
+  if (typeof console !== 'undefined') {
+    // TODO: Scheduler no longer requires these methods to be polyfilled. But
+    // maybe we want to continue warning if they don't exist, to preserve the
+    // option to rely on it in the future?
+    var requestAnimationFrame = window.requestAnimationFrame;
+    var cancelAnimationFrame = window.cancelAnimationFrame;
+
+    if (typeof requestAnimationFrame !== 'function') {
+      // Using console['error'] to evade Babel and ESLint
+      console['error']("This browser doesn't support requestAnimationFrame. " + 'Make sure that you load a ' + 'polyfill in older browsers. https://reactjs.org/link/react-polyfills');
+    }
+
+    if (typeof cancelAnimationFrame !== 'function') {
+      // Using console['error'] to evade Babel and ESLint
+      console['error']("This browser doesn't support cancelAnimationFrame. " + 'Make sure that you load a ' + 'polyfill in older browsers. https://reactjs.org/link/react-polyfills');
+    }
+  }
+
+  var isMessageLoopRunning = false;
+  var scheduledHostCallback = null;
+  var taskTimeoutID = -1; // Scheduler periodically yields in case there is other work on the main
+  // thread, like user events. By default, it yields multiple times per frame.
+  // It does not attempt to align with frame boundaries, since most tasks don't
+  // need to be frame aligned; for those that do, use requestAnimationFrame.
+
+  var yieldInterval = 5;
+  var deadline = 0; // TODO: Make this configurable
+
+  {
+    // `isInputPending` is not available. Since we have no way of knowing if
+    // there's pending input, always yield at the end of the frame.
+    exports.unstable_shouldYield = function () {
+      return exports.unstable_now() >= deadline;
+    }; // Since we yield every frame regardless, `requestPaint` has no effect.
+
+
+    requestPaint = function () {};
+  }
+
+  exports.unstable_forceFrameRate = function (fps) {
+    if (fps < 0 || fps > 125) {
+      // Using console['error'] to evade Babel and ESLint
+      console['error']('forceFrameRate takes a positive int between 0 and 125, ' + 'forcing frame rates higher than 125 fps is not supported');
+      return;
+    }
+
+    if (fps > 0) {
+      yieldInterval = Math.floor(1000 / fps);
+    } else {
+      // reset the framerate
+      yieldInterval = 5;
+    }
+  };
+
+  var performWorkUntilDeadline = function () {
+    if (scheduledHostCallback !== null) {
+      var currentTime = exports.unstable_now(); // Yield after `yieldInterval` ms, regardless of where we are in the vsync
+      // cycle. This means there's always time remaining at the beginning of
+      // the message event.
+
+      deadline = currentTime + yieldInterval;
+      var hasTimeRemaining = true;
+
+      try {
+        var hasMoreWork = scheduledHostCallback(hasTimeRemaining, currentTime);
+
+        if (!hasMoreWork) {
+          isMessageLoopRunning = false;
+          scheduledHostCallback = null;
+        } else {
+          // If there's more work, schedule the next message event at the end
+          // of the preceding one.
+          port.postMessage(null);
+        }
+      } catch (error) {
+        // If a scheduler task throws, exit the current browser task so the
+        // error can be observed.
+        port.postMessage(null);
+        throw error;
+      }
+    } else {
+      isMessageLoopRunning = false;
+    } // Yielding to the browser will give it a chance to paint, so we can
+  };
+
+  var channel = new MessageChannel();
+  var port = channel.port2;
+  channel.port1.onmessage = performWorkUntilDeadline;
+
+  requestHostCallback = function (callback) {
+    scheduledHostCallback = callback;
+
+    if (!isMessageLoopRunning) {
+      isMessageLoopRunning = true;
+      port.postMessage(null);
+    }
+  };
+
+  requestHostTimeout = function (callback, ms) {
+    taskTimeoutID = _setTimeout(function () {
+      callback(exports.unstable_now());
+    }, ms);
+  };
+
+  cancelHostTimeout = function () {
+    _clearTimeout(taskTimeoutID);
+
+    taskTimeoutID = -1;
+  };
+}
+
+function push(heap, node) {
+  var index = heap.length;
+  heap.push(node);
+  siftUp(heap, node, index);
+}
+function peek(heap) {
+  var first = heap[0];
+  return first === undefined ? null : first;
+}
+function pop(heap) {
+  var first = heap[0];
+
+  if (first !== undefined) {
+    var last = heap.pop();
+
+    if (last !== first) {
+      heap[0] = last;
+      siftDown(heap, last, 0);
+    }
+
+    return first;
+  } else {
+    return null;
+  }
+}
+
+function siftUp(heap, node, i) {
+  var index = i;
+
+  while (true) {
+    var parentIndex = index - 1 >>> 1;
+    var parent = heap[parentIndex];
+
+    if (parent !== undefined && compare(parent, node) > 0) {
+      // The parent is larger. Swap positions.
+      heap[parentIndex] = node;
+      heap[index] = parent;
+      index = parentIndex;
+    } else {
+      // The parent is smaller. Exit.
+      return;
+    }
+  }
+}
+
+function siftDown(heap, node, i) {
+  var index = i;
+  var length = heap.length;
+
+  while (index < length) {
+    var leftIndex = (index + 1) * 2 - 1;
+    var left = heap[leftIndex];
+    var rightIndex = leftIndex + 1;
+    var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those.
+
+    if (left !== undefined && compare(left, node) < 0) {
+      if (right !== undefined && compare(right, left) < 0) {
+        heap[index] = right;
+        heap[rightIndex] = node;
+        index = rightIndex;
+      } else {
+        heap[index] = left;
+        heap[leftIndex] = node;
+        index = leftIndex;
+      }
+    } else if (right !== undefined && compare(right, node) < 0) {
+      heap[index] = right;
+      heap[rightIndex] = node;
+      index = rightIndex;
+    } else {
+      // Neither child is smaller. Exit.
+      return;
+    }
+  }
+}
+
+function compare(a, b) {
+  // Compare sort index first, then task id.
+  var diff = a.sortIndex - b.sortIndex;
+  return diff !== 0 ? diff : a.id - b.id;
+}
+
+// TODO: Use symbols?
+var NoPriority = 0;
+var ImmediatePriority = 1;
+var UserBlockingPriority = 2;
+var NormalPriority = 3;
+var LowPriority = 4;
+var IdlePriority = 5;
+
+var runIdCounter = 0;
+var mainThreadIdCounter = 0;
+var profilingStateSize = 4;
+var sharedProfilingBuffer =  // $FlowFixMe Flow doesn't know about SharedArrayBuffer
+typeof SharedArrayBuffer === 'function' ? new SharedArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : // $FlowFixMe Flow doesn't know about ArrayBuffer
+typeof ArrayBuffer === 'function' ? new ArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : null // Don't crash the init path on IE9
+;
+var profilingState =  sharedProfilingBuffer !== null ? new Int32Array(sharedProfilingBuffer) : []; // We can't read this but it helps save bytes for null checks
+
+var PRIORITY = 0;
+var CURRENT_TASK_ID = 1;
+var CURRENT_RUN_ID = 2;
+var QUEUE_SIZE = 3;
+
+{
+  profilingState[PRIORITY] = NoPriority; // This is maintained with a counter, because the size of the priority queue
+  // array might include canceled tasks.
+
+  profilingState[QUEUE_SIZE] = 0;
+  profilingState[CURRENT_TASK_ID] = 0;
+} // Bytes per element is 4
+
+
+var INITIAL_EVENT_LOG_SIZE = 131072;
+var MAX_EVENT_LOG_SIZE = 524288; // Equivalent to 2 megabytes
+
+var eventLogSize = 0;
+var eventLogBuffer = null;
+var eventLog = null;
+var eventLogIndex = 0;
+var TaskStartEvent = 1;
+var TaskCompleteEvent = 2;
+var TaskErrorEvent = 3;
+var TaskCancelEvent = 4;
+var TaskRunEvent = 5;
+var TaskYieldEvent = 6;
+var SchedulerSuspendEvent = 7;
+var SchedulerResumeEvent = 8;
+
+function logEvent(entries) {
+  if (eventLog !== null) {
+    var offset = eventLogIndex;
+    eventLogIndex += entries.length;
+
+    if (eventLogIndex + 1 > eventLogSize) {
+      eventLogSize *= 2;
+
+      if (eventLogSize > MAX_EVENT_LOG_SIZE) {
+        // Using console['error'] to evade Babel and ESLint
+        console['error']("Scheduler Profiling: Event log exceeded maximum size. Don't " + 'forget to call `stopLoggingProfilingEvents()`.');
+        stopLoggingProfilingEvents();
+        return;
+      }
+
+      var newEventLog = new Int32Array(eventLogSize * 4);
+      newEventLog.set(eventLog);
+      eventLogBuffer = newEventLog.buffer;
+      eventLog = newEventLog;
+    }
+
+    eventLog.set(entries, offset);
+  }
+}
+
+function startLoggingProfilingEvents() {
+  eventLogSize = INITIAL_EVENT_LOG_SIZE;
+  eventLogBuffer = new ArrayBuffer(eventLogSize * 4);
+  eventLog = new Int32Array(eventLogBuffer);
+  eventLogIndex = 0;
+}
+function stopLoggingProfilingEvents() {
+  var buffer = eventLogBuffer;
+  eventLogSize = 0;
+  eventLogBuffer = null;
+  eventLog = null;
+  eventLogIndex = 0;
+  return buffer;
+}
+function markTaskStart(task, ms) {
+  {
+    profilingState[QUEUE_SIZE]++;
+
+    if (eventLog !== null) {
+      // performance.now returns a float, representing milliseconds. When the
+      // event is logged, it's coerced to an int. Convert to microseconds to
+      // maintain extra degrees of precision.
+      logEvent([TaskStartEvent, ms * 1000, task.id, task.priorityLevel]);
+    }
+  }
+}
+function markTaskCompleted(task, ms) {
+  {
+    profilingState[PRIORITY] = NoPriority;
+    profilingState[CURRENT_TASK_ID] = 0;
+    profilingState[QUEUE_SIZE]--;
+
+    if (eventLog !== null) {
+      logEvent([TaskCompleteEvent, ms * 1000, task.id]);
+    }
+  }
+}
+function markTaskCanceled(task, ms) {
+  {
+    profilingState[QUEUE_SIZE]--;
+
+    if (eventLog !== null) {
+      logEvent([TaskCancelEvent, ms * 1000, task.id]);
+    }
+  }
+}
+function markTaskErrored(task, ms) {
+  {
+    profilingState[PRIORITY] = NoPriority;
+    profilingState[CURRENT_TASK_ID] = 0;
+    profilingState[QUEUE_SIZE]--;
+
+    if (eventLog !== null) {
+      logEvent([TaskErrorEvent, ms * 1000, task.id]);
+    }
+  }
+}
+function markTaskRun(task, ms) {
+  {
+    runIdCounter++;
+    profilingState[PRIORITY] = task.priorityLevel;
+    profilingState[CURRENT_TASK_ID] = task.id;
+    profilingState[CURRENT_RUN_ID] = runIdCounter;
+
+    if (eventLog !== null) {
+      logEvent([TaskRunEvent, ms * 1000, task.id, runIdCounter]);
+    }
+  }
+}
+function markTaskYield(task, ms) {
+  {
+    profilingState[PRIORITY] = NoPriority;
+    profilingState[CURRENT_TASK_ID] = 0;
+    profilingState[CURRENT_RUN_ID] = 0;
+
+    if (eventLog !== null) {
+      logEvent([TaskYieldEvent, ms * 1000, task.id, runIdCounter]);
+    }
+  }
+}
+function markSchedulerSuspended(ms) {
+  {
+    mainThreadIdCounter++;
+
+    if (eventLog !== null) {
+      logEvent([SchedulerSuspendEvent, ms * 1000, mainThreadIdCounter]);
+    }
+  }
+}
+function markSchedulerUnsuspended(ms) {
+  {
+    if (eventLog !== null) {
+      logEvent([SchedulerResumeEvent, ms * 1000, mainThreadIdCounter]);
+    }
+  }
+}
+
+/* eslint-disable no-var */
+// Math.pow(2, 30) - 1
+// 0b111111111111111111111111111111
+
+var maxSigned31BitInt = 1073741823; // Times out immediately
+
+var IMMEDIATE_PRIORITY_TIMEOUT = -1; // Eventually times out
+
+var USER_BLOCKING_PRIORITY_TIMEOUT = 250;
+var NORMAL_PRIORITY_TIMEOUT = 5000;
+var LOW_PRIORITY_TIMEOUT = 10000; // Never times out
+
+var IDLE_PRIORITY_TIMEOUT = maxSigned31BitInt; // Tasks are stored on a min heap
+
+var taskQueue = [];
+var timerQueue = []; // Incrementing id counter. Used to maintain insertion order.
+
+var taskIdCounter = 1; // Pausing the scheduler is useful for debugging.
+var currentTask = null;
+var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrancy.
+
+var isPerformingWork = false;
+var isHostCallbackScheduled = false;
+var isHostTimeoutScheduled = false;
+
+function advanceTimers(currentTime) {
+  // Check for tasks that are no longer delayed and add them to the queue.
+  var timer = peek(timerQueue);
+
+  while (timer !== null) {
+    if (timer.callback === null) {
+      // Timer was cancelled.
+      pop(timerQueue);
+    } else if (timer.startTime <= currentTime) {
+      // Timer fired. Transfer to the task queue.
+      pop(timerQueue);
+      timer.sortIndex = timer.expirationTime;
+      push(taskQueue, timer);
+
+      {
+        markTaskStart(timer, currentTime);
+        timer.isQueued = true;
+      }
+    } else {
+      // Remaining timers are pending.
+      return;
+    }
+
+    timer = peek(timerQueue);
+  }
+}
+
+function handleTimeout(currentTime) {
+  isHostTimeoutScheduled = false;
+  advanceTimers(currentTime);
+
+  if (!isHostCallbackScheduled) {
+    if (peek(taskQueue) !== null) {
+      isHostCallbackScheduled = true;
+      requestHostCallback(flushWork);
+    } else {
+      var firstTimer = peek(timerQueue);
+
+      if (firstTimer !== null) {
+        requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
+      }
+    }
+  }
+}
+
+function flushWork(hasTimeRemaining, initialTime) {
+  {
+    markSchedulerUnsuspended(initialTime);
+  } // We'll need a host callback the next time work is scheduled.
+
+
+  isHostCallbackScheduled = false;
+
+  if (isHostTimeoutScheduled) {
+    // We scheduled a timeout but it's no longer needed. Cancel it.
+    isHostTimeoutScheduled = false;
+    cancelHostTimeout();
+  }
+
+  isPerformingWork = true;
+  var previousPriorityLevel = currentPriorityLevel;
+
+  try {
+    if (enableProfiling) {
+      try {
+        return workLoop(hasTimeRemaining, initialTime);
+      } catch (error) {
+        if (currentTask !== null) {
+          var currentTime = exports.unstable_now();
+          markTaskErrored(currentTask, currentTime);
+          currentTask.isQueued = false;
+        }
+
+        throw error;
+      }
+    } else {
+      // No catch in prod code path.
+      return workLoop(hasTimeRemaining, initialTime);
+    }
+  } finally {
+    currentTask = null;
+    currentPriorityLevel = previousPriorityLevel;
+    isPerformingWork = false;
+
+    {
+      var _currentTime = exports.unstable_now();
+
+      markSchedulerSuspended(_currentTime);
+    }
+  }
+}
+
+function workLoop(hasTimeRemaining, initialTime) {
+  var currentTime = initialTime;
+  advanceTimers(currentTime);
+  currentTask = peek(taskQueue);
+
+  while (currentTask !== null && !(enableSchedulerDebugging )) {
+    if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || exports.unstable_shouldYield())) {
+      // This currentTask hasn't expired, and we've reached the deadline.
+      break;
+    }
+
+    var callback = currentTask.callback;
+
+    if (typeof callback === 'function') {
+      currentTask.callback = null;
+      currentPriorityLevel = currentTask.priorityLevel;
+      var didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
+      markTaskRun(currentTask, currentTime);
+      var continuationCallback = callback(didUserCallbackTimeout);
+      currentTime = exports.unstable_now();
+
+      if (typeof continuationCallback === 'function') {
+        currentTask.callback = continuationCallback;
+        markTaskYield(currentTask, currentTime);
+      } else {
+        {
+          markTaskCompleted(currentTask, currentTime);
+          currentTask.isQueued = false;
+        }
+
+        if (currentTask === peek(taskQueue)) {
+          pop(taskQueue);
+        }
+      }
+
+      advanceTimers(currentTime);
+    } else {
+      pop(taskQueue);
+    }
+
+    currentTask = peek(taskQueue);
+  } // Return whether there's additional work
+
+
+  if (currentTask !== null) {
+    return true;
+  } else {
+    var firstTimer = peek(timerQueue);
+
+    if (firstTimer !== null) {
+      requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
+    }
+
+    return false;
+  }
+}
+
+function unstable_runWithPriority(priorityLevel, eventHandler) {
+  switch (priorityLevel) {
+    case ImmediatePriority:
+    case UserBlockingPriority:
+    case NormalPriority:
+    case LowPriority:
+    case IdlePriority:
+      break;
+
+    default:
+      priorityLevel = NormalPriority;
+  }
+
+  var previousPriorityLevel = currentPriorityLevel;
+  currentPriorityLevel = priorityLevel;
+
+  try {
+    return eventHandler();
+  } finally {
+    currentPriorityLevel = previousPriorityLevel;
+  }
+}
+
+function unstable_next(eventHandler) {
+  var priorityLevel;
+
+  switch (currentPriorityLevel) {
+    case ImmediatePriority:
+    case UserBlockingPriority:
+    case NormalPriority:
+      // Shift down to normal priority
+      priorityLevel = NormalPriority;
+      break;
+
+    default:
+      // Anything lower than normal priority should remain at the current level.
+      priorityLevel = currentPriorityLevel;
+      break;
+  }
+
+  var previousPriorityLevel = currentPriorityLevel;
+  currentPriorityLevel = priorityLevel;
+
+  try {
+    return eventHandler();
+  } finally {
+    currentPriorityLevel = previousPriorityLevel;
+  }
+}
+
+function unstable_wrapCallback(callback) {
+  var parentPriorityLevel = currentPriorityLevel;
+  return function () {
+    // This is a fork of runWithPriority, inlined for performance.
+    var previousPriorityLevel = currentPriorityLevel;
+    currentPriorityLevel = parentPriorityLevel;
+
+    try {
+      return callback.apply(this, arguments);
+    } finally {
+      currentPriorityLevel = previousPriorityLevel;
+    }
+  };
+}
+
+function unstable_scheduleCallback(priorityLevel, callback, options) {
+  var currentTime = exports.unstable_now();
+  var startTime;
+
+  if (typeof options === 'object' && options !== null) {
+    var delay = options.delay;
+
+    if (typeof delay === 'number' && delay > 0) {
+      startTime = currentTime + delay;
+    } else {
+      startTime = currentTime;
+    }
+  } else {
+    startTime = currentTime;
+  }
+
+  var timeout;
+
+  switch (priorityLevel) {
+    case ImmediatePriority:
+      timeout = IMMEDIATE_PRIORITY_TIMEOUT;
+      break;
+
+    case UserBlockingPriority:
+      timeout = USER_BLOCKING_PRIORITY_TIMEOUT;
+      break;
+
+    case IdlePriority:
+      timeout = IDLE_PRIORITY_TIMEOUT;
+      break;
+
+    case LowPriority:
+      timeout = LOW_PRIORITY_TIMEOUT;
+      break;
+
+    case NormalPriority:
+    default:
+      timeout = NORMAL_PRIORITY_TIMEOUT;
+      break;
+  }
+
+  var expirationTime = startTime + timeout;
+  var newTask = {
+    id: taskIdCounter++,
+    callback: callback,
+    priorityLevel: priorityLevel,
+    startTime: startTime,
+    expirationTime: expirationTime,
+    sortIndex: -1
+  };
+
+  {
+    newTask.isQueued = false;
+  }
+
+  if (startTime > currentTime) {
+    // This is a delayed task.
+    newTask.sortIndex = startTime;
+    push(timerQueue, newTask);
+
+    if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
+      // All tasks are delayed, and this is the task with the earliest delay.
+      if (isHostTimeoutScheduled) {
+        // Cancel an existing timeout.
+        cancelHostTimeout();
+      } else {
+        isHostTimeoutScheduled = true;
+      } // Schedule a timeout.
+
+
+      requestHostTimeout(handleTimeout, startTime - currentTime);
+    }
+  } else {
+    newTask.sortIndex = expirationTime;
+    push(taskQueue, newTask);
+
+    {
+      markTaskStart(newTask, currentTime);
+      newTask.isQueued = true;
+    } // Schedule a host callback, if needed. If we're already performing work,
+    // wait until the next time we yield.
+
+
+    if (!isHostCallbackScheduled && !isPerformingWork) {
+      isHostCallbackScheduled = true;
+      requestHostCallback(flushWork);
+    }
+  }
+
+  return newTask;
+}
+
+function unstable_pauseExecution() {
+}
+
+function unstable_continueExecution() {
+
+  if (!isHostCallbackScheduled && !isPerformingWork) {
+    isHostCallbackScheduled = true;
+    requestHostCallback(flushWork);
+  }
+}
+
+function unstable_getFirstCallbackNode() {
+  return peek(taskQueue);
+}
+
+function unstable_cancelCallback(task) {
+  {
+    if (task.isQueued) {
+      var currentTime = exports.unstable_now();
+      markTaskCanceled(task, currentTime);
+      task.isQueued = false;
+    }
+  } // Null out the callback to indicate the task has been canceled. (Can't
+  // remove from the queue because you can't remove arbitrary nodes from an
+  // array based heap, only the first one.)
+
+
+  task.callback = null;
+}
+
+function unstable_getCurrentPriorityLevel() {
+  return currentPriorityLevel;
+}
+
+var unstable_requestPaint = requestPaint;
+var unstable_Profiling =  {
+  startLoggingProfilingEvents: startLoggingProfilingEvents,
+  stopLoggingProfilingEvents: stopLoggingProfilingEvents,
+  sharedProfilingBuffer: sharedProfilingBuffer
+} ;
+
+exports.unstable_IdlePriority = IdlePriority;
+exports.unstable_ImmediatePriority = ImmediatePriority;
+exports.unstable_LowPriority = LowPriority;
+exports.unstable_NormalPriority = NormalPriority;
+exports.unstable_Profiling = unstable_Profiling;
+exports.unstable_UserBlockingPriority = UserBlockingPriority;
+exports.unstable_cancelCallback = unstable_cancelCallback;
+exports.unstable_continueExecution = unstable_continueExecution;
+exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
+exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
+exports.unstable_next = unstable_next;
+exports.unstable_pauseExecution = unstable_pauseExecution;
+exports.unstable_requestPaint = unstable_requestPaint;
+exports.unstable_runWithPriority = unstable_runWithPriority;
+exports.unstable_scheduleCallback = unstable_scheduleCallback;
+exports.unstable_wrapCallback = unstable_wrapCallback;
+  })();
+}
diff --git a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler.production.min.js b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler.production.min.js
new file mode 100644
index 0000000000000..904ed26e322dc
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler.production.min.js
@@ -0,0 +1,20 @@
+/** @license React v0.20.1
+ * scheduler.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+'use strict';var f,g,h,k;if("object"===typeof performance&&"function"===typeof performance.now){var l=performance;exports.unstable_now=function(){return l.now()}}else{var p=Date,q=p.now();exports.unstable_now=function(){return p.now()-q}}
+if("undefined"===typeof window||"function"!==typeof MessageChannel){var t=null,u=null,w=function(){if(null!==t)try{var a=exports.unstable_now();t(!0,a);t=null}catch(b){throw setTimeout(w,0),b;}};f=function(a){null!==t?setTimeout(f,0,a):(t=a,setTimeout(w,0))};g=function(a,b){u=setTimeout(a,b)};h=function(){clearTimeout(u)};exports.unstable_shouldYield=function(){return!1};k=exports.unstable_forceFrameRate=function(){}}else{var x=window.setTimeout,y=window.clearTimeout;if("undefined"!==typeof console){var z=
+window.cancelAnimationFrame;"function"!==typeof window.requestAnimationFrame&&console.error("This browser doesn't support requestAnimationFrame. Make sure that you load a polyfill in older browsers. https://reactjs.org/link/react-polyfills");"function"!==typeof z&&console.error("This browser doesn't support cancelAnimationFrame. Make sure that you load a polyfill in older browsers. https://reactjs.org/link/react-polyfills")}var A=!1,B=null,C=-1,D=5,E=0;exports.unstable_shouldYield=function(){return exports.unstable_now()>=
+E};k=function(){};exports.unstable_forceFrameRate=function(a){0>a||125<a?console.error("forceFrameRate takes a positive int between 0 and 125, forcing frame rates higher than 125 fps is not supported"):D=0<a?Math.floor(1E3/a):5};var F=new MessageChannel,G=F.port2;F.port1.onmessage=function(){if(null!==B){var a=exports.unstable_now();E=a+D;try{B(!0,a)?G.postMessage(null):(A=!1,B=null)}catch(b){throw G.postMessage(null),b;}}else A=!1};f=function(a){B=a;A||(A=!0,G.postMessage(null))};g=function(a,b){C=
+x(function(){a(exports.unstable_now())},b)};h=function(){y(C);C=-1}}function H(a,b){var c=a.length;a.push(b);a:for(;;){var d=c-1>>>1,e=a[d];if(void 0!==e&&0<I(e,b))a[d]=b,a[c]=e,c=d;else break a}}function J(a){a=a[0];return void 0===a?null:a}
+function K(a){var b=a[0];if(void 0!==b){var c=a.pop();if(c!==b){a[0]=c;a:for(var d=0,e=a.length;d<e;){var m=2*(d+1)-1,n=a[m],v=m+1,r=a[v];if(void 0!==n&&0>I(n,c))void 0!==r&&0>I(r,n)?(a[d]=r,a[v]=c,d=v):(a[d]=n,a[m]=c,d=m);else if(void 0!==r&&0>I(r,c))a[d]=r,a[v]=c,d=v;else break a}}return b}return null}function I(a,b){var c=a.sortIndex-b.sortIndex;return 0!==c?c:a.id-b.id}var L=[],M=[],N=1,O=null,P=3,Q=!1,R=!1,S=!1;
+function T(a){for(var b=J(M);null!==b;){if(null===b.callback)K(M);else if(b.startTime<=a)K(M),b.sortIndex=b.expirationTime,H(L,b);else break;b=J(M)}}function U(a){S=!1;T(a);if(!R)if(null!==J(L))R=!0,f(V);else{var b=J(M);null!==b&&g(U,b.startTime-a)}}
+function V(a,b){R=!1;S&&(S=!1,h());Q=!0;var c=P;try{T(b);for(O=J(L);null!==O&&(!(O.expirationTime>b)||a&&!exports.unstable_shouldYield());){var d=O.callback;if("function"===typeof d){O.callback=null;P=O.priorityLevel;var e=d(O.expirationTime<=b);b=exports.unstable_now();"function"===typeof e?O.callback=e:O===J(L)&&K(L);T(b)}else K(L);O=J(L)}if(null!==O)var m=!0;else{var n=J(M);null!==n&&g(U,n.startTime-b);m=!1}return m}finally{O=null,P=c,Q=!1}}var W=k;exports.unstable_IdlePriority=5;
+exports.unstable_ImmediatePriority=1;exports.unstable_LowPriority=4;exports.unstable_NormalPriority=3;exports.unstable_Profiling=null;exports.unstable_UserBlockingPriority=2;exports.unstable_cancelCallback=function(a){a.callback=null};exports.unstable_continueExecution=function(){R||Q||(R=!0,f(V))};exports.unstable_getCurrentPriorityLevel=function(){return P};exports.unstable_getFirstCallbackNode=function(){return J(L)};
+exports.unstable_next=function(a){switch(P){case 1:case 2:case 3:var b=3;break;default:b=P}var c=P;P=b;try{return a()}finally{P=c}};exports.unstable_pauseExecution=function(){};exports.unstable_requestPaint=W;exports.unstable_runWithPriority=function(a,b){switch(a){case 1:case 2:case 3:case 4:case 5:break;default:a=3}var c=P;P=a;try{return b()}finally{P=c}};
+exports.unstable_scheduleCallback=function(a,b,c){var d=exports.unstable_now();"object"===typeof c&&null!==c?(c=c.delay,c="number"===typeof c&&0<c?d+c:d):c=d;switch(a){case 1:var e=-1;break;case 2:e=250;break;case 5:e=1073741823;break;case 4:e=1E4;break;default:e=5E3}e=c+e;a={id:N++,callback:b,priorityLevel:a,startTime:c,expirationTime:e,sortIndex:-1};c>d?(a.sortIndex=c,H(M,a),null===J(L)&&a===J(M)&&(S?h():S=!0,g(U,c-d))):(a.sortIndex=e,H(L,a),R||Q||(R=!0,f(V)));return a};
+exports.unstable_wrapCallback=function(a){var b=P;return function(){var c=P;P=b;try{return a.apply(this,arguments)}finally{P=c}}};
diff --git a/fixtures/tests/schedulers/stable/scheduler/index.js b/fixtures/tests/schedulers/stable/scheduler/index.js
new file mode 100644
index 0000000000000..77770b0c219e2
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/index.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/scheduler.production.min.js');
+} else {
+  module.exports = require('./cjs/scheduler.development.js');
+}
diff --git a/fixtures/tests/schedulers/stable/scheduler/tracing-profiling.js b/fixtures/tests/schedulers/stable/scheduler/tracing-profiling.js
new file mode 100644
index 0000000000000..cb2d20c025226
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/tracing-profiling.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/scheduler-tracing.profiling.min.js');
+} else {
+  module.exports = require('./cjs/scheduler-tracing.development.js');
+}
diff --git a/fixtures/tests/schedulers/stable/scheduler/tracing.js b/fixtures/tests/schedulers/stable/scheduler/tracing.js
new file mode 100644
index 0000000000000..1e318bd901b5d
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/tracing.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/scheduler-tracing.production.min.js');
+} else {
+  module.exports = require('./cjs/scheduler-tracing.development.js');
+}
diff --git a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.development.js b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.development.js
new file mode 100644
index 0000000000000..a81bf8fe2f98d
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.development.js
@@ -0,0 +1,80 @@
+/**
+ * @license React
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+(function(global, factory) {
+  // eslint-disable-next-line no-unused-expressions
+  typeof exports === 'object' && typeof module !== 'undefined'
+    ? (module.exports = factory(require('react')))
+    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
+    ? define(['react'], factory) // eslint-disable-line no-undef
+    : (global.SchedulerTracing = factory(global));
+})(this, function(global) {
+  function unstable_clear() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_clear.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getCurrent() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getCurrent.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getThreadID() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getThreadID.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_subscribe() {
+    // eslint-disable-next-line max-len
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_subscribe.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_trace() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_trace.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_unsubscribe() {
+    // eslint-disable-next-line max-len
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_unsubscribe.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_wrap() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_wrap.apply(
+      this,
+      arguments
+    );
+  }
+
+  return Object.freeze({
+    unstable_clear: unstable_clear,
+    unstable_getCurrent: unstable_getCurrent,
+    unstable_getThreadID: unstable_getThreadID,
+    unstable_subscribe: unstable_subscribe,
+    unstable_trace: unstable_trace,
+    unstable_unsubscribe: unstable_unsubscribe,
+    unstable_wrap: unstable_wrap,
+  });
+});
diff --git a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.production.min.js b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.production.min.js
new file mode 100644
index 0000000000000..a81bf8fe2f98d
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.production.min.js
@@ -0,0 +1,80 @@
+/**
+ * @license React
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+(function(global, factory) {
+  // eslint-disable-next-line no-unused-expressions
+  typeof exports === 'object' && typeof module !== 'undefined'
+    ? (module.exports = factory(require('react')))
+    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
+    ? define(['react'], factory) // eslint-disable-line no-undef
+    : (global.SchedulerTracing = factory(global));
+})(this, function(global) {
+  function unstable_clear() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_clear.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getCurrent() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getCurrent.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getThreadID() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getThreadID.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_subscribe() {
+    // eslint-disable-next-line max-len
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_subscribe.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_trace() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_trace.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_unsubscribe() {
+    // eslint-disable-next-line max-len
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_unsubscribe.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_wrap() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_wrap.apply(
+      this,
+      arguments
+    );
+  }
+
+  return Object.freeze({
+    unstable_clear: unstable_clear,
+    unstable_getCurrent: unstable_getCurrent,
+    unstable_getThreadID: unstable_getThreadID,
+    unstable_subscribe: unstable_subscribe,
+    unstable_trace: unstable_trace,
+    unstable_unsubscribe: unstable_unsubscribe,
+    unstable_wrap: unstable_wrap,
+  });
+});
diff --git a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.profiling.min.js b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.profiling.min.js
new file mode 100644
index 0000000000000..a81bf8fe2f98d
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.profiling.min.js
@@ -0,0 +1,80 @@
+/**
+ * @license React
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+(function(global, factory) {
+  // eslint-disable-next-line no-unused-expressions
+  typeof exports === 'object' && typeof module !== 'undefined'
+    ? (module.exports = factory(require('react')))
+    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
+    ? define(['react'], factory) // eslint-disable-line no-undef
+    : (global.SchedulerTracing = factory(global));
+})(this, function(global) {
+  function unstable_clear() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_clear.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getCurrent() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getCurrent.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getThreadID() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getThreadID.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_subscribe() {
+    // eslint-disable-next-line max-len
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_subscribe.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_trace() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_trace.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_unsubscribe() {
+    // eslint-disable-next-line max-len
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_unsubscribe.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_wrap() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_wrap.apply(
+      this,
+      arguments
+    );
+  }
+
+  return Object.freeze({
+    unstable_clear: unstable_clear,
+    unstable_getCurrent: unstable_getCurrent,
+    unstable_getThreadID: unstable_getThreadID,
+    unstable_subscribe: unstable_subscribe,
+    unstable_trace: unstable_trace,
+    unstable_unsubscribe: unstable_unsubscribe,
+    unstable_wrap: unstable_wrap,
+  });
+});
diff --git a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-unstable_mock.development.js b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-unstable_mock.development.js
new file mode 100644
index 0000000000000..8f87b6e10c52d
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-unstable_mock.development.js
@@ -0,0 +1,862 @@
+/** @license React v0.20.1
+ * scheduler-unstable_mock.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+  typeof define === 'function' && define.amd ? define(['exports'], factory) :
+  (global = global || self, factory(global.SchedulerMock = {}));
+}(this, (function (exports) { 'use strict';
+
+  var enableSchedulerDebugging = false;
+  var enableProfiling = true;
+
+  var currentTime = 0;
+  var scheduledCallback = null;
+  var scheduledTimeout = null;
+  var timeoutTime = -1;
+  var yieldedValues = null;
+  var expectedNumberOfYields = -1;
+  var didStop = false;
+  var isFlushing = false;
+  var needsPaint = false;
+  var shouldYieldForPaint = false;
+  function requestHostCallback(callback) {
+    scheduledCallback = callback;
+  }
+  function requestHostTimeout(callback, ms) {
+    scheduledTimeout = callback;
+    timeoutTime = currentTime + ms;
+  }
+  function cancelHostTimeout() {
+    scheduledTimeout = null;
+    timeoutTime = -1;
+  }
+  function shouldYieldToHost() {
+    if (expectedNumberOfYields !== -1 && yieldedValues !== null && yieldedValues.length >= expectedNumberOfYields || shouldYieldForPaint && needsPaint) {
+      // We yielded at least as many values as expected. Stop flushing.
+      didStop = true;
+      return true;
+    }
+
+    return false;
+  }
+  function getCurrentTime() {
+    return currentTime;
+  }
+  function forceFrameRate() {// No-op
+  }
+
+  function unstable_flushNumberOfYields(count) {
+    if (isFlushing) {
+      throw new Error('Already flushing work.');
+    }
+
+    if (scheduledCallback !== null) {
+      var cb = scheduledCallback;
+      expectedNumberOfYields = count;
+      isFlushing = true;
+
+      try {
+        var hasMoreWork = true;
+
+        do {
+          hasMoreWork = cb(true, currentTime);
+        } while (hasMoreWork && !didStop);
+
+        if (!hasMoreWork) {
+          scheduledCallback = null;
+        }
+      } finally {
+        expectedNumberOfYields = -1;
+        didStop = false;
+        isFlushing = false;
+      }
+    }
+  }
+  function unstable_flushUntilNextPaint() {
+    if (isFlushing) {
+      throw new Error('Already flushing work.');
+    }
+
+    if (scheduledCallback !== null) {
+      var cb = scheduledCallback;
+      shouldYieldForPaint = true;
+      needsPaint = false;
+      isFlushing = true;
+
+      try {
+        var hasMoreWork = true;
+
+        do {
+          hasMoreWork = cb(true, currentTime);
+        } while (hasMoreWork && !didStop);
+
+        if (!hasMoreWork) {
+          scheduledCallback = null;
+        }
+      } finally {
+        shouldYieldForPaint = false;
+        didStop = false;
+        isFlushing = false;
+      }
+    }
+  }
+  function unstable_flushExpired() {
+    if (isFlushing) {
+      throw new Error('Already flushing work.');
+    }
+
+    if (scheduledCallback !== null) {
+      isFlushing = true;
+
+      try {
+        var hasMoreWork = scheduledCallback(false, currentTime);
+
+        if (!hasMoreWork) {
+          scheduledCallback = null;
+        }
+      } finally {
+        isFlushing = false;
+      }
+    }
+  }
+  function unstable_flushAllWithoutAsserting() {
+    // Returns false if no work was flushed.
+    if (isFlushing) {
+      throw new Error('Already flushing work.');
+    }
+
+    if (scheduledCallback !== null) {
+      var cb = scheduledCallback;
+      isFlushing = true;
+
+      try {
+        var hasMoreWork = true;
+
+        do {
+          hasMoreWork = cb(true, currentTime);
+        } while (hasMoreWork);
+
+        if (!hasMoreWork) {
+          scheduledCallback = null;
+        }
+
+        return true;
+      } finally {
+        isFlushing = false;
+      }
+    } else {
+      return false;
+    }
+  }
+  function unstable_clearYields() {
+    if (yieldedValues === null) {
+      return [];
+    }
+
+    var values = yieldedValues;
+    yieldedValues = null;
+    return values;
+  }
+  function unstable_flushAll() {
+    if (yieldedValues !== null) {
+      throw new Error('Log is not empty. Assert on the log of yielded values before ' + 'flushing additional work.');
+    }
+
+    unstable_flushAllWithoutAsserting();
+
+    if (yieldedValues !== null) {
+      throw new Error('While flushing work, something yielded a value. Use an ' + 'assertion helper to assert on the log of yielded values, e.g. ' + 'expect(Scheduler).toFlushAndYield([...])');
+    }
+  }
+  function unstable_yieldValue(value) {
+    // eslint-disable-next-line react-internal/no-production-logging
+    if (console.log.name === 'disabledLog') {
+      // If console.log has been patched, we assume we're in render
+      // replaying and we ignore any values yielding in the second pass.
+      return;
+    }
+
+    if (yieldedValues === null) {
+      yieldedValues = [value];
+    } else {
+      yieldedValues.push(value);
+    }
+  }
+  function unstable_advanceTime(ms) {
+    // eslint-disable-next-line react-internal/no-production-logging
+    if (console.log.name === 'disabledLog') {
+      // If console.log has been patched, we assume we're in render
+      // replaying and we ignore any time advancing in the second pass.
+      return;
+    }
+
+    currentTime += ms;
+
+    if (scheduledTimeout !== null && timeoutTime <= currentTime) {
+      scheduledTimeout(currentTime);
+      timeoutTime = -1;
+      scheduledTimeout = null;
+    }
+  }
+  function requestPaint() {
+    needsPaint = true;
+  }
+
+  function push(heap, node) {
+    var index = heap.length;
+    heap.push(node);
+    siftUp(heap, node, index);
+  }
+  function peek(heap) {
+    var first = heap[0];
+    return first === undefined ? null : first;
+  }
+  function pop(heap) {
+    var first = heap[0];
+
+    if (first !== undefined) {
+      var last = heap.pop();
+
+      if (last !== first) {
+        heap[0] = last;
+        siftDown(heap, last, 0);
+      }
+
+      return first;
+    } else {
+      return null;
+    }
+  }
+
+  function siftUp(heap, node, i) {
+    var index = i;
+
+    while (true) {
+      var parentIndex = index - 1 >>> 1;
+      var parent = heap[parentIndex];
+
+      if (parent !== undefined && compare(parent, node) > 0) {
+        // The parent is larger. Swap positions.
+        heap[parentIndex] = node;
+        heap[index] = parent;
+        index = parentIndex;
+      } else {
+        // The parent is smaller. Exit.
+        return;
+      }
+    }
+  }
+
+  function siftDown(heap, node, i) {
+    var index = i;
+    var length = heap.length;
+
+    while (index < length) {
+      var leftIndex = (index + 1) * 2 - 1;
+      var left = heap[leftIndex];
+      var rightIndex = leftIndex + 1;
+      var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those.
+
+      if (left !== undefined && compare(left, node) < 0) {
+        if (right !== undefined && compare(right, left) < 0) {
+          heap[index] = right;
+          heap[rightIndex] = node;
+          index = rightIndex;
+        } else {
+          heap[index] = left;
+          heap[leftIndex] = node;
+          index = leftIndex;
+        }
+      } else if (right !== undefined && compare(right, node) < 0) {
+        heap[index] = right;
+        heap[rightIndex] = node;
+        index = rightIndex;
+      } else {
+        // Neither child is smaller. Exit.
+        return;
+      }
+    }
+  }
+
+  function compare(a, b) {
+    // Compare sort index first, then task id.
+    var diff = a.sortIndex - b.sortIndex;
+    return diff !== 0 ? diff : a.id - b.id;
+  }
+
+  // TODO: Use symbols?
+  var NoPriority = 0;
+  var ImmediatePriority = 1;
+  var UserBlockingPriority = 2;
+  var NormalPriority = 3;
+  var LowPriority = 4;
+  var IdlePriority = 5;
+
+  var runIdCounter = 0;
+  var mainThreadIdCounter = 0;
+  var profilingStateSize = 4;
+  var sharedProfilingBuffer =  // $FlowFixMe Flow doesn't know about SharedArrayBuffer
+  typeof SharedArrayBuffer === 'function' ? new SharedArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : // $FlowFixMe Flow doesn't know about ArrayBuffer
+  typeof ArrayBuffer === 'function' ? new ArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : null // Don't crash the init path on IE9
+  ;
+  var profilingState =  sharedProfilingBuffer !== null ? new Int32Array(sharedProfilingBuffer) : []; // We can't read this but it helps save bytes for null checks
+
+  var PRIORITY = 0;
+  var CURRENT_TASK_ID = 1;
+  var CURRENT_RUN_ID = 2;
+  var QUEUE_SIZE = 3;
+
+  {
+    profilingState[PRIORITY] = NoPriority; // This is maintained with a counter, because the size of the priority queue
+    // array might include canceled tasks.
+
+    profilingState[QUEUE_SIZE] = 0;
+    profilingState[CURRENT_TASK_ID] = 0;
+  } // Bytes per element is 4
+
+
+  var INITIAL_EVENT_LOG_SIZE = 131072;
+  var MAX_EVENT_LOG_SIZE = 524288; // Equivalent to 2 megabytes
+
+  var eventLogSize = 0;
+  var eventLogBuffer = null;
+  var eventLog = null;
+  var eventLogIndex = 0;
+  var TaskStartEvent = 1;
+  var TaskCompleteEvent = 2;
+  var TaskErrorEvent = 3;
+  var TaskCancelEvent = 4;
+  var TaskRunEvent = 5;
+  var TaskYieldEvent = 6;
+  var SchedulerSuspendEvent = 7;
+  var SchedulerResumeEvent = 8;
+
+  function logEvent(entries) {
+    if (eventLog !== null) {
+      var offset = eventLogIndex;
+      eventLogIndex += entries.length;
+
+      if (eventLogIndex + 1 > eventLogSize) {
+        eventLogSize *= 2;
+
+        if (eventLogSize > MAX_EVENT_LOG_SIZE) {
+          // Using console['error'] to evade Babel and ESLint
+          console['error']("Scheduler Profiling: Event log exceeded maximum size. Don't " + 'forget to call `stopLoggingProfilingEvents()`.');
+          stopLoggingProfilingEvents();
+          return;
+        }
+
+        var newEventLog = new Int32Array(eventLogSize * 4);
+        newEventLog.set(eventLog);
+        eventLogBuffer = newEventLog.buffer;
+        eventLog = newEventLog;
+      }
+
+      eventLog.set(entries, offset);
+    }
+  }
+
+  function startLoggingProfilingEvents() {
+    eventLogSize = INITIAL_EVENT_LOG_SIZE;
+    eventLogBuffer = new ArrayBuffer(eventLogSize * 4);
+    eventLog = new Int32Array(eventLogBuffer);
+    eventLogIndex = 0;
+  }
+  function stopLoggingProfilingEvents() {
+    var buffer = eventLogBuffer;
+    eventLogSize = 0;
+    eventLogBuffer = null;
+    eventLog = null;
+    eventLogIndex = 0;
+    return buffer;
+  }
+  function markTaskStart(task, ms) {
+    {
+      profilingState[QUEUE_SIZE]++;
+
+      if (eventLog !== null) {
+        // performance.now returns a float, representing milliseconds. When the
+        // event is logged, it's coerced to an int. Convert to microseconds to
+        // maintain extra degrees of precision.
+        logEvent([TaskStartEvent, ms * 1000, task.id, task.priorityLevel]);
+      }
+    }
+  }
+  function markTaskCompleted(task, ms) {
+    {
+      profilingState[PRIORITY] = NoPriority;
+      profilingState[CURRENT_TASK_ID] = 0;
+      profilingState[QUEUE_SIZE]--;
+
+      if (eventLog !== null) {
+        logEvent([TaskCompleteEvent, ms * 1000, task.id]);
+      }
+    }
+  }
+  function markTaskCanceled(task, ms) {
+    {
+      profilingState[QUEUE_SIZE]--;
+
+      if (eventLog !== null) {
+        logEvent([TaskCancelEvent, ms * 1000, task.id]);
+      }
+    }
+  }
+  function markTaskErrored(task, ms) {
+    {
+      profilingState[PRIORITY] = NoPriority;
+      profilingState[CURRENT_TASK_ID] = 0;
+      profilingState[QUEUE_SIZE]--;
+
+      if (eventLog !== null) {
+        logEvent([TaskErrorEvent, ms * 1000, task.id]);
+      }
+    }
+  }
+  function markTaskRun(task, ms) {
+    {
+      runIdCounter++;
+      profilingState[PRIORITY] = task.priorityLevel;
+      profilingState[CURRENT_TASK_ID] = task.id;
+      profilingState[CURRENT_RUN_ID] = runIdCounter;
+
+      if (eventLog !== null) {
+        logEvent([TaskRunEvent, ms * 1000, task.id, runIdCounter]);
+      }
+    }
+  }
+  function markTaskYield(task, ms) {
+    {
+      profilingState[PRIORITY] = NoPriority;
+      profilingState[CURRENT_TASK_ID] = 0;
+      profilingState[CURRENT_RUN_ID] = 0;
+
+      if (eventLog !== null) {
+        logEvent([TaskYieldEvent, ms * 1000, task.id, runIdCounter]);
+      }
+    }
+  }
+  function markSchedulerSuspended(ms) {
+    {
+      mainThreadIdCounter++;
+
+      if (eventLog !== null) {
+        logEvent([SchedulerSuspendEvent, ms * 1000, mainThreadIdCounter]);
+      }
+    }
+  }
+  function markSchedulerUnsuspended(ms) {
+    {
+      if (eventLog !== null) {
+        logEvent([SchedulerResumeEvent, ms * 1000, mainThreadIdCounter]);
+      }
+    }
+  }
+
+  /* eslint-disable no-var */
+  // Math.pow(2, 30) - 1
+  // 0b111111111111111111111111111111
+
+  var maxSigned31BitInt = 1073741823; // Times out immediately
+
+  var IMMEDIATE_PRIORITY_TIMEOUT = -1; // Eventually times out
+
+  var USER_BLOCKING_PRIORITY_TIMEOUT = 250;
+  var NORMAL_PRIORITY_TIMEOUT = 5000;
+  var LOW_PRIORITY_TIMEOUT = 10000; // Never times out
+
+  var IDLE_PRIORITY_TIMEOUT = maxSigned31BitInt; // Tasks are stored on a min heap
+
+  var taskQueue = [];
+  var timerQueue = []; // Incrementing id counter. Used to maintain insertion order.
+
+  var taskIdCounter = 1; // Pausing the scheduler is useful for debugging.
+  var currentTask = null;
+  var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrancy.
+
+  var isPerformingWork = false;
+  var isHostCallbackScheduled = false;
+  var isHostTimeoutScheduled = false;
+
+  function advanceTimers(currentTime) {
+    // Check for tasks that are no longer delayed and add them to the queue.
+    var timer = peek(timerQueue);
+
+    while (timer !== null) {
+      if (timer.callback === null) {
+        // Timer was cancelled.
+        pop(timerQueue);
+      } else if (timer.startTime <= currentTime) {
+        // Timer fired. Transfer to the task queue.
+        pop(timerQueue);
+        timer.sortIndex = timer.expirationTime;
+        push(taskQueue, timer);
+
+        {
+          markTaskStart(timer, currentTime);
+          timer.isQueued = true;
+        }
+      } else {
+        // Remaining timers are pending.
+        return;
+      }
+
+      timer = peek(timerQueue);
+    }
+  }
+
+  function handleTimeout(currentTime) {
+    isHostTimeoutScheduled = false;
+    advanceTimers(currentTime);
+
+    if (!isHostCallbackScheduled) {
+      if (peek(taskQueue) !== null) {
+        isHostCallbackScheduled = true;
+        requestHostCallback(flushWork);
+      } else {
+        var firstTimer = peek(timerQueue);
+
+        if (firstTimer !== null) {
+          requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
+        }
+      }
+    }
+  }
+
+  function flushWork(hasTimeRemaining, initialTime) {
+    {
+      markSchedulerUnsuspended(initialTime);
+    } // We'll need a host callback the next time work is scheduled.
+
+
+    isHostCallbackScheduled = false;
+
+    if (isHostTimeoutScheduled) {
+      // We scheduled a timeout but it's no longer needed. Cancel it.
+      isHostTimeoutScheduled = false;
+      cancelHostTimeout();
+    }
+
+    isPerformingWork = true;
+    var previousPriorityLevel = currentPriorityLevel;
+
+    try {
+      if (enableProfiling) {
+        try {
+          return workLoop(hasTimeRemaining, initialTime);
+        } catch (error) {
+          if (currentTask !== null) {
+            var currentTime = getCurrentTime();
+            markTaskErrored(currentTask, currentTime);
+            currentTask.isQueued = false;
+          }
+
+          throw error;
+        }
+      } else {
+        // No catch in prod code path.
+        return workLoop(hasTimeRemaining, initialTime);
+      }
+    } finally {
+      currentTask = null;
+      currentPriorityLevel = previousPriorityLevel;
+      isPerformingWork = false;
+
+      {
+        var _currentTime = getCurrentTime();
+
+        markSchedulerSuspended(_currentTime);
+      }
+    }
+  }
+
+  function workLoop(hasTimeRemaining, initialTime) {
+    var currentTime = initialTime;
+    advanceTimers(currentTime);
+    currentTask = peek(taskQueue);
+
+    while (currentTask !== null && !(enableSchedulerDebugging )) {
+      if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost())) {
+        // This currentTask hasn't expired, and we've reached the deadline.
+        break;
+      }
+
+      var callback = currentTask.callback;
+
+      if (typeof callback === 'function') {
+        currentTask.callback = null;
+        currentPriorityLevel = currentTask.priorityLevel;
+        var didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
+        markTaskRun(currentTask, currentTime);
+        var continuationCallback = callback(didUserCallbackTimeout);
+        currentTime = getCurrentTime();
+
+        if (typeof continuationCallback === 'function') {
+          currentTask.callback = continuationCallback;
+          markTaskYield(currentTask, currentTime);
+        } else {
+          {
+            markTaskCompleted(currentTask, currentTime);
+            currentTask.isQueued = false;
+          }
+
+          if (currentTask === peek(taskQueue)) {
+            pop(taskQueue);
+          }
+        }
+
+        advanceTimers(currentTime);
+      } else {
+        pop(taskQueue);
+      }
+
+      currentTask = peek(taskQueue);
+    } // Return whether there's additional work
+
+
+    if (currentTask !== null) {
+      return true;
+    } else {
+      var firstTimer = peek(timerQueue);
+
+      if (firstTimer !== null) {
+        requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
+      }
+
+      return false;
+    }
+  }
+
+  function unstable_runWithPriority(priorityLevel, eventHandler) {
+    switch (priorityLevel) {
+      case ImmediatePriority:
+      case UserBlockingPriority:
+      case NormalPriority:
+      case LowPriority:
+      case IdlePriority:
+        break;
+
+      default:
+        priorityLevel = NormalPriority;
+    }
+
+    var previousPriorityLevel = currentPriorityLevel;
+    currentPriorityLevel = priorityLevel;
+
+    try {
+      return eventHandler();
+    } finally {
+      currentPriorityLevel = previousPriorityLevel;
+    }
+  }
+
+  function unstable_next(eventHandler) {
+    var priorityLevel;
+
+    switch (currentPriorityLevel) {
+      case ImmediatePriority:
+      case UserBlockingPriority:
+      case NormalPriority:
+        // Shift down to normal priority
+        priorityLevel = NormalPriority;
+        break;
+
+      default:
+        // Anything lower than normal priority should remain at the current level.
+        priorityLevel = currentPriorityLevel;
+        break;
+    }
+
+    var previousPriorityLevel = currentPriorityLevel;
+    currentPriorityLevel = priorityLevel;
+
+    try {
+      return eventHandler();
+    } finally {
+      currentPriorityLevel = previousPriorityLevel;
+    }
+  }
+
+  function unstable_wrapCallback(callback) {
+    var parentPriorityLevel = currentPriorityLevel;
+    return function () {
+      // This is a fork of runWithPriority, inlined for performance.
+      var previousPriorityLevel = currentPriorityLevel;
+      currentPriorityLevel = parentPriorityLevel;
+
+      try {
+        return callback.apply(this, arguments);
+      } finally {
+        currentPriorityLevel = previousPriorityLevel;
+      }
+    };
+  }
+
+  function unstable_scheduleCallback(priorityLevel, callback, options) {
+    var currentTime = getCurrentTime();
+    var startTime;
+
+    if (typeof options === 'object' && options !== null) {
+      var delay = options.delay;
+
+      if (typeof delay === 'number' && delay > 0) {
+        startTime = currentTime + delay;
+      } else {
+        startTime = currentTime;
+      }
+    } else {
+      startTime = currentTime;
+    }
+
+    var timeout;
+
+    switch (priorityLevel) {
+      case ImmediatePriority:
+        timeout = IMMEDIATE_PRIORITY_TIMEOUT;
+        break;
+
+      case UserBlockingPriority:
+        timeout = USER_BLOCKING_PRIORITY_TIMEOUT;
+        break;
+
+      case IdlePriority:
+        timeout = IDLE_PRIORITY_TIMEOUT;
+        break;
+
+      case LowPriority:
+        timeout = LOW_PRIORITY_TIMEOUT;
+        break;
+
+      case NormalPriority:
+      default:
+        timeout = NORMAL_PRIORITY_TIMEOUT;
+        break;
+    }
+
+    var expirationTime = startTime + timeout;
+    var newTask = {
+      id: taskIdCounter++,
+      callback: callback,
+      priorityLevel: priorityLevel,
+      startTime: startTime,
+      expirationTime: expirationTime,
+      sortIndex: -1
+    };
+
+    {
+      newTask.isQueued = false;
+    }
+
+    if (startTime > currentTime) {
+      // This is a delayed task.
+      newTask.sortIndex = startTime;
+      push(timerQueue, newTask);
+
+      if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
+        // All tasks are delayed, and this is the task with the earliest delay.
+        if (isHostTimeoutScheduled) {
+          // Cancel an existing timeout.
+          cancelHostTimeout();
+        } else {
+          isHostTimeoutScheduled = true;
+        } // Schedule a timeout.
+
+
+        requestHostTimeout(handleTimeout, startTime - currentTime);
+      }
+    } else {
+      newTask.sortIndex = expirationTime;
+      push(taskQueue, newTask);
+
+      {
+        markTaskStart(newTask, currentTime);
+        newTask.isQueued = true;
+      } // Schedule a host callback, if needed. If we're already performing work,
+      // wait until the next time we yield.
+
+
+      if (!isHostCallbackScheduled && !isPerformingWork) {
+        isHostCallbackScheduled = true;
+        requestHostCallback(flushWork);
+      }
+    }
+
+    return newTask;
+  }
+
+  function unstable_pauseExecution() {
+  }
+
+  function unstable_continueExecution() {
+
+    if (!isHostCallbackScheduled && !isPerformingWork) {
+      isHostCallbackScheduled = true;
+      requestHostCallback(flushWork);
+    }
+  }
+
+  function unstable_getFirstCallbackNode() {
+    return peek(taskQueue);
+  }
+
+  function unstable_cancelCallback(task) {
+    {
+      if (task.isQueued) {
+        var currentTime = getCurrentTime();
+        markTaskCanceled(task, currentTime);
+        task.isQueued = false;
+      }
+    } // Null out the callback to indicate the task has been canceled. (Can't
+    // remove from the queue because you can't remove arbitrary nodes from an
+    // array based heap, only the first one.)
+
+
+    task.callback = null;
+  }
+
+  function unstable_getCurrentPriorityLevel() {
+    return currentPriorityLevel;
+  }
+
+  var unstable_requestPaint = requestPaint;
+  var unstable_Profiling =  {
+    startLoggingProfilingEvents: startLoggingProfilingEvents,
+    stopLoggingProfilingEvents: stopLoggingProfilingEvents,
+    sharedProfilingBuffer: sharedProfilingBuffer
+  } ;
+
+  exports.unstable_IdlePriority = IdlePriority;
+  exports.unstable_ImmediatePriority = ImmediatePriority;
+  exports.unstable_LowPriority = LowPriority;
+  exports.unstable_NormalPriority = NormalPriority;
+  exports.unstable_Profiling = unstable_Profiling;
+  exports.unstable_UserBlockingPriority = UserBlockingPriority;
+  exports.unstable_advanceTime = unstable_advanceTime;
+  exports.unstable_cancelCallback = unstable_cancelCallback;
+  exports.unstable_clearYields = unstable_clearYields;
+  exports.unstable_continueExecution = unstable_continueExecution;
+  exports.unstable_flushAll = unstable_flushAll;
+  exports.unstable_flushAllWithoutAsserting = unstable_flushAllWithoutAsserting;
+  exports.unstable_flushExpired = unstable_flushExpired;
+  exports.unstable_flushNumberOfYields = unstable_flushNumberOfYields;
+  exports.unstable_flushUntilNextPaint = unstable_flushUntilNextPaint;
+  exports.unstable_forceFrameRate = forceFrameRate;
+  exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
+  exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
+  exports.unstable_next = unstable_next;
+  exports.unstable_now = getCurrentTime;
+  exports.unstable_pauseExecution = unstable_pauseExecution;
+  exports.unstable_requestPaint = unstable_requestPaint;
+  exports.unstable_runWithPriority = unstable_runWithPriority;
+  exports.unstable_scheduleCallback = unstable_scheduleCallback;
+  exports.unstable_shouldYield = shouldYieldToHost;
+  exports.unstable_wrapCallback = unstable_wrapCallback;
+  exports.unstable_yieldValue = unstable_yieldValue;
+
+})));
diff --git a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-unstable_mock.production.min.js b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-unstable_mock.production.min.js
new file mode 100644
index 0000000000000..208c78eda0136
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-unstable_mock.production.min.js
@@ -0,0 +1,18 @@
+/** @license React v0.20.1
+ * scheduler-unstable_mock.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+(function(){'use strict';(function(a,v){"object"===typeof exports&&"undefined"!==typeof module?v(exports):"function"===typeof define&&define.amd?define(["exports"],v):(a=a||self,v(a.SchedulerMock={}))})(this,function(a){function v(){return-1!==y&&null!==k&&k.length>=y||C&&D?r=!0:!1}function I(){if(f)throw Error("Already flushing work.");if(null!==e){var b=e;f=!0;try{var h=!0;do h=b(!0,g);while(h);h||(e=null);return!0}finally{f=!1}}else return!1}function E(b,h){var c=b.length;b.push(h);a:for(;;){var a=c-1>>>1,
+w=b[a];if(void 0!==w&&0<z(w,h))b[a]=h,b[c]=w,c=a;else break a}}function m(b){b=b[0];return void 0===b?null:b}function A(b){var h=b[0];if(void 0!==h){var c=b.pop();if(c!==h){b[0]=c;a:for(var a=0,w=b.length;a<w;){var d=2*(a+1)-1,e=b[d],g=d+1,f=b[g];if(void 0!==e&&0>z(e,c))void 0!==f&&0>z(f,e)?(b[a]=f,b[g]=c,a=g):(b[a]=e,b[d]=c,a=d);else if(void 0!==f&&0>z(f,c))b[a]=f,b[g]=c,a=g;else break a}}return h}return null}function z(b,h){var a=b.sortIndex-h.sortIndex;return 0!==a?a:b.id-h.id}function F(b){for(var a=
+m(p);null!==a;){if(null===a.callback)A(p);else if(a.startTime<=b)A(p),a.sortIndex=a.expirationTime,E(n,a);else break;a=m(p)}}function G(b){x=!1;F(b);if(!t)if(null!==m(n))t=!0,e=H;else{var a=m(p);null!==a&&(b=a.startTime-b,q=G,u=g+b)}}function H(b,a){t=!1;x&&(x=!1,q=null,u=-1);B=!0;var c=d;try{F(a);for(l=m(n);null!==l&&(!(l.expirationTime>a)||b&&!v());){var h=l.callback;if("function"===typeof h){l.callback=null;d=l.priorityLevel;var e=h(l.expirationTime<=a);a=g;"function"===typeof e?l.callback=e:l===
+m(n)&&A(n);F(a)}else A(n);l=m(n)}if(null!==l)var f=!0;else{var k=m(p);if(null!==k){var r=k.startTime-a;q=G;u=g+r}f=!1}return f}finally{l=null,d=c,B=!1}}var g=0,e=null,q=null,u=-1,k=null,y=-1,r=!1,f=!1,D=!1,C=!1,n=[],p=[],J=1,l=null,d=3,B=!1,t=!1,x=!1;a.unstable_IdlePriority=5;a.unstable_ImmediatePriority=1;a.unstable_LowPriority=4;a.unstable_NormalPriority=3;a.unstable_Profiling=null;a.unstable_UserBlockingPriority=2;a.unstable_advanceTime=function(b){"disabledLog"!==console.log.name&&(g+=b,null!==
+q&&u<=g&&(q(g),u=-1,q=null))};a.unstable_cancelCallback=function(b){b.callback=null};a.unstable_clearYields=function(){if(null===k)return[];var b=k;k=null;return b};a.unstable_continueExecution=function(){t||B||(t=!0,e=H)};a.unstable_flushAll=function(){if(null!==k)throw Error("Log is not empty. Assert on the log of yielded values before flushing additional work.");I();if(null!==k)throw Error("While flushing work, something yielded a value. Use an assertion helper to assert on the log of yielded values, e.g. expect(Scheduler).toFlushAndYield([...])");
+};a.unstable_flushAllWithoutAsserting=I;a.unstable_flushExpired=function(){if(f)throw Error("Already flushing work.");if(null!==e){f=!0;try{e(!1,g)||(e=null)}finally{f=!1}}};a.unstable_flushNumberOfYields=function(b){if(f)throw Error("Already flushing work.");if(null!==e){var a=e;y=b;f=!0;try{b=!0;do b=a(!0,g);while(b&&!r);b||(e=null)}finally{y=-1,f=r=!1}}};a.unstable_flushUntilNextPaint=function(){if(f)throw Error("Already flushing work.");if(null!==e){var b=e;C=!0;D=!1;f=!0;try{var a=!0;do a=b(!0,
+g);while(a&&!r);a||(e=null)}finally{f=r=C=!1}}};a.unstable_forceFrameRate=function(){};a.unstable_getCurrentPriorityLevel=function(){return d};a.unstable_getFirstCallbackNode=function(){return m(n)};a.unstable_next=function(b){switch(d){case 1:case 2:case 3:var a=3;break;default:a=d}var c=d;d=a;try{return b()}finally{d=c}};a.unstable_now=function(){return g};a.unstable_pauseExecution=function(){};a.unstable_requestPaint=function(){D=!0};a.unstable_runWithPriority=function(a,e){switch(a){case 1:case 2:case 3:case 4:case 5:break;
+default:a=3}var b=d;d=a;try{return e()}finally{d=b}};a.unstable_scheduleCallback=function(a,f,c){var b=g;"object"===typeof c&&null!==c?(c=c.delay,c="number"===typeof c&&0<c?b+c:b):c=b;switch(a){case 1:var d=-1;break;case 2:d=250;break;case 5:d=1073741823;break;case 4:d=1E4;break;default:d=5E3}d=c+d;a={id:J++,callback:f,priorityLevel:a,startTime:c,expirationTime:d,sortIndex:-1};c>b?(a.sortIndex=c,E(p,a),null===m(n)&&a===m(p)&&(x?(q=null,u=-1):x=!0,q=G,u=g+(c-b))):(a.sortIndex=d,E(n,a),t||B||(t=!0,
+e=H));return a};a.unstable_shouldYield=v;a.unstable_wrapCallback=function(a){var b=d;return function(){var c=d;d=b;try{return a.apply(this,arguments)}finally{d=c}}};a.unstable_yieldValue=function(a){"disabledLog"!==console.log.name&&(null===k?k=[a]:k.push(a))}});
+})();
diff --git a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler.development.js b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler.development.js
new file mode 100644
index 0000000000000..b960dc91132e7
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler.development.js
@@ -0,0 +1,152 @@
+/**
+ * @license React
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/* eslint-disable max-len */
+
+'use strict';
+
+(function(global, factory) {
+  // eslint-disable-next-line no-unused-expressions
+  typeof exports === 'object' && typeof module !== 'undefined'
+    ? (module.exports = factory(require('react')))
+    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
+    ? define(['react'], factory) // eslint-disable-line no-undef
+    : (global.Scheduler = factory(global));
+})(this, function(global) {
+  function unstable_now() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_now.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_scheduleCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_scheduleCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_cancelCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_cancelCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_shouldYield() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_shouldYield.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_requestPaint() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_requestPaint.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_runWithPriority() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_runWithPriority.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_next() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_next.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_wrapCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_wrapCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getCurrentPriorityLevel() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getCurrentPriorityLevel.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getFirstCallbackNode() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getFirstCallbackNode.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_pauseExecution() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_pauseExecution.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_continueExecution() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_continueExecution.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_forceFrameRate() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_forceFrameRate.apply(
+      this,
+      arguments
+    );
+  }
+
+  return Object.freeze({
+    unstable_now: unstable_now,
+    unstable_scheduleCallback: unstable_scheduleCallback,
+    unstable_cancelCallback: unstable_cancelCallback,
+    unstable_shouldYield: unstable_shouldYield,
+    unstable_requestPaint: unstable_requestPaint,
+    unstable_runWithPriority: unstable_runWithPriority,
+    unstable_next: unstable_next,
+    unstable_wrapCallback: unstable_wrapCallback,
+    unstable_getCurrentPriorityLevel: unstable_getCurrentPriorityLevel,
+    unstable_continueExecution: unstable_continueExecution,
+    unstable_pauseExecution: unstable_pauseExecution,
+    unstable_getFirstCallbackNode: unstable_getFirstCallbackNode,
+    unstable_forceFrameRate: unstable_forceFrameRate,
+    get unstable_IdlePriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_IdlePriority;
+    },
+    get unstable_ImmediatePriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_ImmediatePriority;
+    },
+    get unstable_LowPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_LowPriority;
+    },
+    get unstable_NormalPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_NormalPriority;
+    },
+    get unstable_UserBlockingPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_UserBlockingPriority;
+    },
+    get unstable_Profiling() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_Profiling;
+    },
+  });
+});
diff --git a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler.production.min.js b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler.production.min.js
new file mode 100644
index 0000000000000..0c2584331b847
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler.production.min.js
@@ -0,0 +1,146 @@
+/**
+ * @license React
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/* eslint-disable max-len */
+
+'use strict';
+
+(function(global, factory) {
+  // eslint-disable-next-line no-unused-expressions
+  typeof exports === 'object' && typeof module !== 'undefined'
+    ? (module.exports = factory(require('react')))
+    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
+    ? define(['react'], factory) // eslint-disable-line no-undef
+    : (global.Scheduler = factory(global));
+})(this, function(global) {
+  function unstable_now() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_now.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_scheduleCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_scheduleCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_cancelCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_cancelCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_shouldYield() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_shouldYield.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_requestPaint() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_requestPaint.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_runWithPriority() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_runWithPriority.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_next() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_next.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_wrapCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_wrapCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getCurrentPriorityLevel() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getCurrentPriorityLevel.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getFirstCallbackNode() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getFirstCallbackNode.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_pauseExecution() {
+    return undefined;
+  }
+
+  function unstable_continueExecution() {
+    return undefined;
+  }
+
+  function unstable_forceFrameRate() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_forceFrameRate.apply(
+      this,
+      arguments
+    );
+  }
+
+  return Object.freeze({
+    unstable_now: unstable_now,
+    unstable_scheduleCallback: unstable_scheduleCallback,
+    unstable_cancelCallback: unstable_cancelCallback,
+    unstable_shouldYield: unstable_shouldYield,
+    unstable_requestPaint: unstable_requestPaint,
+    unstable_runWithPriority: unstable_runWithPriority,
+    unstable_next: unstable_next,
+    unstable_wrapCallback: unstable_wrapCallback,
+    unstable_getCurrentPriorityLevel: unstable_getCurrentPriorityLevel,
+    unstable_continueExecution: unstable_continueExecution,
+    unstable_pauseExecution: unstable_pauseExecution,
+    unstable_getFirstCallbackNode: unstable_getFirstCallbackNode,
+    unstable_forceFrameRate: unstable_forceFrameRate,
+    get unstable_IdlePriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_IdlePriority;
+    },
+    get unstable_ImmediatePriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_ImmediatePriority;
+    },
+    get unstable_LowPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_LowPriority;
+    },
+    get unstable_NormalPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_NormalPriority;
+    },
+    get unstable_UserBlockingPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_UserBlockingPriority;
+    },
+    get unstable_Profiling() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_Profiling;
+    },
+  });
+});
diff --git a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler.profiling.min.js b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler.profiling.min.js
new file mode 100644
index 0000000000000..0c2584331b847
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler.profiling.min.js
@@ -0,0 +1,146 @@
+/**
+ * @license React
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/* eslint-disable max-len */
+
+'use strict';
+
+(function(global, factory) {
+  // eslint-disable-next-line no-unused-expressions
+  typeof exports === 'object' && typeof module !== 'undefined'
+    ? (module.exports = factory(require('react')))
+    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
+    ? define(['react'], factory) // eslint-disable-line no-undef
+    : (global.Scheduler = factory(global));
+})(this, function(global) {
+  function unstable_now() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_now.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_scheduleCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_scheduleCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_cancelCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_cancelCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_shouldYield() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_shouldYield.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_requestPaint() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_requestPaint.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_runWithPriority() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_runWithPriority.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_next() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_next.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_wrapCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_wrapCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getCurrentPriorityLevel() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getCurrentPriorityLevel.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getFirstCallbackNode() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getFirstCallbackNode.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_pauseExecution() {
+    return undefined;
+  }
+
+  function unstable_continueExecution() {
+    return undefined;
+  }
+
+  function unstable_forceFrameRate() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_forceFrameRate.apply(
+      this,
+      arguments
+    );
+  }
+
+  return Object.freeze({
+    unstable_now: unstable_now,
+    unstable_scheduleCallback: unstable_scheduleCallback,
+    unstable_cancelCallback: unstable_cancelCallback,
+    unstable_shouldYield: unstable_shouldYield,
+    unstable_requestPaint: unstable_requestPaint,
+    unstable_runWithPriority: unstable_runWithPriority,
+    unstable_next: unstable_next,
+    unstable_wrapCallback: unstable_wrapCallback,
+    unstable_getCurrentPriorityLevel: unstable_getCurrentPriorityLevel,
+    unstable_continueExecution: unstable_continueExecution,
+    unstable_pauseExecution: unstable_pauseExecution,
+    unstable_getFirstCallbackNode: unstable_getFirstCallbackNode,
+    unstable_forceFrameRate: unstable_forceFrameRate,
+    get unstable_IdlePriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_IdlePriority;
+    },
+    get unstable_ImmediatePriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_ImmediatePriority;
+    },
+    get unstable_LowPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_LowPriority;
+    },
+    get unstable_NormalPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_NormalPriority;
+    },
+    get unstable_UserBlockingPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_UserBlockingPriority;
+    },
+    get unstable_Profiling() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_Profiling;
+    },
+  });
+});
diff --git a/fixtures/tests/schedulers/stable/scheduler/unstable_mock.js b/fixtures/tests/schedulers/stable/scheduler/unstable_mock.js
new file mode 100644
index 0000000000000..e72ea3186f005
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/unstable_mock.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/scheduler-unstable_mock.production.min.js');
+} else {
+  module.exports = require('./cjs/scheduler-unstable_mock.development.js');
+}
diff --git a/fixtures/tests/schedulers/stable/scheduler/unstable_post_task.js b/fixtures/tests/schedulers/stable/scheduler/unstable_post_task.js
new file mode 100644
index 0000000000000..62ecbd5a072bc
--- /dev/null
+++ b/fixtures/tests/schedulers/stable/scheduler/unstable_post_task.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/scheduler-unstable_post_task.production.min.js');
+} else {
+  module.exports = require('./cjs/scheduler-unstable_post_task.development.js');
+}
diff --git a/fixtures/tests/yarn.lock b/fixtures/tests/yarn.lock
new file mode 100644
index 0000000000000..94134f6709072
--- /dev/null
+++ b/fixtures/tests/yarn.lock
@@ -0,0 +1,3882 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@babel/code-frame@^7.0.0", "@babel/code-frame@^7.12.13":
+  version "7.12.13"
+  resolved "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.12.13.tgz"
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+  dependencies:
+    "@babel/highlight" "^7.12.13"
+
+"@babel/compat-data@^7.13.8":
+  version "7.13.8"
+  resolved "https://registry.npmjs.org/@babel/compat-data/-/compat-data-7.13.8.tgz"
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+
+"@babel/core@^7.1.0", "@babel/core@^7.13.10", "@babel/core@^7.7.5":
+  version "7.13.10"
+  resolved "https://registry.npmjs.org/@babel/core/-/core-7.13.10.tgz"
+  integrity sha512-bfIYcT0BdKeAZrovpMqX2Mx5NrgAckGbwT982AkdS5GNfn3KMGiprlBAtmBcFZRUmpaufS6WZFP8trvx8ptFDw==
+  dependencies:
+    "@babel/code-frame" "^7.12.13"
+    "@babel/generator" "^7.13.9"
+    "@babel/helper-compilation-targets" "^7.13.10"
+    "@babel/helper-module-transforms" "^7.13.0"
+    "@babel/helpers" "^7.13.10"
+    "@babel/parser" "^7.13.10"
+    "@babel/template" "^7.12.13"
+    "@babel/traverse" "^7.13.0"
+    "@babel/types" "^7.13.0"
+    convert-source-map "^1.7.0"
+    debug "^4.1.0"
+    gensync "^1.0.0-beta.2"
+    json5 "^2.1.2"
+    lodash "^4.17.19"
+    semver "^6.3.0"
+    source-map "^0.5.0"
+
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+  version "7.13.9"
+  resolved "https://registry.npmjs.org/@babel/generator/-/generator-7.13.9.tgz"
+  integrity sha512-mHOOmY0Axl/JCTkxTU6Lf5sWOg/v8nUa+Xkt4zMTftX0wqmb6Sh7J8gvcehBw7q0AhrhAR+FDacKjCZ2X8K+Sw==
+  dependencies:
+    "@babel/types" "^7.13.0"
+    jsesc "^2.5.1"
+    source-map "^0.5.0"
+
+"@babel/helper-annotate-as-pure@^7.10.4", "@babel/helper-annotate-as-pure@^7.12.13":
+  version "7.12.13"
+  resolved "https://registry.yarnpkg.com/@babel/helper-annotate-as-pure/-/helper-annotate-as-pure-7.12.13.tgz#0f58e86dfc4bb3b1fcd7db806570e177d439b6ab"
+  integrity sha512-7YXfX5wQ5aYM/BOlbSccHDbuXXFPxeoUmfWtz8le2yTkTZc+BxsiEnENFoi2SlmA8ewDkG2LgIMIVzzn2h8kfw==
+  dependencies:
+    "@babel/types" "^7.12.13"
+
+"@babel/helper-compilation-targets@^7.13.10":
+  version "7.13.10"
+  resolved "https://registry.npmjs.org/@babel/helper-compilation-targets/-/helper-compilation-targets-7.13.10.tgz"
+  integrity sha512-/Xju7Qg1GQO4mHZ/Kcs6Au7gfafgZnwm+a7sy/ow/tV1sHeraRUHbjdat8/UvDor4Tez+siGKDk6zIKtCPKVJA==
+  dependencies:
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+    "@babel/helper-validator-option" "^7.12.17"
+    browserslist "^4.14.5"
+    semver "^6.3.0"
+
+"@babel/helper-function-name@^7.12.13":
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+  resolved "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.12.13.tgz"
+  integrity sha512-TZvmPn0UOqmvi5G4vvw0qZTpVptGkB1GL61R6lKvrSdIxGm5Pky7Q3fpKiIkQCAtRCBUwB0PaThlx9vebCDSwA==
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+    "@babel/types" "^7.12.13"
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+  resolved "https://registry.npmjs.org/@babel/helper-get-function-arity/-/helper-get-function-arity-7.12.13.tgz"
+  integrity sha512-DjEVzQNz5LICkzN0REdpD5prGoidvbdYk1BVgRUOINaWJP2t6avB27X1guXK1kXNrX0WMfsrm1A/ZBthYuIMQg==
+  dependencies:
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+
+"@babel/helper-member-expression-to-functions@^7.13.0":
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+  resolved "https://registry.npmjs.org/@babel/helper-member-expression-to-functions/-/helper-member-expression-to-functions-7.13.0.tgz"
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+  dependencies:
+    "@babel/types" "^7.13.0"
+
+"@babel/helper-module-imports@^7.12.13":
+  version "7.12.13"
+  resolved "https://registry.npmjs.org/@babel/helper-module-imports/-/helper-module-imports-7.12.13.tgz"
+  integrity sha512-NGmfvRp9Rqxy0uHSSVP+SRIW1q31a7Ji10cLBcqSDUngGentY4FRiHOFZFE1CLU5eiL0oE8reH7Tg1y99TDM/g==
+  dependencies:
+    "@babel/types" "^7.12.13"
+
+"@babel/helper-module-transforms@^7.13.0":
+  version "7.13.0"
+  resolved "https://registry.npmjs.org/@babel/helper-module-transforms/-/helper-module-transforms-7.13.0.tgz"
+  integrity sha512-Ls8/VBwH577+pw7Ku1QkUWIyRRNHpYlts7+qSqBBFCW3I8QteB9DxfcZ5YJpOwH6Ihe/wn8ch7fMGOP1OhEIvw==
+  dependencies:
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+    "@babel/traverse" "^7.13.0"
+    "@babel/types" "^7.13.0"
+    lodash "^4.17.19"
+
+"@babel/helper-optimise-call-expression@^7.12.13":
+  version "7.12.13"
+  resolved "https://registry.npmjs.org/@babel/helper-optimise-call-expression/-/helper-optimise-call-expression-7.12.13.tgz"
+  integrity sha512-BdWQhoVJkp6nVjB7nkFWcn43dkprYauqtk++Py2eaf/GRDFm5BxRqEIZCiHlZUGAVmtwKcsVL1dC68WmzeFmiA==
+  dependencies:
+    "@babel/types" "^7.12.13"
+
+"@babel/helper-plugin-utils@^7.0.0", "@babel/helper-plugin-utils@^7.10.4", "@babel/helper-plugin-utils@^7.12.13", "@babel/helper-plugin-utils@^7.13.0", "@babel/helper-plugin-utils@^7.8.0":
+  version "7.13.0"
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+  integrity sha512-ZPafIPSwzUlAoWT8DKs1W2VyF2gOWthGd5NGFMsBcMMol+ZhK+EQY/e6V96poa6PA/Bh+C9plWN0hXO1uB8AfQ==
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+"@babel/helper-replace-supers@^7.13.0":
+  version "7.13.0"
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+"@babel/helper-simple-access@^7.12.13":
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+"@babel/helper-split-export-declaration@^7.12.13":
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+  resolved "https://registry.npmjs.org/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.12.13.tgz"
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+  resolved "https://registry.yarnpkg.com/@types/graceful-fs/-/graceful-fs-4.1.5.tgz#21ffba0d98da4350db64891f92a9e5db3cdb4e15"
+  integrity sha512-anKkLmZZ+xm4p8JWBf4hElkM4XR+EZeA2M9BAkkTldmcyDY4mbdIJnRghDJH3Ov5ooY7/UAoENtmdMSkaAd7Cw==
+  dependencies:
+    "@types/node" "*"
+
+"@types/istanbul-lib-coverage@*", "@types/istanbul-lib-coverage@^2.0.0", "@types/istanbul-lib-coverage@^2.0.1":
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-2.0.3.tgz#4ba8ddb720221f432e443bd5f9117fd22cfd4762"
+  integrity sha512-sz7iLqvVUg1gIedBOvlkxPlc8/uVzyS5OwGz1cKjXzkl3FpL3al0crU8YGU1WoHkxn0Wxbw5tyi6hvzJKNzFsw==
+
+"@types/istanbul-lib-report@*":
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/@types/istanbul-lib-report/-/istanbul-lib-report-3.0.0.tgz#c14c24f18ea8190c118ee7562b7ff99a36552686"
+  integrity sha512-plGgXAPfVKFoYfa9NpYDAkseG+g6Jr294RqeqcqDixSbU34MZVJRi/P+7Y8GDpzkEwLaGZZOpKIEmeVZNtKsrg==
+  dependencies:
+    "@types/istanbul-lib-coverage" "*"
+
+"@types/istanbul-reports@^3.0.0":
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/@types/istanbul-reports/-/istanbul-reports-3.0.0.tgz#508b13aa344fa4976234e75dddcc34925737d821"
+  integrity sha512-nwKNbvnwJ2/mndE9ItP/zc2TCzw6uuodnF4EHYWD+gCQDVBuRQL5UzbZD0/ezy1iKsFU2ZQiDqg4M9dN4+wZgA==
+  dependencies:
+    "@types/istanbul-lib-report" "*"
+
+"@types/node@*":
+  version "14.14.34"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-14.14.34.tgz#07935194fc049069a1c56c0c274265abeddf88da"
+  integrity sha512-dBPaxocOK6UVyvhbnpFIj2W+S+1cBTkHQbFQfeeJhoKFbzYcVUGHvddeWPSucKATb3F0+pgDq0i6ghEaZjsugA==
+
+"@types/normalize-package-data@^2.4.0":
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/@types/normalize-package-data/-/normalize-package-data-2.4.0.tgz#e486d0d97396d79beedd0a6e33f4534ff6b4973e"
+  integrity sha512-f5j5b/Gf71L+dbqxIpQ4Z2WlmI/mPJ0fOkGGmFgtb6sAu97EPczzbS3/tJKxmcYDj55OX6ssqwDAWOHIYDRDGA==
+
+"@types/prettier@^2.0.0":
+  version "2.2.2"
+  resolved "https://registry.yarnpkg.com/@types/prettier/-/prettier-2.2.2.tgz#e2280c89ddcbeef340099d6968d8c86ba155fdf6"
+  integrity sha512-i99hy7Ki19EqVOl77WplDrvgNugHnsSjECVR/wUrzw2TJXz1zlUfT2ngGckR6xN7yFYaijsMAqPkOLx9HgUqHg==
+
+"@types/stack-utils@^2.0.0":
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/@types/stack-utils/-/stack-utils-2.0.0.tgz#7036640b4e21cc2f259ae826ce843d277dad8cff"
+  integrity sha512-RJJrrySY7A8havqpGObOB4W92QXKJo63/jFLLgpvOtsGUqbQZ9Sbgl35KMm1DjC6j7AvmmU2bIno+3IyEaemaw==
+
+"@types/yargs-parser@*":
+  version "20.2.0"
+  resolved "https://registry.yarnpkg.com/@types/yargs-parser/-/yargs-parser-20.2.0.tgz#dd3e6699ba3237f0348cd085e4698780204842f9"
+  integrity sha512-37RSHht+gzzgYeobbG+KWryeAW8J33Nhr69cjTqSYymXVZEN9NbRYWoYlRtDhHKPVT1FyNKwaTPC1NynKZpzRA==
+
+"@types/yargs@^15.0.0":
+  version "15.0.13"
+  resolved "https://registry.yarnpkg.com/@types/yargs/-/yargs-15.0.13.tgz#34f7fec8b389d7f3c1fd08026a5763e072d3c6dc"
+  integrity sha512-kQ5JNTrbDv3Rp5X2n/iUu37IJBDU2gsZ5R/g1/KHOOEc5IKfUFjXT6DENPGduh08I/pamwtEq4oul7gUqKTQDQ==
+  dependencies:
+    "@types/yargs-parser" "*"
+
+abab@^2.0.3, abab@^2.0.5:
+  version "2.0.5"
+  resolved "https://registry.yarnpkg.com/abab/-/abab-2.0.5.tgz#c0b678fb32d60fc1219c784d6a826fe385aeb79a"
+  integrity sha512-9IK9EadsbHo6jLWIpxpR6pL0sazTXV6+SQv25ZB+F7Bj9mJNaOc4nCRabwd5M/JwmUa8idz6Eci6eKfJryPs6Q==
+
+acorn-globals@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/acorn-globals/-/acorn-globals-6.0.0.tgz#46cdd39f0f8ff08a876619b55f5ac8a6dc770b45"
+  integrity sha512-ZQl7LOWaF5ePqqcX4hLuv/bLXYQNfNWw2c0/yX/TsPRKamzHcTGQnlCjHT3TsmkOUVEPS3crCxiPfdzE/Trlhg==
+  dependencies:
+    acorn "^7.1.1"
+    acorn-walk "^7.1.1"
+
+acorn-walk@^7.1.1:
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/acorn-walk/-/acorn-walk-7.2.0.tgz#0de889a601203909b0fbe07b8938dc21d2e967bc"
+  integrity sha512-OPdCF6GsMIP+Az+aWfAAOEt2/+iVDKE7oy6lJ098aoe59oAmK76qV6Gw60SbZ8jHuG2wH058GF4pLFbYamYrVA==
+
+acorn@^7.1.1:
+  version "7.4.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-7.4.1.tgz#feaed255973d2e77555b83dbc08851a6c63520fa"
+  integrity sha512-nQyp0o1/mNdbTO1PO6kHkwSrmgZ0MT/jCCpNiwbUjGoRN4dlBhqJtoQuCnEOKzgTVwg0ZWiCoQy6SxMebQVh8A==
+
+acorn@^8.0.5:
+  version "8.1.0"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-8.1.0.tgz#52311fd7037ae119cbb134309e901aa46295b3fe"
+  integrity sha512-LWCF/Wn0nfHOmJ9rzQApGnxnvgfROzGilS8936rqN/lfcYkY9MYZzdMqN+2NJ4SlTc+m5HiSa+kNfDtI64dwUA==
+
+ajv@^6.12.3:
+  version "6.12.6"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.12.6.tgz#baf5a62e802b07d977034586f8c3baf5adf26df4"
+  integrity sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==
+  dependencies:
+    fast-deep-equal "^3.1.1"
+    fast-json-stable-stringify "^2.0.0"
+    json-schema-traverse "^0.4.1"
+    uri-js "^4.2.2"
+
+ansi-escapes@^4.2.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/ansi-escapes/-/ansi-escapes-4.3.1.tgz#a5c47cc43181f1f38ffd7076837700d395522a61"
+  integrity sha512-JWF7ocqNrp8u9oqpgV+wH5ftbt+cfvv+PTjOvKLT3AdYly/LmORARfEVT1iyjwN+4MqE5UmVKoAdIBqeoCHgLA==
+  dependencies:
+    type-fest "^0.11.0"
+
+ansi-regex@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-5.0.0.tgz#388539f55179bf39339c81af30a654d69f87cb75"
+  integrity sha512-bY6fj56OUQ0hU1KjFNDQuJFezqKdrAyFdIevADiqrWHwSlbmBNMHp5ak2f40Pm8JTFyM2mqxkG6ngkHO11f/lg==
+
+ansi-styles@^3.2.1:
+  version "3.2.1"
+  resolved "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz"
+  integrity sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==
+  dependencies:
+    color-convert "^1.9.0"
+
+ansi-styles@^4.0.0, ansi-styles@^4.1.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-4.3.0.tgz#edd803628ae71c04c85ae7a0906edad34b648937"
+  integrity sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==
+  dependencies:
+    color-convert "^2.0.1"
+
+anymatch@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/anymatch/-/anymatch-2.0.0.tgz#bcb24b4f37934d9aa7ac17b4adaf89e7c76ef2eb"
+  integrity sha512-5teOsQWABXHHBFP9y3skS5P3d/WfWXpv3FUpy+LorMrNYaT9pI4oLMQX7jzQ2KklNpGpWHzdCXTDT2Y3XGlZBw==
+  dependencies:
+    micromatch "^3.1.4"
+    normalize-path "^2.1.1"
+
+anymatch@^3.0.3:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/anymatch/-/anymatch-3.1.1.tgz#c55ecf02185e2469259399310c173ce31233b142"
+  integrity sha512-mM8522psRCqzV+6LhomX5wgp25YVibjh8Wj23I5RPkPppSVSjyKD2A2mBJmWGa+KN7f2D6LNh9jkBCeyLktzjg==
+  dependencies:
+    normalize-path "^3.0.0"
+    picomatch "^2.0.4"
+
+argparse@^1.0.7:
+  version "1.0.10"
+  resolved "https://registry.yarnpkg.com/argparse/-/argparse-1.0.10.tgz#bcd6791ea5ae09725e17e5ad988134cd40b3d911"
+  integrity sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==
+  dependencies:
+    sprintf-js "~1.0.2"
+
+arr-diff@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/arr-diff/-/arr-diff-4.0.0.tgz#d6461074febfec71e7e15235761a329a5dc7c520"
+  integrity sha1-1kYQdP6/7HHn4VI1dhoyml3HxSA=
+
+arr-flatten@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/arr-flatten/-/arr-flatten-1.1.0.tgz#36048bbff4e7b47e136644316c99669ea5ae91f1"
+  integrity sha512-L3hKV5R/p5o81R7O02IGnwpDmkp6E982XhtbuwSe3O4qOtMMMtodicASA1Cny2U+aCXcNpml+m4dPsvsJ3jatg==
+
+arr-union@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/arr-union/-/arr-union-3.1.0.tgz#e39b09aea9def866a8f206e288af63919bae39c4"
+  integrity sha1-45sJrqne+Gao8gbiiK9jkZuuOcQ=
+
+array-unique@^0.3.2:
+  version "0.3.2"
+  resolved "https://registry.yarnpkg.com/array-unique/-/array-unique-0.3.2.tgz#a894b75d4bc4f6cd679ef3244a9fd8f46ae2d428"
+  integrity sha1-qJS3XUvE9s1nnvMkSp/Y9Gri1Cg=
+
+asn1@~0.2.3:
+  version "0.2.4"
+  resolved "https://registry.yarnpkg.com/asn1/-/asn1-0.2.4.tgz#8d2475dfab553bb33e77b54e59e880bb8ce23136"
+  integrity sha512-jxwzQpLQjSmWXgwaCZE9Nz+glAG01yF1QnWgbhGwHI5A6FRIEY6IVqtHhIepHqI7/kyEyQEagBC5mBEFlIYvdg==
+  dependencies:
+    safer-buffer "~2.1.0"
+
+assert-plus@1.0.0, assert-plus@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/assert-plus/-/assert-plus-1.0.0.tgz#f12e0f3c5d77b0b1cdd9146942e4e96c1e4dd525"
+  integrity sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=
+
+assign-symbols@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/assign-symbols/-/assign-symbols-1.0.0.tgz#59667f41fadd4f20ccbc2bb96b8d4f7f78ec0367"
+  integrity sha1-WWZ/QfrdTyDMvCu5a41Pf3jsA2c=
+
+asynckit@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/asynckit/-/asynckit-0.4.0.tgz#c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79"
+  integrity sha1-x57Zf380y48robyXkLzDZkdLS3k=
+
+atob@^2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/atob/-/atob-2.1.2.tgz#6d9517eb9e030d2436666651e86bd9f6f13533c9"
+  integrity sha512-Wm6ukoaOGJi/73p/cl2GvLjTI5JM1k/O14isD73YML8StrH/7/lRFgmg8nICZgD3bZZvjwCGxtMOD3wWNAu8cg==
+
+aws-sign2@~0.7.0:
+  version "0.7.0"
+  resolved "https://registry.yarnpkg.com/aws-sign2/-/aws-sign2-0.7.0.tgz#b46e890934a9591f2d2f6f86d7e6a9f1b3fe76a8"
+  integrity sha1-tG6JCTSpWR8tL2+G1+ap8bP+dqg=
+
+aws4@^1.8.0:
+  version "1.11.0"
+  resolved "https://registry.yarnpkg.com/aws4/-/aws4-1.11.0.tgz#d61f46d83b2519250e2784daf5b09479a8b41c59"
+  integrity sha512-xh1Rl34h6Fi1DC2WWKfxUTVqRsNnr6LsKz2+hfwDxQJWmrx8+c7ylaqBMcHfl1U1r2dsifOvKX3LQuLNZ+XSvA==
+
+babel-jest@^26.6.3:
+  version "26.6.3"
+  resolved "https://registry.yarnpkg.com/babel-jest/-/babel-jest-26.6.3.tgz#d87d25cb0037577a0c89f82e5755c5d293c01056"
+  integrity sha512-pl4Q+GAVOHwvjrck6jKjvmGhnO3jHX/xuB9d27f+EJZ/6k+6nMuPjorrYp7s++bKKdANwzElBWnLWaObvTnaZA==
+  dependencies:
+    "@jest/transform" "^26.6.2"
+    "@jest/types" "^26.6.2"
+    "@types/babel__core" "^7.1.7"
+    babel-plugin-istanbul "^6.0.0"
+    babel-preset-jest "^26.6.2"
+    chalk "^4.0.0"
+    graceful-fs "^4.2.4"
+    slash "^3.0.0"
+
+babel-plugin-istanbul@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/babel-plugin-istanbul/-/babel-plugin-istanbul-6.0.0.tgz#e159ccdc9af95e0b570c75b4573b7c34d671d765"
+  integrity sha512-AF55rZXpe7trmEylbaE1Gv54wn6rwU03aptvRoVIGP8YykoSxqdVLV1TfwflBCE/QtHmqtP8SWlTENqbK8GCSQ==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+    "@istanbuljs/load-nyc-config" "^1.0.0"
+    "@istanbuljs/schema" "^0.1.2"
+    istanbul-lib-instrument "^4.0.0"
+    test-exclude "^6.0.0"
+
+babel-plugin-jest-hoist@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/babel-plugin-jest-hoist/-/babel-plugin-jest-hoist-26.6.2.tgz#8185bd030348d254c6d7dd974355e6a28b21e62d"
+  integrity sha512-PO9t0697lNTmcEHH69mdtYiOIkkOlj9fySqfO3K1eCcdISevLAE0xY59VLLUj0SoiPiTX/JU2CYFpILydUa5Lw==
+  dependencies:
+    "@babel/template" "^7.3.3"
+    "@babel/types" "^7.3.3"
+    "@types/babel__core" "^7.0.0"
+    "@types/babel__traverse" "^7.0.6"
+
+babel-preset-current-node-syntax@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/babel-preset-current-node-syntax/-/babel-preset-current-node-syntax-1.0.1.tgz#b4399239b89b2a011f9ddbe3e4f401fc40cff73b"
+  integrity sha512-M7LQ0bxarkxQoN+vz5aJPsLBn77n8QgTFmo8WK0/44auK2xlCXrYcUxHFxgU7qW5Yzw/CjmLRK2uJzaCd7LvqQ==
+  dependencies:
+    "@babel/plugin-syntax-async-generators" "^7.8.4"
+    "@babel/plugin-syntax-bigint" "^7.8.3"
+    "@babel/plugin-syntax-class-properties" "^7.8.3"
+    "@babel/plugin-syntax-import-meta" "^7.8.3"
+    "@babel/plugin-syntax-json-strings" "^7.8.3"
+    "@babel/plugin-syntax-logical-assignment-operators" "^7.8.3"
+    "@babel/plugin-syntax-nullish-coalescing-operator" "^7.8.3"
+    "@babel/plugin-syntax-numeric-separator" "^7.8.3"
+    "@babel/plugin-syntax-object-rest-spread" "^7.8.3"
+    "@babel/plugin-syntax-optional-catch-binding" "^7.8.3"
+    "@babel/plugin-syntax-optional-chaining" "^7.8.3"
+    "@babel/plugin-syntax-top-level-await" "^7.8.3"
+
+babel-preset-jest@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/babel-preset-jest/-/babel-preset-jest-26.6.2.tgz#747872b1171df032252426586881d62d31798fee"
+  integrity sha512-YvdtlVm9t3k777c5NPQIv6cxFFFapys25HiUmuSgHwIZhfifweR5c5Sf5nwE3MAbfu327CYSvps8Yx6ANLyleQ==
+  dependencies:
+    babel-plugin-jest-hoist "^26.6.2"
+    babel-preset-current-node-syntax "^1.0.0"
+
+balanced-match@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.0.tgz#89b4d199ab2bee49de164ea02b89ce462d71b767"
+  integrity sha1-ibTRmasr7kneFk6gK4nORi1xt2c=
+
+base@^0.11.1:
+  version "0.11.2"
+  resolved "https://registry.yarnpkg.com/base/-/base-0.11.2.tgz#7bde5ced145b6d551a90db87f83c558b4eb48a8f"
+  integrity sha512-5T6P4xPgpp0YDFvSWwEZ4NoE3aM4QBQXDzmVbraCkFj8zHM+mba8SyqB5DbZWyR7mYHo6Y7BdQo3MoA4m0TeQg==
+  dependencies:
+    cache-base "^1.0.1"
+    class-utils "^0.3.5"
+    component-emitter "^1.2.1"
+    define-property "^1.0.0"
+    isobject "^3.0.1"
+    mixin-deep "^1.2.0"
+    pascalcase "^0.1.1"
+
+bcrypt-pbkdf@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz#a4301d389b6a43f9b67ff3ca11a3f6637e360e9e"
+  integrity sha1-pDAdOJtqQ/m2f/PKEaP2Y342Dp4=
+  dependencies:
+    tweetnacl "^0.14.3"
+
+brace-expansion@^1.1.7:
+  version "1.1.11"
+  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
+  integrity sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==
+  dependencies:
+    balanced-match "^1.0.0"
+    concat-map "0.0.1"
+
+braces@^2.3.1:
+  version "2.3.2"
+  resolved "https://registry.yarnpkg.com/braces/-/braces-2.3.2.tgz#5979fd3f14cd531565e5fa2df1abfff1dfaee729"
+  integrity sha512-aNdbnj9P8PjdXU4ybaWLK2IF3jc/EoDYbC7AazW6to3TRsfXxscC9UXOB5iDiEQrkyIbWp2SLQda4+QAa7nc3w==
+  dependencies:
+    arr-flatten "^1.1.0"
+    array-unique "^0.3.2"
+    extend-shallow "^2.0.1"
+    fill-range "^4.0.0"
+    isobject "^3.0.1"
+    repeat-element "^1.1.2"
+    snapdragon "^0.8.1"
+    snapdragon-node "^2.0.1"
+    split-string "^3.0.2"
+    to-regex "^3.0.1"
+
+braces@^3.0.1:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/braces/-/braces-3.0.2.tgz#3454e1a462ee8d599e236df336cd9ea4f8afe107"
+  integrity sha512-b8um+L1RzM3WDSzvhm6gIz1yfTbBt6YTlcEKAvsmqCZZFw46z626lVj9j1yEPW33H5H+lBQpZMP1k8l+78Ha0A==
+  dependencies:
+    fill-range "^7.0.1"
+
+browser-process-hrtime@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/browser-process-hrtime/-/browser-process-hrtime-1.0.0.tgz#3c9b4b7d782c8121e56f10106d84c0d0ffc94626"
+  integrity sha512-9o5UecI3GhkpM6DrXr69PblIuWxPKk9Y0jHBRhdocZ2y7YECBFCsHm79Pr3OyR2AvjhDkabFJaDJMYRazHgsow==
+
+browserslist@^4.14.5:
+  version "4.16.3"
+  resolved "https://registry.npmjs.org/browserslist/-/browserslist-4.16.3.tgz"
+  integrity sha512-vIyhWmIkULaq04Gt93txdh+j02yX/JzlyhLYbV3YQCn/zvES3JnY7TifHHvvr1w5hTDluNKMkV05cs4vy8Q7sw==
+  dependencies:
+    caniuse-lite "^1.0.30001181"
+    colorette "^1.2.1"
+    electron-to-chromium "^1.3.649"
+    escalade "^3.1.1"
+    node-releases "^1.1.70"
+
+bser@2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/bser/-/bser-2.1.1.tgz#e6787da20ece9d07998533cfd9de6f5c38f4bc05"
+  integrity sha512-gQxTNE/GAfIIrmHLUE3oJyp5FO6HRBfhjnw4/wMmA63ZGDJnWBmgY/lyQBpnDUkGmAhbSe39tx2d/iTOAfglwQ==
+  dependencies:
+    node-int64 "^0.4.0"
+
+buffer-from@^1.0.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.1.1.tgz#32713bc028f75c02fdb710d7c7bcec1f2c6070ef"
+  integrity sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==
+
+cache-base@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/cache-base/-/cache-base-1.0.1.tgz#0a7f46416831c8b662ee36fe4e7c59d76f666ab2"
+  integrity sha512-AKcdTnFSWATd5/GCPRxr2ChwIJ85CeyrEyjRHlKxQ56d4XJMGym0uAiKn0xbLOGOl3+yRpOTi484dVCEc5AUzQ==
+  dependencies:
+    collection-visit "^1.0.0"
+    component-emitter "^1.2.1"
+    get-value "^2.0.6"
+    has-value "^1.0.0"
+    isobject "^3.0.1"
+    set-value "^2.0.0"
+    to-object-path "^0.3.0"
+    union-value "^1.0.0"
+    unset-value "^1.0.0"
+
+callsites@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/callsites/-/callsites-3.1.0.tgz#b3630abd8943432f54b3f0519238e33cd7df2f73"
+  integrity sha512-P8BjAsXvZS+VIDUI11hHCQEv74YT67YUi5JJFNWIqL235sBmjX4+qx9Muvls5ivyNENctx46xQLQ3aTuE7ssaQ==
+
+camelcase@^5.0.0, camelcase@^5.3.1:
+  version "5.3.1"
+  resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-5.3.1.tgz#e3c9b31569e106811df242f715725a1f4c494320"
+  integrity sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==
+
+camelcase@^6.0.0:
+  version "6.2.0"
+  resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-6.2.0.tgz#924af881c9d525ac9d87f40d964e5cea982a1809"
+  integrity sha512-c7wVvbw3f37nuobQNtgsgG9POC9qMbNuMQmTCqZv23b6MIz0fcYpBiOlv9gEN/hdLdnZTDQhg6e9Dq5M1vKvfg==
+
+caniuse-lite@^1.0.30001181:
+  version "1.0.30001199"
+  resolved "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001199.tgz"
+  integrity sha512-ifbK2eChUCFUwGhlEzIoVwzFt1+iriSjyKKFYNfv6hN34483wyWpLLavYQXhnR036LhkdUYaSDpHg1El++VgHQ==
+
+capture-exit@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/capture-exit/-/capture-exit-2.0.0.tgz#fb953bfaebeb781f62898239dabb426d08a509a4"
+  integrity sha512-PiT/hQmTonHhl/HFGN+Lx3JJUznrVYJ3+AQsnthneZbvW7x+f08Tk7yLJTLEOUvBTbduLeeBkxEaYXUOUrRq6g==
+  dependencies:
+    rsvp "^4.8.4"
+
+caseless@~0.12.0:
+  version "0.12.0"
+  resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.12.0.tgz#1b681c21ff84033c826543090689420d187151dc"
+  integrity sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw=
+
+chalk@^2.0.0:
+  version "2.4.2"
+  resolved "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz"
+  integrity sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==
+  dependencies:
+    ansi-styles "^3.2.1"
+    escape-string-regexp "^1.0.5"
+    supports-color "^5.3.0"
+
+chalk@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-4.1.0.tgz#4e14870a618d9e2edd97dd8345fd9d9dc315646a"
+  integrity sha512-qwx12AxXe2Q5xQ43Ac//I6v5aXTipYrSESdOgzrN+9XjgEpyjpKuvSGaN4qE93f7TQTlerQQ8S+EQ0EyDoVL1A==
+  dependencies:
+    ansi-styles "^4.1.0"
+    supports-color "^7.1.0"
+
+char-regex@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/char-regex/-/char-regex-1.0.2.tgz#d744358226217f981ed58f479b1d6bcc29545dcf"
+  integrity sha512-kWWXztvZ5SBQV+eRgKFeh8q5sLuZY2+8WUIzlxWVTg+oGwY14qylx1KbKzHd8P6ZYkAg0xyIDU9JMHhyJMZ1jw==
+
+ci-info@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/ci-info/-/ci-info-2.0.0.tgz#67a9e964be31a51e15e5010d58e6f12834002f46"
+  integrity sha512-5tK7EtrZ0N+OLFMthtqOj4fI2Jeb88C4CAZPu25LDVUgXJ0A3Js4PMGqrn0JU1W0Mh1/Z8wZzYPxqUrXeBboCQ==
+
+cjs-module-lexer@^0.6.0:
+  version "0.6.0"
+  resolved "https://registry.yarnpkg.com/cjs-module-lexer/-/cjs-module-lexer-0.6.0.tgz#4186fcca0eae175970aee870b9fe2d6cf8d5655f"
+  integrity sha512-uc2Vix1frTfnuzxxu1Hp4ktSvM3QaI4oXl4ZUqL1wjTu/BGki9TrCWoqLTg/drR1KwAEarXuRFCG2Svr1GxPFw==
+
+class-utils@^0.3.5:
+  version "0.3.6"
+  resolved "https://registry.yarnpkg.com/class-utils/-/class-utils-0.3.6.tgz#f93369ae8b9a7ce02fd41faad0ca83033190c463"
+  integrity sha512-qOhPa/Fj7s6TY8H8esGu5QNpMMQxz79h+urzrNYN6mn+9BnxlDGf5QZ+XeCDsxSjPqsSR56XOZOJmpeurnLMeg==
+  dependencies:
+    arr-union "^3.1.0"
+    define-property "^0.2.5"
+    isobject "^3.0.0"
+    static-extend "^0.1.1"
+
+cliui@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/cliui/-/cliui-6.0.0.tgz#511d702c0c4e41ca156d7d0e96021f23e13225b1"
+  integrity sha512-t6wbgtoCXvAzst7QgXxJYqPt0usEfbgQdftEPbLL/cvv6HPE5VgvqCuAIDR0NgU52ds6rFwqrgakNLrHEjCbrQ==
+  dependencies:
+    string-width "^4.2.0"
+    strip-ansi "^6.0.0"
+    wrap-ansi "^6.2.0"
+
+co@^4.6.0:
+  version "4.6.0"
+  resolved "https://registry.yarnpkg.com/co/-/co-4.6.0.tgz#6ea6bdf3d853ae54ccb8e47bfa0bf3f9031fb184"
+  integrity sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ=
+
+collect-v8-coverage@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/collect-v8-coverage/-/collect-v8-coverage-1.0.1.tgz#cc2c8e94fc18bbdffe64d6534570c8a673b27f59"
+  integrity sha512-iBPtljfCNcTKNAto0KEtDfZ3qzjJvqE3aTGZsbhjSBlorqpXJlaWWtPO35D+ZImoC3KWejX64o+yPGxhWSTzfg==
+
+collection-visit@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/collection-visit/-/collection-visit-1.0.0.tgz#4bc0373c164bc3291b4d368c829cf1a80a59dca0"
+  integrity sha1-S8A3PBZLwykbTTaMgpzxqApZ3KA=
+  dependencies:
+    map-visit "^1.0.0"
+    object-visit "^1.0.0"
+
+color-convert@^1.9.0:
+  version "1.9.3"
+  resolved "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz"
+  integrity sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==
+  dependencies:
+    color-name "1.1.3"
+
+color-convert@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-2.0.1.tgz#72d3a68d598c9bdb3af2ad1e84f21d896abd4de3"
+  integrity sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==
+  dependencies:
+    color-name "~1.1.4"
+
+color-name@1.1.3:
+  version "1.1.3"
+  resolved "https://registry.npmjs.org/color-name/-/color-name-1.1.3.tgz"
+  integrity sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=
+
+color-name@~1.1.4:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.4.tgz#c2a09a87acbde69543de6f63fa3995c826c536a2"
+  integrity sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==
+
+colorette@^1.2.1:
+  version "1.2.2"
+  resolved "https://registry.npmjs.org/colorette/-/colorette-1.2.2.tgz"
+  integrity sha512-MKGMzyfeuutC/ZJ1cba9NqcNpfeqMUcYmyF1ZFY6/Cn7CNSAKx6a+s48sqLqyAiZuaP2TcqMhoo+dlwFnVxT9w==
+
+combined-stream@^1.0.6, combined-stream@~1.0.6:
+  version "1.0.8"
+  resolved "https://registry.yarnpkg.com/combined-stream/-/combined-stream-1.0.8.tgz#c3d45a8b34fd730631a110a8a2520682b31d5a7f"
+  integrity sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==
+  dependencies:
+    delayed-stream "~1.0.0"
+
+commondir@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/commondir/-/commondir-1.0.1.tgz#ddd800da0c66127393cca5950ea968a3aaf1253b"
+  integrity sha1-3dgA2gxmEnOTzKWVDqloo6rxJTs=
+
+component-emitter@^1.2.1:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.3.0.tgz#16e4070fba8ae29b679f2215853ee181ab2eabc0"
+  integrity sha512-Rd3se6QB+sO1TwqZjscQrurpEPIfO0/yYnSin6Q/rD3mOutHvUrCAhJub3r90uNb+SESBuE0QYoB90YdfatsRg==
+
+concat-map@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
+  integrity sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=
+
+convert-source-map@^1.4.0, convert-source-map@^1.6.0, convert-source-map@^1.7.0:
+  version "1.7.0"
+  resolved "https://registry.npmjs.org/convert-source-map/-/convert-source-map-1.7.0.tgz"
+  integrity sha512-4FJkXzKXEDB1snCFZlLP4gpC3JILicCpGbzG9f9G7tGqGCzETQ2hWPrcinA9oU4wtf2biUaEH5065UnMeR33oA==
+  dependencies:
+    safe-buffer "~5.1.1"
+
+copy-descriptor@^0.1.0:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/copy-descriptor/-/copy-descriptor-0.1.1.tgz#676f6eb3c39997c2ee1ac3a924fd6124748f578d"
+  integrity sha1-Z29us8OZl8LuGsOpJP1hJHSPV40=
+
+core-util-is@1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
+  integrity sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=
+
+cross-spawn@^6.0.0:
+  version "6.0.5"
+  resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-6.0.5.tgz#4a5ec7c64dfae22c3a14124dbacdee846d80cbc4"
+  integrity sha512-eTVLrBSt7fjbDygz805pMnstIs2VTBNkRm0qxZd+M7A5XDdxVRWO5MxGBXZhjY4cqLYLdtrGqRf8mBPmzwSpWQ==
+  dependencies:
+    nice-try "^1.0.4"
+    path-key "^2.0.1"
+    semver "^5.5.0"
+    shebang-command "^1.2.0"
+    which "^1.2.9"
+
+cross-spawn@^7.0.0:
+  version "7.0.3"
+  resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-7.0.3.tgz#f73a85b9d5d41d045551c177e2882d4ac85728a6"
+  integrity sha512-iRDPJKUPVEND7dHPO8rkbOnPpyDygcDFtWjpeWNCgy8WP2rXcxXL8TskReQl6OrB2G7+UJrags1q15Fudc7G6w==
+  dependencies:
+    path-key "^3.1.0"
+    shebang-command "^2.0.0"
+    which "^2.0.1"
+
+cssom@^0.4.4:
+  version "0.4.4"
+  resolved "https://registry.yarnpkg.com/cssom/-/cssom-0.4.4.tgz#5a66cf93d2d0b661d80bf6a44fb65f5c2e4e0a10"
+  integrity sha512-p3pvU7r1MyyqbTk+WbNJIgJjG2VmTIaB10rI93LzVPrmDJKkzKYMtxxyAvQXR/NS6otuzveI7+7BBq3SjBS2mw==
+
+cssom@~0.3.6:
+  version "0.3.8"
+  resolved "https://registry.yarnpkg.com/cssom/-/cssom-0.3.8.tgz#9f1276f5b2b463f2114d3f2c75250af8c1a36f4a"
+  integrity sha512-b0tGHbfegbhPJpxpiBPU2sCkigAqtM9O121le6bbOlgyV+NyGyCmVfJ6QW9eRjz8CpNfWEOYBIMIGRYkLwsIYg==
+
+cssstyle@^2.3.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/cssstyle/-/cssstyle-2.3.0.tgz#ff665a0ddbdc31864b09647f34163443d90b0852"
+  integrity sha512-AZL67abkUzIuvcHqk7c09cezpGNcxUxU4Ioi/05xHk4DQeTkWmGYftIE6ctU6AEt+Gn4n1lDStOtj7FKycP71A==
+  dependencies:
+    cssom "~0.3.6"
+
+dashdash@^1.12.0:
+  version "1.14.1"
+  resolved "https://registry.yarnpkg.com/dashdash/-/dashdash-1.14.1.tgz#853cfa0f7cbe2fed5de20326b8dd581035f6e2f0"
+  integrity sha1-hTz6D3y+L+1d4gMmuN1YEDX24vA=
+  dependencies:
+    assert-plus "^1.0.0"
+
+data-urls@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/data-urls/-/data-urls-2.0.0.tgz#156485a72963a970f5d5821aaf642bef2bf2db9b"
+  integrity sha512-X5eWTSXO/BJmpdIKCRuKUgSCgAN0OwliVK3yPKbwIWU1Tdw5BRajxlzMidvh+gwko9AfQ9zIj52pzF91Q3YAvQ==
+  dependencies:
+    abab "^2.0.3"
+    whatwg-mimetype "^2.3.0"
+    whatwg-url "^8.0.0"
+
+debug@^2.2.0, debug@^2.3.3:
+  version "2.6.9"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
+  integrity sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==
+  dependencies:
+    ms "2.0.0"
+
+debug@^4.1.0, debug@^4.1.1:
+  version "4.3.1"
+  resolved "https://registry.npmjs.org/debug/-/debug-4.3.1.tgz"
+  integrity sha512-doEwdvm4PCeK4K3RQN2ZC2BYUBaxwLARCqZmMjtF8a51J2Rb0xpVloFRnCODwqjpwnAoao4pelN8l3RJdv3gRQ==
+  dependencies:
+    ms "2.1.2"
+
+decamelize@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
+  integrity sha1-9lNNFRSCabIDUue+4m9QH5oZEpA=
+
+decimal.js@^10.2.1:
+  version "10.2.1"
+  resolved "https://registry.yarnpkg.com/decimal.js/-/decimal.js-10.2.1.tgz#238ae7b0f0c793d3e3cea410108b35a2c01426a3"
+  integrity sha512-KaL7+6Fw6i5A2XSnsbhm/6B+NuEA7TZ4vqxnd5tXz9sbKtrN9Srj8ab4vKVdK8YAqZO9P1kg45Y6YLoduPf+kw==
+
+decode-uri-component@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/decode-uri-component/-/decode-uri-component-0.2.0.tgz#eb3913333458775cb84cd1a1fae062106bb87545"
+  integrity sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU=
+
+deep-is@~0.1.3:
+  version "0.1.3"
+  resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.3.tgz#b369d6fb5dbc13eecf524f91b070feedc357cf34"
+  integrity sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ=
+
+deepmerge@^4.2.2:
+  version "4.2.2"
+  resolved "https://registry.yarnpkg.com/deepmerge/-/deepmerge-4.2.2.tgz#44d2ea3679b8f4d4ffba33f03d865fc1e7bf4955"
+  integrity sha512-FJ3UgI4gIl+PHZm53knsuSFpE+nESMr7M4v9QcgB7S63Kj/6WqMiFQJpBBYz1Pt+66bZpP3Q7Lye0Oo9MPKEdg==
+
+define-property@^0.2.5:
+  version "0.2.5"
+  resolved "https://registry.yarnpkg.com/define-property/-/define-property-0.2.5.tgz#c35b1ef918ec3c990f9a5bc57be04aacec5c8116"
+  integrity sha1-w1se+RjsPJkPmlvFe+BKrOxcgRY=
+  dependencies:
+    is-descriptor "^0.1.0"
+
+define-property@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/define-property/-/define-property-1.0.0.tgz#769ebaaf3f4a63aad3af9e8d304c9bbe79bfb0e6"
+  integrity sha1-dp66rz9KY6rTr56NMEybvnm/sOY=
+  dependencies:
+    is-descriptor "^1.0.0"
+
+define-property@^2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/define-property/-/define-property-2.0.2.tgz#d459689e8d654ba77e02a817f8710d702cb16e9d"
+  integrity sha512-jwK2UV4cnPpbcG7+VRARKTZPUWowwXA8bzH5NP6ud0oeAxyYPuGZUAC7hMugpCdz4BeSZl2Dl9k66CHJ/46ZYQ==
+  dependencies:
+    is-descriptor "^1.0.2"
+    isobject "^3.0.1"
+
+delayed-stream@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/delayed-stream/-/delayed-stream-1.0.0.tgz#df3ae199acadfb7d440aaae0b29e2272b24ec619"
+  integrity sha1-3zrhmayt+31ECqrgsp4icrJOxhk=
+
+detect-newline@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/detect-newline/-/detect-newline-3.1.0.tgz#576f5dfc63ae1a192ff192d8ad3af6308991b651"
+  integrity sha512-TLz+x/vEXm/Y7P7wn1EJFNLxYpUD4TgMosxY6fAVJUnJMbupHBOncxyWUG9OpTaH9EBD7uFI5LfEgmMOc54DsA==
+
+diff-sequences@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/diff-sequences/-/diff-sequences-26.6.2.tgz#48ba99157de1923412eed41db6b6d4aa9ca7c0b1"
+  integrity sha512-Mv/TDa3nZ9sbc5soK+OoA74BsS3mL37yixCvUAQkiuA4Wz6YtwP/K47n2rv2ovzHZvoiQeA5FTQOschKkEwB0Q==
+
+domexception@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/domexception/-/domexception-2.0.1.tgz#fb44aefba793e1574b0af6aed2801d057529f304"
+  integrity sha512-yxJ2mFy/sibVQlu5qHjOkf9J3K6zgmCxgJ94u2EdvDOV09H+32LtRswEcUsmUWN72pVLOEnTSRaIVVzVQgS0dg==
+  dependencies:
+    webidl-conversions "^5.0.0"
+
+ecc-jsbn@~0.1.1:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/ecc-jsbn/-/ecc-jsbn-0.1.2.tgz#3a83a904e54353287874c564b7549386849a98c9"
+  integrity sha1-OoOpBOVDUyh4dMVkt1SThoSamMk=
+  dependencies:
+    jsbn "~0.1.0"
+    safer-buffer "^2.1.0"
+
+electron-to-chromium@^1.3.649:
+  version "1.3.687"
+  resolved "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.3.687.tgz"
+  integrity sha512-IpzksdQNl3wdgkzf7dnA7/v10w0Utf1dF2L+B4+gKrloBrxCut+au+kky3PYvle3RMdSxZP+UiCZtLbcYRxSNQ==
+
+emittery@^0.7.1:
+  version "0.7.2"
+  resolved "https://registry.yarnpkg.com/emittery/-/emittery-0.7.2.tgz#25595908e13af0f5674ab419396e2fb394cdfa82"
+  integrity sha512-A8OG5SR/ij3SsJdWDJdkkSYUjQdCUx6APQXem0SaEePBSRg4eymGYwBkKo1Y6DU+af/Jn2dBQqDBvjnr9Vi8nQ==
+
+emoji-regex@^8.0.0:
+  version "8.0.0"
+  resolved "https://registry.yarnpkg.com/emoji-regex/-/emoji-regex-8.0.0.tgz#e818fd69ce5ccfcb404594f842963bf53164cc37"
+  integrity sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==
+
+end-of-stream@^1.1.0:
+  version "1.4.4"
+  resolved "https://registry.yarnpkg.com/end-of-stream/-/end-of-stream-1.4.4.tgz#5ae64a5f45057baf3626ec14da0ca5e4b2431eb0"
+  integrity sha512-+uw1inIHVPQoaVuHzRyXd21icM+cnt4CzD5rW+NC1wjOUSTOs+Te7FOv7AhN7vS9x/oIyhLP5PR1H+phQAHu5Q==
+  dependencies:
+    once "^1.4.0"
+
+error-ex@^1.3.1:
+  version "1.3.2"
+  resolved "https://registry.yarnpkg.com/error-ex/-/error-ex-1.3.2.tgz#b4ac40648107fdcdcfae242f428bea8a14d4f1bf"
+  integrity sha512-7dFHNmqeFSEt2ZBsCriorKnn3Z2pj+fd9kmI6QoWw4//DL+icEBfc0U7qJCisqrTsKTjw4fNFy2pW9OqStD84g==
+  dependencies:
+    is-arrayish "^0.2.1"
+
+escalade@^3.1.1:
+  version "3.1.1"
+  resolved "https://registry.npmjs.org/escalade/-/escalade-3.1.1.tgz"
+  integrity sha512-k0er2gUkLf8O0zKJiAhmkTnJlTvINGv7ygDNPbeIsX/TJjGJZHuh9B2UxbsaEkmlEo9MfhrSzmhIlhRlI2GXnw==
+
+escape-string-regexp@^1.0.5:
+  version "1.0.5"
+  resolved "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz"
+  integrity sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=
+
+escape-string-regexp@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-2.0.0.tgz#a30304e99daa32e23b2fd20f51babd07cffca344"
+  integrity sha512-UpzcLCXolUWcNu5HtVMHYdXJjArjsF9C0aNnquZYY4uW/Vu0miy5YoWvbV345HauVvcAUnpRuhMMcqTcGOY2+w==
+
+escodegen@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/escodegen/-/escodegen-2.0.0.tgz#5e32b12833e8aa8fa35e1bf0befa89380484c7dd"
+  integrity sha512-mmHKys/C8BFUGI+MAWNcSYoORYLMdPzjrknd2Vc+bUsjN5bXcr8EhrNB+UTqfL1y3I9c4fw2ihgtMPQLBRiQxw==
+  dependencies:
+    esprima "^4.0.1"
+    estraverse "^5.2.0"
+    esutils "^2.0.2"
+    optionator "^0.8.1"
+  optionalDependencies:
+    source-map "~0.6.1"
+
+esprima@^4.0.0, esprima@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/esprima/-/esprima-4.0.1.tgz#13b04cdb3e6c5d19df91ab6987a8695619b0aa71"
+  integrity sha512-eGuFFw7Upda+g4p+QHvnW0RyTX/SVeJBDM/gCtMARO0cLuT2HcEKnTPvhjV6aGeqrCB/sbNop0Kszm0jsaWU4A==
+
+estraverse@^5.2.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/estraverse/-/estraverse-5.2.0.tgz#307df42547e6cc7324d3cf03c155d5cdb8c53880"
+  integrity sha512-BxbNGGNm0RyRYvUdHpIwv9IWzeM9XClbOxwoATuFdOE7ZE6wHL+HQ5T8hoPM+zHvmKzzsEqhgy0GrQ5X13afiQ==
+
+esutils@^2.0.2:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/esutils/-/esutils-2.0.3.tgz#74d2eb4de0b8da1293711910d50775b9b710ef64"
+  integrity sha512-kVscqXk4OCp68SZ0dkgEKVi6/8ij300KBWTJq32P/dYeWTSwK41WyTxalN1eRmA5Z9UU/LX9D7FWSmV9SAYx6g==
+
+exec-sh@^0.3.2:
+  version "0.3.4"
+  resolved "https://registry.yarnpkg.com/exec-sh/-/exec-sh-0.3.4.tgz#3a018ceb526cc6f6df2bb504b2bfe8e3a4934ec5"
+  integrity sha512-sEFIkc61v75sWeOe72qyrqg2Qg0OuLESziUDk/O/z2qgS15y2gWVFrI6f2Qn/qw/0/NCfCEsmNA4zOjkwEZT1A==
+
+execa@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/execa/-/execa-1.0.0.tgz#c6236a5bb4df6d6f15e88e7f017798216749ddd8"
+  integrity sha512-adbxcyWV46qiHyvSp50TKt05tB4tK3HcmF7/nxfAdhnox83seTDbwnaqKO4sXRy7roHAIFqJP/Rw/AuEbX61LA==
+  dependencies:
+    cross-spawn "^6.0.0"
+    get-stream "^4.0.0"
+    is-stream "^1.1.0"
+    npm-run-path "^2.0.0"
+    p-finally "^1.0.0"
+    signal-exit "^3.0.0"
+    strip-eof "^1.0.0"
+
+execa@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/execa/-/execa-4.1.0.tgz#4e5491ad1572f2f17a77d388c6c857135b22847a"
+  integrity sha512-j5W0//W7f8UxAn8hXVnwG8tLwdiUy4FJLcSupCg6maBYZDpyBvTApK7KyuI4bKj8KOh1r2YH+6ucuYtJv1bTZA==
+  dependencies:
+    cross-spawn "^7.0.0"
+    get-stream "^5.0.0"
+    human-signals "^1.1.1"
+    is-stream "^2.0.0"
+    merge-stream "^2.0.0"
+    npm-run-path "^4.0.0"
+    onetime "^5.1.0"
+    signal-exit "^3.0.2"
+    strip-final-newline "^2.0.0"
+
+exit@^0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/exit/-/exit-0.1.2.tgz#0632638f8d877cc82107d30a0fff1a17cba1cd0c"
+  integrity sha1-BjJjj42HfMghB9MKD/8aF8uhzQw=
+
+expand-brackets@^2.1.4:
+  version "2.1.4"
+  resolved "https://registry.yarnpkg.com/expand-brackets/-/expand-brackets-2.1.4.tgz#b77735e315ce30f6b6eff0f83b04151a22449622"
+  integrity sha1-t3c14xXOMPa27/D4OwQVGiJEliI=
+  dependencies:
+    debug "^2.3.3"
+    define-property "^0.2.5"
+    extend-shallow "^2.0.1"
+    posix-character-classes "^0.1.0"
+    regex-not "^1.0.0"
+    snapdragon "^0.8.1"
+    to-regex "^3.0.1"
+
+expect@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/expect/-/expect-26.6.2.tgz#c6b996bf26bf3fe18b67b2d0f51fc981ba934417"
+  integrity sha512-9/hlOBkQl2l/PLHJx6JjoDF6xPKcJEsUlWKb23rKE7KzeDqUZKXKNMW27KIue5JMdBV9HgmoJPcc8HtO85t9IA==
+  dependencies:
+    "@jest/types" "^26.6.2"
+    ansi-styles "^4.0.0"
+    jest-get-type "^26.3.0"
+    jest-matcher-utils "^26.6.2"
+    jest-message-util "^26.6.2"
+    jest-regex-util "^26.0.0"
+
+extend-shallow@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/extend-shallow/-/extend-shallow-2.0.1.tgz#51af7d614ad9a9f610ea1bafbb989d6b1c56890f"
+  integrity sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=
+  dependencies:
+    is-extendable "^0.1.0"
+
+extend-shallow@^3.0.0, extend-shallow@^3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/extend-shallow/-/extend-shallow-3.0.2.tgz#26a71aaf073b39fb2127172746131c2704028db8"
+  integrity sha1-Jqcarwc7OfshJxcnRhMcJwQCjbg=
+  dependencies:
+    assign-symbols "^1.0.0"
+    is-extendable "^1.0.1"
+
+extend@~3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.2.tgz#f8b1136b4071fbd8eb140aff858b1019ec2915fa"
+  integrity sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g==
+
+extglob@^2.0.4:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/extglob/-/extglob-2.0.4.tgz#ad00fe4dc612a9232e8718711dc5cb5ab0285543"
+  integrity sha512-Nmb6QXkELsuBr24CJSkilo6UHHgbekK5UiZgfE6UHD3Eb27YC6oD+bhcT+tJ6cl8dmsgdQxnWlcry8ksBIBLpw==
+  dependencies:
+    array-unique "^0.3.2"
+    define-property "^1.0.0"
+    expand-brackets "^2.1.4"
+    extend-shallow "^2.0.1"
+    fragment-cache "^0.2.1"
+    regex-not "^1.0.0"
+    snapdragon "^0.8.1"
+    to-regex "^3.0.1"
+
+extsprintf@1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/extsprintf/-/extsprintf-1.3.0.tgz#96918440e3041a7a414f8c52e3c574eb3c3e1e05"
+  integrity sha1-lpGEQOMEGnpBT4xS48V06zw+HgU=
+
+extsprintf@^1.2.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/extsprintf/-/extsprintf-1.4.0.tgz#e2689f8f356fad62cca65a3a91c5df5f9551692f"
+  integrity sha1-4mifjzVvrWLMplo6kcXfX5VRaS8=
+
+fast-deep-equal@^3.1.1:
+  version "3.1.3"
+  resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz#3a7d56b559d6cbc3eb512325244e619a65c6c525"
+  integrity sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==
+
+fast-json-stable-stringify@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz#874bf69c6f404c2b5d99c481341399fd55892633"
+  integrity sha512-lhd/wF+Lk98HZoTCtlVraHtfh5XYijIjalXck7saUtuanSDyLMxnHhSXEDJqHxD7msR8D0uCmqlkwjCV8xvwHw==
+
+fast-levenshtein@~2.0.6:
+  version "2.0.6"
+  resolved "https://registry.yarnpkg.com/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz#3d8a5c66883a16a30ca8643e851f19baa7797917"
+  integrity sha1-PYpcZog6FqMMqGQ+hR8Zuqd5eRc=
+
+fb-watchman@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/fb-watchman/-/fb-watchman-2.0.1.tgz#fc84fb39d2709cf3ff6d743706157bb5708a8a85"
+  integrity sha512-DkPJKQeY6kKwmuMretBhr7G6Vodr7bFwDYTXIkfG1gjvNpaxBTQV3PbXg6bR1c1UP4jPOX0jHUbbHANL9vRjVg==
+  dependencies:
+    bser "2.1.1"
+
+fill-range@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/fill-range/-/fill-range-4.0.0.tgz#d544811d428f98eb06a63dc402d2403c328c38f7"
+  integrity sha1-1USBHUKPmOsGpj3EAtJAPDKMOPc=
+  dependencies:
+    extend-shallow "^2.0.1"
+    is-number "^3.0.0"
+    repeat-string "^1.6.1"
+    to-regex-range "^2.1.0"
+
+fill-range@^7.0.1:
+  version "7.0.1"
+  resolved "https://registry.yarnpkg.com/fill-range/-/fill-range-7.0.1.tgz#1919a6a7c75fe38b2c7c77e5198535da9acdda40"
+  integrity sha512-qOo9F+dMUmC2Lcb4BbVvnKJxTPjCm+RRpe4gDuGrzkL7mEVl/djYSu2OdQ2Pa302N4oqkSg9ir6jaLWJ2USVpQ==
+  dependencies:
+    to-regex-range "^5.0.1"
+
+find-cache-dir@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/find-cache-dir/-/find-cache-dir-2.1.0.tgz#8d0f94cd13fe43c6c7c261a0d86115ca918c05f7"
+  integrity sha512-Tq6PixE0w/VMFfCgbONnkiQIVol/JJL7nRMi20fqzA4NRs9AfeqMGeRdPi3wIhYkxjeBaWh2rxwapn5Tu3IqOQ==
+  dependencies:
+    commondir "^1.0.1"
+    make-dir "^2.0.0"
+    pkg-dir "^3.0.0"
+
+find-up@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/find-up/-/find-up-3.0.0.tgz#49169f1d7993430646da61ecc5ae355c21c97b73"
+  integrity sha512-1yD6RmLI1XBfxugvORwlck6f75tYL+iR0jqwsOrOxMZyGYqUuDhJ0l4AXdO1iX/FTs9cBAMEk1gWSEx1kSbylg==
+  dependencies:
+    locate-path "^3.0.0"
+
+find-up@^4.0.0, find-up@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/find-up/-/find-up-4.1.0.tgz#97afe7d6cdc0bc5928584b7c8d7b16e8a9aa5d19"
+  integrity sha512-PpOwAdQ/YlXQ2vj8a3h8IipDuYRi3wceVQQGYWxNINccq40Anw7BlsEXCMbt1Zt+OLA6Fq9suIpIWD0OsnISlw==
+  dependencies:
+    locate-path "^5.0.0"
+    path-exists "^4.0.0"
+
+for-in@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/for-in/-/for-in-1.0.2.tgz#81068d295a8142ec0ac726c6e2200c30fb6d5e80"
+  integrity sha1-gQaNKVqBQuwKxybG4iAMMPttXoA=
+
+forever-agent@~0.6.1:
+  version "0.6.1"
+  resolved "https://registry.yarnpkg.com/forever-agent/-/forever-agent-0.6.1.tgz#fbc71f0c41adeb37f96c577ad1ed42d8fdacca91"
+  integrity sha1-+8cfDEGt6zf5bFd60e1C2P2sypE=
+
+form-data@~2.3.2:
+  version "2.3.3"
+  resolved "https://registry.yarnpkg.com/form-data/-/form-data-2.3.3.tgz#dcce52c05f644f298c6a7ab936bd724ceffbf3a6"
+  integrity sha512-1lLKB2Mu3aGP1Q/2eCOx0fNbRMe7XdwktwOruhfqqd0rIJWwN4Dh+E3hrPSlDCXnSR7UtZ1N38rVXm+6+MEhJQ==
+  dependencies:
+    asynckit "^0.4.0"
+    combined-stream "^1.0.6"
+    mime-types "^2.1.12"
+
+fragment-cache@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/fragment-cache/-/fragment-cache-0.2.1.tgz#4290fad27f13e89be7f33799c6bc5a0abfff0d19"
+  integrity sha1-QpD60n8T6Jvn8zeZxrxaCr//DRk=
+  dependencies:
+    map-cache "^0.2.2"
+
+fs.realpath@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
+  integrity sha1-FQStJSMVjKpA20onh8sBQRmU6k8=
+
+fsevents@^2.1.2:
+  version "2.3.2"
+  resolved "https://registry.yarnpkg.com/fsevents/-/fsevents-2.3.2.tgz#8a526f78b8fdf4623b709e0b975c52c24c02fd1a"
+  integrity sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==
+
+function-bind@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/function-bind/-/function-bind-1.1.1.tgz#a56899d3ea3c9bab874bb9773b7c5ede92f4895d"
+  integrity sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A==
+
+gensync@^1.0.0-beta.2:
+  version "1.0.0-beta.2"
+  resolved "https://registry.npmjs.org/gensync/-/gensync-1.0.0-beta.2.tgz"
+  integrity sha512-3hN7NaskYvMDLQY55gnW3NQ+mesEAepTqlg+VEbj7zzqEMBVNhzcGYYeqFo/TlYz6eQiFcp1HcsCZO+nGgS8zg==
+
+get-caller-file@^2.0.1:
+  version "2.0.5"
+  resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-2.0.5.tgz#4f94412a82db32f36e3b0b9741f8a97feb031f7e"
+  integrity sha512-DyFP3BM/3YHTQOCUL/w0OZHR0lpKeGrxotcHWcqNEdnltqFwXVfhEBQ94eIo34AfQpo0rGki4cyIiftY06h2Fg==
+
+get-package-type@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/get-package-type/-/get-package-type-0.1.0.tgz#8de2d803cff44df3bc6c456e6668b36c3926e11a"
+  integrity sha512-pjzuKtY64GYfWizNAJ0fr9VqttZkNiK2iS430LtIHzjBEr6bX8Am2zm4sW4Ro5wjWW5cAlRL1qAMTcXbjNAO2Q==
+
+get-stream@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-4.1.0.tgz#c1b255575f3dc21d59bfc79cd3d2b46b1c3a54b5"
+  integrity sha512-GMat4EJ5161kIy2HevLlr4luNjBgvmj413KaQA7jt4V8B4RDsfpHk7WQ9GVqfYyyx8OS/L66Kox+rJRNklLK7w==
+  dependencies:
+    pump "^3.0.0"
+
+get-stream@^5.0.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-5.2.0.tgz#4966a1795ee5ace65e706c4b7beb71257d6e22d3"
+  integrity sha512-nBF+F1rAZVCu/p7rjzgA+Yb4lfYXrpl7a6VmJrU8wF9I1CKvP/QwPNZHnOlwbTkY6dvtFIzFMSyQXbLoTQPRpA==
+  dependencies:
+    pump "^3.0.0"
+
+get-value@^2.0.3, get-value@^2.0.6:
+  version "2.0.6"
+  resolved "https://registry.yarnpkg.com/get-value/-/get-value-2.0.6.tgz#dc15ca1c672387ca76bd37ac0a395ba2042a2c28"
+  integrity sha1-3BXKHGcjh8p2vTesCjlbogQqLCg=
+
+getpass@^0.1.1:
+  version "0.1.7"
+  resolved "https://registry.yarnpkg.com/getpass/-/getpass-0.1.7.tgz#5eff8e3e684d569ae4cb2b1282604e8ba62149fa"
+  integrity sha1-Xv+OPmhNVprkyysSgmBOi6YhSfo=
+  dependencies:
+    assert-plus "^1.0.0"
+
+glob@^7.1.1, glob@^7.1.2, glob@^7.1.3, glob@^7.1.4:
+  version "7.1.6"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.6.tgz#141f33b81a7c2492e125594307480c46679278a6"
+  integrity sha512-LwaxwyZ72Lk7vZINtNNrywX0ZuLyStrdDtabefZKAY5ZGJhVtgdznluResxNmPitE0SAO+O26sWTHeKSI2wMBA==
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.4"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
+globals@^11.1.0:
+  version "11.12.0"
+  resolved "https://registry.npmjs.org/globals/-/globals-11.12.0.tgz"
+  integrity sha512-WOBp/EEGUiIsJSp7wcv/y6MO+lV9UoncWqxuFfm8eBwzWNgyfBd6Gz+IeKQ9jCmyhoH99g15M3T+QaVHFjizVA==
+
+graceful-fs@^4.2.4:
+  version "4.2.6"
+  resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.2.6.tgz#ff040b2b0853b23c3d31027523706f1885d76bee"
+  integrity sha512-nTnJ528pbqxYanhpDYsi4Rd8MAeaBA67+RZ10CM1m3bTAVFEDcd5AuA4a6W5YkGZ1iNXHzZz8T6TBKLeBuNriQ==
+
+growly@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/growly/-/growly-1.3.0.tgz#f10748cbe76af964b7c96c93c6bcc28af120c081"
+  integrity sha1-8QdIy+dq+WS3yWyTxrzCivEgwIE=
+
+har-schema@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/har-schema/-/har-schema-2.0.0.tgz#a94c2224ebcac04782a0d9035521f24735b7ec92"
+  integrity sha1-qUwiJOvKwEeCoNkDVSHyRzW37JI=
+
+har-validator@~5.1.3:
+  version "5.1.5"
+  resolved "https://registry.yarnpkg.com/har-validator/-/har-validator-5.1.5.tgz#1f0803b9f8cb20c0fa13822df1ecddb36bde1efd"
+  integrity sha512-nmT2T0lljbxdQZfspsno9hgrG3Uir6Ks5afism62poxqBM6sDnMEuPmzTq8XN0OEwqKLLdh1jQI3qyE66Nzb3w==
+  dependencies:
+    ajv "^6.12.3"
+    har-schema "^2.0.0"
+
+has-flag@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz"
+  integrity sha1-tdRU3CGZriJWmfNGfloH87lVuv0=
+
+has-flag@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-4.0.0.tgz#944771fd9c81c81265c4d6941860da06bb59479b"
+  integrity sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==
+
+has-value@^0.3.1:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/has-value/-/has-value-0.3.1.tgz#7b1f58bada62ca827ec0a2078025654845995e1f"
+  integrity sha1-ex9YutpiyoJ+wKIHgCVlSEWZXh8=
+  dependencies:
+    get-value "^2.0.3"
+    has-values "^0.1.4"
+    isobject "^2.0.0"
+
+has-value@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/has-value/-/has-value-1.0.0.tgz#18b281da585b1c5c51def24c930ed29a0be6b177"
+  integrity sha1-GLKB2lhbHFxR3vJMkw7SmgvmsXc=
+  dependencies:
+    get-value "^2.0.6"
+    has-values "^1.0.0"
+    isobject "^3.0.0"
+
+has-values@^0.1.4:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/has-values/-/has-values-0.1.4.tgz#6d61de95d91dfca9b9a02089ad384bff8f62b771"
+  integrity sha1-bWHeldkd/Km5oCCJrThL/49it3E=
+
+has-values@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/has-values/-/has-values-1.0.0.tgz#95b0b63fec2146619a6fe57fe75628d5a39efe4f"
+  integrity sha1-lbC2P+whRmGab+V/51Yo1aOe/k8=
+  dependencies:
+    is-number "^3.0.0"
+    kind-of "^4.0.0"
+
+has@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/has/-/has-1.0.3.tgz#722d7cbfc1f6aa8241f16dd814e011e1f41e8796"
+  integrity sha512-f2dvO0VU6Oej7RkWJGrehjbzMAjFp5/VKPp5tTpWIV4JHHZK1/BxbFRtf/siA2SWTe09caDmVtYYzWEIbBS4zw==
+  dependencies:
+    function-bind "^1.1.1"
+
+hosted-git-info@^2.1.4:
+  version "2.8.8"
+  resolved "https://registry.yarnpkg.com/hosted-git-info/-/hosted-git-info-2.8.8.tgz#7539bd4bc1e0e0a895815a2e0262420b12858488"
+  integrity sha512-f/wzC2QaWBs7t9IYqB4T3sR1xviIViXJRJTWBlx2Gf3g0Xi5vI7Yy4koXQ1c9OYDGHN9sBy1DQ2AB8fqZBWhUg==
+
+html-encoding-sniffer@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/html-encoding-sniffer/-/html-encoding-sniffer-2.0.1.tgz#42a6dc4fd33f00281176e8b23759ca4e4fa185f3"
+  integrity sha512-D5JbOMBIR/TVZkubHT+OyT2705QvogUW4IBn6nHd756OwieSF9aDYFj4dv6HHEVGYbHaLETa3WggZYWWMyy3ZQ==
+  dependencies:
+    whatwg-encoding "^1.0.5"
+
+html-escaper@^2.0.0:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/html-escaper/-/html-escaper-2.0.2.tgz#dfd60027da36a36dfcbe236262c00a5822681453"
+  integrity sha512-H2iMtd0I4Mt5eYiapRdIDjp+XzelXQ0tFE4JS7YFwFevXXMmOp9myNrUvCg0D6ws8iqkRPBfKHgbwig1SmlLfg==
+
+http-signature@~1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/http-signature/-/http-signature-1.2.0.tgz#9aecd925114772f3d95b65a60abb8f7c18fbace1"
+  integrity sha1-muzZJRFHcvPZW2WmCruPfBj7rOE=
+  dependencies:
+    assert-plus "^1.0.0"
+    jsprim "^1.2.2"
+    sshpk "^1.7.0"
+
+human-signals@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/human-signals/-/human-signals-1.1.1.tgz#c5b1cd14f50aeae09ab6c59fe63ba3395fe4dfa3"
+  integrity sha512-SEQu7vl8KjNL2eoGBLF3+wAjpsNfA9XMlXAYj/3EdaNfAlxKthD1xjEQfGOUhllCGGJVNY34bRr6lPINhNjyZw==
+
+iconv-lite@0.4.24:
+  version "0.4.24"
+  resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.24.tgz#2022b4b25fbddc21d2f524974a474aafe733908b"
+  integrity sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==
+  dependencies:
+    safer-buffer ">= 2.1.2 < 3"
+
+import-local@^3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/import-local/-/import-local-3.0.2.tgz#a8cfd0431d1de4a2199703d003e3e62364fa6db6"
+  integrity sha512-vjL3+w0oulAVZ0hBHnxa/Nm5TAurf9YLQJDhqRZyqb+VKGOB6LU8t9H1Nr5CIo16vh9XfJTOoHwU0B71S557gA==
+  dependencies:
+    pkg-dir "^4.2.0"
+    resolve-cwd "^3.0.0"
+
+imurmurhash@^0.1.4:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/imurmurhash/-/imurmurhash-0.1.4.tgz#9218b9b2b928a238b13dc4fb6b6d576f231453ea"
+  integrity sha1-khi5srkoojixPcT7a21XbyMUU+o=
+
+inflight@^1.0.4:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/inflight/-/inflight-1.0.6.tgz#49bd6331d7d02d0c09bc910a1075ba8165b56df9"
+  integrity sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=
+  dependencies:
+    once "^1.3.0"
+    wrappy "1"
+
+inherits@2:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.4.tgz#0fa2c64f932917c3433a0ded55363aae37416b7c"
+  integrity sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==
+
+is-accessor-descriptor@^0.1.6:
+  version "0.1.6"
+  resolved "https://registry.yarnpkg.com/is-accessor-descriptor/-/is-accessor-descriptor-0.1.6.tgz#a9e12cb3ae8d876727eeef3843f8a0897b5c98d6"
+  integrity sha1-qeEss66Nh2cn7u84Q/igiXtcmNY=
+  dependencies:
+    kind-of "^3.0.2"
+
+is-accessor-descriptor@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-accessor-descriptor/-/is-accessor-descriptor-1.0.0.tgz#169c2f6d3df1f992618072365c9b0ea1f6878656"
+  integrity sha512-m5hnHTkcVsPfqx3AKlyttIPb7J+XykHvJP2B9bZDjlhLIoEq4XoK64Vg7boZlVWYK6LUY94dYPEE7Lh0ZkZKcQ==
+  dependencies:
+    kind-of "^6.0.0"
+
+is-arrayish@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/is-arrayish/-/is-arrayish-0.2.1.tgz#77c99840527aa8ecb1a8ba697b80645a7a926a9d"
+  integrity sha1-d8mYQFJ6qOyxqLppe4BkWnqSap0=
+
+is-buffer@^1.1.5:
+  version "1.1.6"
+  resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-1.1.6.tgz#efaa2ea9daa0d7ab2ea13a97b2b8ad51fefbe8be"
+  integrity sha512-NcdALwpXkTm5Zvvbk7owOUSvVvBKDgKP5/ewfXEznmQFfs4ZRmanOeKBTjRVjka3QFoN6XJ+9F3USqfHqTaU5w==
+
+is-ci@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/is-ci/-/is-ci-2.0.0.tgz#6bc6334181810e04b5c22b3d589fdca55026404c"
+  integrity sha512-YfJT7rkpQB0updsdHLGWrvhBJfcfzNNawYDNIyQXJz0IViGf75O8EBPKSdvw2rF+LGCsX4FZ8tcr3b19LcZq4w==
+  dependencies:
+    ci-info "^2.0.0"
+
+is-core-module@^2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/is-core-module/-/is-core-module-2.2.0.tgz#97037ef3d52224d85163f5597b2b63d9afed981a"
+  integrity sha512-XRAfAdyyY5F5cOXn7hYQDqh2Xmii+DEfIcQGxK/uNwMHhIkPWO0g8msXcbzLe+MpGoR951MlqM/2iIlU4vKDdQ==
+  dependencies:
+    has "^1.0.3"
+
+is-data-descriptor@^0.1.4:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz#0b5ee648388e2c860282e793f1856fec3f301b56"
+  integrity sha1-C17mSDiOLIYCgueT8YVv7D8wG1Y=
+  dependencies:
+    kind-of "^3.0.2"
+
+is-data-descriptor@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-data-descriptor/-/is-data-descriptor-1.0.0.tgz#d84876321d0e7add03990406abbbbd36ba9268c7"
+  integrity sha512-jbRXy1FmtAoCjQkVmIVYwuuqDFUbaOeDjmed1tOGPrsMhtJA4rD9tkgA0F1qJ3gRFRXcHYVkdeaP50Q5rE/jLQ==
+  dependencies:
+    kind-of "^6.0.0"
+
+is-descriptor@^0.1.0:
+  version "0.1.6"
+  resolved "https://registry.yarnpkg.com/is-descriptor/-/is-descriptor-0.1.6.tgz#366d8240dde487ca51823b1ab9f07a10a78251ca"
+  integrity sha512-avDYr0SB3DwO9zsMov0gKCESFYqCnE4hq/4z3TdUlukEy5t9C0YRq7HLrsN52NAcqXKaepeCD0n+B0arnVG3Hg==
+  dependencies:
+    is-accessor-descriptor "^0.1.6"
+    is-data-descriptor "^0.1.4"
+    kind-of "^5.0.0"
+
+is-descriptor@^1.0.0, is-descriptor@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/is-descriptor/-/is-descriptor-1.0.2.tgz#3b159746a66604b04f8c81524ba365c5f14d86ec"
+  integrity sha512-2eis5WqQGV7peooDyLmNEPUrps9+SXX5c9pL3xEB+4e9HnGuDa7mB7kHxHw4CbqS9k1T2hOH3miL8n8WtiYVtg==
+  dependencies:
+    is-accessor-descriptor "^1.0.0"
+    is-data-descriptor "^1.0.0"
+    kind-of "^6.0.2"
+
+is-docker@^2.0.0:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/is-docker/-/is-docker-2.1.1.tgz#4125a88e44e450d384e09047ede71adc2d144156"
+  integrity sha512-ZOoqiXfEwtGknTiuDEy8pN2CfE3TxMHprvNer1mXiqwkOT77Rw3YVrUQ52EqAOU3QAWDQ+bQdx7HJzrv7LS2Hw==
+
+is-extendable@^0.1.0, is-extendable@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/is-extendable/-/is-extendable-0.1.1.tgz#62b110e289a471418e3ec36a617d472e301dfc89"
+  integrity sha1-YrEQ4omkcUGOPsNqYX1HLjAd/Ik=
+
+is-extendable@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/is-extendable/-/is-extendable-1.0.1.tgz#a7470f9e426733d81bd81e1155264e3a3507cab4"
+  integrity sha512-arnXMxT1hhoKo9k1LZdmlNyJdDDfy2v0fXjFlmok4+i8ul/6WlbVge9bhM74OpNPQPMGUToDtz+KXa1PneJxOA==
+  dependencies:
+    is-plain-object "^2.0.4"
+
+is-fullwidth-code-point@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/is-fullwidth-code-point/-/is-fullwidth-code-point-3.0.0.tgz#f116f8064fe90b3f7844a38997c0b75051269f1d"
+  integrity sha512-zymm5+u+sCsSWyD9qNaejV3DFvhCKclKdizYaJUuHA83RLjb7nSuGnddCHGv0hk+KY7BMAlsWeK4Ueg6EV6XQg==
+
+is-generator-fn@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/is-generator-fn/-/is-generator-fn-2.1.0.tgz#7d140adc389aaf3011a8f2a2a4cfa6faadffb118"
+  integrity sha512-cTIB4yPYL/Grw0EaSzASzg6bBy9gqCofvWN8okThAYIxKJZC+udlRAmGbM0XLeniEJSs8uEgHPGuHSe1XsOLSQ==
+
+is-number@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/is-number/-/is-number-3.0.0.tgz#24fd6201a4782cf50561c810276afc7d12d71195"
+  integrity sha1-JP1iAaR4LPUFYcgQJ2r8fRLXEZU=
+  dependencies:
+    kind-of "^3.0.2"
+
+is-number@^7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/is-number/-/is-number-7.0.0.tgz#7535345b896734d5f80c4d06c50955527a14f12b"
+  integrity sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng==
+
+is-plain-object@^2.0.3, is-plain-object@^2.0.4:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/is-plain-object/-/is-plain-object-2.0.4.tgz#2c163b3fafb1b606d9d17928f05c2a1c38e07677"
+  integrity sha512-h5PpgXkWitc38BBMYawTYMWJHFZJVnBquFE57xFpjB8pJFiF6gZ+bU+WyI/yqXiFR5mdLsgYNaPe8uao6Uv9Og==
+  dependencies:
+    isobject "^3.0.1"
+
+is-potential-custom-element-name@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-potential-custom-element-name/-/is-potential-custom-element-name-1.0.0.tgz#0c52e54bcca391bb2c494b21e8626d7336c6e397"
+  integrity sha1-DFLlS8yjkbssSUsh6GJtczbG45c=
+
+is-stream@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/is-stream/-/is-stream-1.1.0.tgz#12d4a3dd4e68e0b79ceb8dbc84173ae80d91ca44"
+  integrity sha1-EtSj3U5o4Lec6428hBc66A2RykQ=
+
+is-stream@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/is-stream/-/is-stream-2.0.0.tgz#bde9c32680d6fae04129d6ac9d921ce7815f78e3"
+  integrity sha512-XCoy+WlUr7d1+Z8GgSuXmpuUFC9fOhRXglJMx+dwLKTkL44Cjd4W1Z5P+BQZpr+cR93aGP4S/s7Ftw6Nd/kiEw==
+
+is-typedarray@^1.0.0, is-typedarray@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-typedarray/-/is-typedarray-1.0.0.tgz#e479c80858df0c1b11ddda6940f96011fcda4a9a"
+  integrity sha1-5HnICFjfDBsR3dppQPlgEfzaSpo=
+
+is-windows@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/is-windows/-/is-windows-1.0.2.tgz#d1850eb9791ecd18e6182ce12a30f396634bb19d"
+  integrity sha512-eXK1UInq2bPmjyX6e3VHIzMLobc4J94i4AWn+Hpq3OU5KkrRC96OAcR3PRJ/pGu6m8TRnBHP9dkXQVsT/COVIA==
+
+is-wsl@^2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/is-wsl/-/is-wsl-2.2.0.tgz#74a4c76e77ca9fd3f932f290c17ea326cd157271"
+  integrity sha512-fKzAra0rGJUUBwGBgNkHZuToZcn+TtXHpeCgmkMJMMYx1sQDYaCSyjJBSCa2nH1DGm7s3n1oBnohoVTBaN7Lww==
+  dependencies:
+    is-docker "^2.0.0"
+
+isarray@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
+  integrity sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE=
+
+isexe@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/isexe/-/isexe-2.0.0.tgz#e8fbf374dc556ff8947a10dcb0572d633f2cfa10"
+  integrity sha1-6PvzdNxVb/iUehDcsFctYz8s+hA=
+
+isobject@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/isobject/-/isobject-2.1.0.tgz#f065561096a3f1da2ef46272f815c840d87e0c89"
+  integrity sha1-8GVWEJaj8dou9GJy+BXIQNh+DIk=
+  dependencies:
+    isarray "1.0.0"
+
+isobject@^3.0.0, isobject@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/isobject/-/isobject-3.0.1.tgz#4e431e92b11a9731636aa1f9c8d1ccbcfdab78df"
+  integrity sha1-TkMekrEalzFjaqH5yNHMvP2reN8=
+
+isstream@~0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/isstream/-/isstream-0.1.2.tgz#47e63f7af55afa6f92e1500e690eb8b8529c099a"
+  integrity sha1-R+Y/evVa+m+S4VAOaQ64uFKcCZo=
+
+istanbul-lib-coverage@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/istanbul-lib-coverage/-/istanbul-lib-coverage-3.0.0.tgz#f5944a37c70b550b02a78a5c3b2055b280cec8ec"
+  integrity sha512-UiUIqxMgRDET6eR+o5HbfRYP1l0hqkWOs7vNxC/mggutCMUIhWMm8gAHb8tHlyfD3/l6rlgNA5cKdDzEAf6hEg==
+
+istanbul-lib-instrument@^4.0.0, istanbul-lib-instrument@^4.0.3:
+  version "4.0.3"
+  resolved "https://registry.yarnpkg.com/istanbul-lib-instrument/-/istanbul-lib-instrument-4.0.3.tgz#873c6fff897450118222774696a3f28902d77c1d"
+  integrity sha512-BXgQl9kf4WTCPCCpmFGoJkz/+uhvm7h7PFKUYxh7qarQd3ER33vHG//qaE8eN25l07YqZPpHXU9I09l/RD5aGQ==
+  dependencies:
+    "@babel/core" "^7.7.5"
+    "@istanbuljs/schema" "^0.1.2"
+    istanbul-lib-coverage "^3.0.0"
+    semver "^6.3.0"
+
+istanbul-lib-report@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/istanbul-lib-report/-/istanbul-lib-report-3.0.0.tgz#7518fe52ea44de372f460a76b5ecda9ffb73d8a6"
+  integrity sha512-wcdi+uAKzfiGT2abPpKZ0hSU1rGQjUQnLvtY5MpQ7QCTahD3VODhcu4wcfY1YtkGaDD5yuydOLINXsfbus9ROw==
+  dependencies:
+    istanbul-lib-coverage "^3.0.0"
+    make-dir "^3.0.0"
+    supports-color "^7.1.0"
+
+istanbul-lib-source-maps@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/istanbul-lib-source-maps/-/istanbul-lib-source-maps-4.0.0.tgz#75743ce6d96bb86dc7ee4352cf6366a23f0b1ad9"
+  integrity sha512-c16LpFRkR8vQXyHZ5nLpY35JZtzj1PQY1iZmesUbf1FZHbIupcWfjgOXBY9YHkLEQ6puz1u4Dgj6qmU/DisrZg==
+  dependencies:
+    debug "^4.1.1"
+    istanbul-lib-coverage "^3.0.0"
+    source-map "^0.6.1"
+
+istanbul-reports@^3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/istanbul-reports/-/istanbul-reports-3.0.2.tgz#d593210e5000683750cb09fc0644e4b6e27fd53b"
+  integrity sha512-9tZvz7AiR3PEDNGiV9vIouQ/EAcqMXFmkcA1CDFTwOB98OZVDL0PH9glHotf5Ugp6GCOTypfzGWI/OqjWNCRUw==
+  dependencies:
+    html-escaper "^2.0.0"
+    istanbul-lib-report "^3.0.0"
+
+jest-changed-files@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/jest-changed-files/-/jest-changed-files-26.6.2.tgz#f6198479e1cc66f22f9ae1e22acaa0b429c042d0"
+  integrity sha512-fDS7szLcY9sCtIip8Fjry9oGf3I2ht/QT21bAHm5Dmf0mD4X3ReNUf17y+bO6fR8WgbIZTlbyG1ak/53cbRzKQ==
+  dependencies:
+    "@jest/types" "^26.6.2"
+    execa "^4.0.0"
+    throat "^5.0.0"
+
+jest-cli@^26.6.3:
+  version "26.6.3"
+  resolved "https://registry.yarnpkg.com/jest-cli/-/jest-cli-26.6.3.tgz#43117cfef24bc4cd691a174a8796a532e135e92a"
+  integrity sha512-GF9noBSa9t08pSyl3CY4frMrqp+aQXFGFkf5hEPbh/pIUFYWMK6ZLTfbmadxJVcJrdRoChlWQsA2VkJcDFK8hg==
+  dependencies:
+    "@jest/core" "^26.6.3"
+    "@jest/test-result" "^26.6.2"
+    "@jest/types" "^26.6.2"
+    chalk "^4.0.0"
+    exit "^0.1.2"
+    graceful-fs "^4.2.4"
+    import-local "^3.0.2"
+    is-ci "^2.0.0"
+    jest-config "^26.6.3"
+    jest-util "^26.6.2"
+    jest-validate "^26.6.2"
+    prompts "^2.0.1"
+    yargs "^15.4.1"
+
+jest-config@^26.6.3:
+  version "26.6.3"
+  resolved "https://registry.yarnpkg.com/jest-config/-/jest-config-26.6.3.tgz#64f41444eef9eb03dc51d5c53b75c8c71f645349"
+  integrity sha512-t5qdIj/bCj2j7NFVHb2nFB4aUdfucDn3JRKgrZnplb8nieAirAzRSHP8uDEd+qV6ygzg9Pz4YG7UTJf94LPSyg==
+  dependencies:
+    "@babel/core" "^7.1.0"
+    "@jest/test-sequencer" "^26.6.3"
+    "@jest/types" "^26.6.2"
+    babel-jest "^26.6.3"
+    chalk "^4.0.0"
+    deepmerge "^4.2.2"
+    glob "^7.1.1"
+    graceful-fs "^4.2.4"
+    jest-environment-jsdom "^26.6.2"
+    jest-environment-node "^26.6.2"
+    jest-get-type "^26.3.0"
+    jest-jasmine2 "^26.6.3"
+    jest-regex-util "^26.0.0"
+    jest-resolve "^26.6.2"
+    jest-util "^26.6.2"
+    jest-validate "^26.6.2"
+    micromatch "^4.0.2"
+    pretty-format "^26.6.2"
+
+jest-diff@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/jest-diff/-/jest-diff-26.6.2.tgz#1aa7468b52c3a68d7d5c5fdcdfcd5e49bd164394"
+  integrity sha512-6m+9Z3Gv9wN0WFVasqjCL/06+EFCMTqDEUl/b87HYK2rAPTyfz4ZIuSlPhY51PIQRWx5TaxeF1qmXKe9gfN3sA==
+  dependencies:
+    chalk "^4.0.0"
+    diff-sequences "^26.6.2"
+    jest-get-type "^26.3.0"
+    pretty-format "^26.6.2"
+
+jest-docblock@^26.0.0:
+  version "26.0.0"
+  resolved "https://registry.yarnpkg.com/jest-docblock/-/jest-docblock-26.0.0.tgz#3e2fa20899fc928cb13bd0ff68bd3711a36889b5"
+  integrity sha512-RDZ4Iz3QbtRWycd8bUEPxQsTlYazfYn/h5R65Fc6gOfwozFhoImx+affzky/FFBuqISPTqjXomoIGJVKBWoo0w==
+  dependencies:
+    detect-newline "^3.0.0"
+
+jest-each@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/jest-each/-/jest-each-26.6.2.tgz#02526438a77a67401c8a6382dfe5999952c167cb"
+  integrity sha512-Mer/f0KaATbjl8MCJ+0GEpNdqmnVmDYqCTJYTvoo7rqmRiDllmp2AYN+06F93nXcY3ur9ShIjS+CO/uD+BbH4A==
+  dependencies:
+    "@jest/types" "^26.6.2"
+    chalk "^4.0.0"
+    jest-get-type "^26.3.0"
+    jest-util "^26.6.2"
+    pretty-format "^26.6.2"
+
+jest-environment-jsdom@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/jest-environment-jsdom/-/jest-environment-jsdom-26.6.2.tgz#78d09fe9cf019a357009b9b7e1f101d23bd1da3e"
+  integrity sha512-jgPqCruTlt3Kwqg5/WVFyHIOJHsiAvhcp2qiR2QQstuG9yWox5+iHpU3ZrcBxW14T4fe5Z68jAfLRh7joCSP2Q==
+  dependencies:
+    "@jest/environment" "^26.6.2"
+    "@jest/fake-timers" "^26.6.2"
+    "@jest/types" "^26.6.2"
+    "@types/node" "*"
+    jest-mock "^26.6.2"
+    jest-util "^26.6.2"
+    jsdom "^16.4.0"
+
+jest-environment-node@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/jest-environment-node/-/jest-environment-node-26.6.2.tgz#824e4c7fb4944646356f11ac75b229b0035f2b0c"
+  integrity sha512-zhtMio3Exty18dy8ee8eJ9kjnRyZC1N4C1Nt/VShN1apyXc8rWGtJ9lI7vqiWcyyXS4BVSEn9lxAM2D+07/Tag==
+  dependencies:
+    "@jest/environment" "^26.6.2"
+    "@jest/fake-timers" "^26.6.2"
+    "@jest/types" "^26.6.2"
+    "@types/node" "*"
+    jest-mock "^26.6.2"
+    jest-util "^26.6.2"
+
+jest-get-type@^26.3.0:
+  version "26.3.0"
+  resolved "https://registry.yarnpkg.com/jest-get-type/-/jest-get-type-26.3.0.tgz#e97dc3c3f53c2b406ca7afaed4493b1d099199e0"
+  integrity sha512-TpfaviN1R2pQWkIihlfEanwOXK0zcxrKEE4MlU6Tn7keoXdN6/3gK/xl0yEh8DOunn5pOVGKf8hB4R9gVh04ig==
+
+jest-haste-map@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/jest-haste-map/-/jest-haste-map-26.6.2.tgz#dd7e60fe7dc0e9f911a23d79c5ff7fb5c2cafeaa"
+  integrity sha512-easWIJXIw71B2RdR8kgqpjQrbMRWQBgiBwXYEhtGUTaX+doCjBheluShdDMeR8IMfJiTqH4+zfhtg29apJf/8w==
+  dependencies:
+    "@jest/types" "^26.6.2"
+    "@types/graceful-fs" "^4.1.2"
+    "@types/node" "*"
+    anymatch "^3.0.3"
+    fb-watchman "^2.0.0"
+    graceful-fs "^4.2.4"
+    jest-regex-util "^26.0.0"
+    jest-serializer "^26.6.2"
+    jest-util "^26.6.2"
+    jest-worker "^26.6.2"
+    micromatch "^4.0.2"
+    sane "^4.0.3"
+    walker "^1.0.7"
+  optionalDependencies:
+    fsevents "^2.1.2"
+
+jest-jasmine2@^26.6.3:
+  version "26.6.3"
+  resolved "https://registry.yarnpkg.com/jest-jasmine2/-/jest-jasmine2-26.6.3.tgz#adc3cf915deacb5212c93b9f3547cd12958f2edd"
+  integrity sha512-kPKUrQtc8aYwBV7CqBg5pu+tmYXlvFlSFYn18ev4gPFtrRzB15N2gW/Roew3187q2w2eHuu0MU9TJz6w0/nPEg==
+  dependencies:
+    "@babel/traverse" "^7.1.0"
+    "@jest/environment" "^26.6.2"
+    "@jest/source-map" "^26.6.2"
+    "@jest/test-result" "^26.6.2"
+    "@jest/types" "^26.6.2"
+    "@types/node" "*"
+    chalk "^4.0.0"
+    co "^4.6.0"
+    expect "^26.6.2"
+    is-generator-fn "^2.0.0"
+    jest-each "^26.6.2"
+    jest-matcher-utils "^26.6.2"
+    jest-message-util "^26.6.2"
+    jest-runtime "^26.6.3"
+    jest-snapshot "^26.6.2"
+    jest-util "^26.6.2"
+    pretty-format "^26.6.2"
+    throat "^5.0.0"
+
+jest-leak-detector@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/jest-leak-detector/-/jest-leak-detector-26.6.2.tgz#7717cf118b92238f2eba65054c8a0c9c653a91af"
+  integrity sha512-i4xlXpsVSMeKvg2cEKdfhh0H39qlJlP5Ex1yQxwF9ubahboQYMgTtz5oML35AVA3B4Eu+YsmwaiKVev9KCvLxg==
+  dependencies:
+    jest-get-type "^26.3.0"
+    pretty-format "^26.6.2"
+
+jest-matcher-utils@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/jest-matcher-utils/-/jest-matcher-utils-26.6.2.tgz#8e6fd6e863c8b2d31ac6472eeb237bc595e53e7a"
+  integrity sha512-llnc8vQgYcNqDrqRDXWwMr9i7rS5XFiCwvh6DTP7Jqa2mqpcCBBlpCbn+trkG0KNhPu/h8rzyBkriOtBstvWhw==
+  dependencies:
+    chalk "^4.0.0"
+    jest-diff "^26.6.2"
+    jest-get-type "^26.3.0"
+    pretty-format "^26.6.2"
+
+jest-message-util@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/jest-message-util/-/jest-message-util-26.6.2.tgz#58173744ad6fc0506b5d21150b9be56ef001ca07"
+  integrity sha512-rGiLePzQ3AzwUshu2+Rn+UMFk0pHN58sOG+IaJbk5Jxuqo3NYO1U2/MIR4S1sKgsoYSXSzdtSa0TgrmtUwEbmA==
+  dependencies:
+    "@babel/code-frame" "^7.0.0"
+    "@jest/types" "^26.6.2"
+    "@types/stack-utils" "^2.0.0"
+    chalk "^4.0.0"
+    graceful-fs "^4.2.4"
+    micromatch "^4.0.2"
+    pretty-format "^26.6.2"
+    slash "^3.0.0"
+    stack-utils "^2.0.2"
+
+jest-mock@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/jest-mock/-/jest-mock-26.6.2.tgz#d6cb712b041ed47fe0d9b6fc3474bc6543feb302"
+  integrity sha512-YyFjePHHp1LzpzYcmgqkJ0nm0gg/lJx2aZFzFy1S6eUqNjXsOqTK10zNRff2dNfssgokjkG65OlWNcIlgd3zew==
+  dependencies:
+    "@jest/types" "^26.6.2"
+    "@types/node" "*"
+
+jest-pnp-resolver@^1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/jest-pnp-resolver/-/jest-pnp-resolver-1.2.2.tgz#b704ac0ae028a89108a4d040b3f919dfddc8e33c"
+  integrity sha512-olV41bKSMm8BdnuMsewT4jqlZ8+3TCARAXjZGT9jcoSnrfUnRCqnMoF9XEeoWjbzObpqF9dRhHQj0Xb9QdF6/w==
+
+jest-regex-util@^26.0.0:
+  version "26.0.0"
+  resolved "https://registry.yarnpkg.com/jest-regex-util/-/jest-regex-util-26.0.0.tgz#d25e7184b36e39fd466c3bc41be0971e821fee28"
+  integrity sha512-Gv3ZIs/nA48/Zvjrl34bf+oD76JHiGDUxNOVgUjh3j890sblXryjY4rss71fPtD/njchl6PSE2hIhvyWa1eT0A==
+
+jest-resolve-dependencies@^26.6.3:
+  version "26.6.3"
+  resolved "https://registry.yarnpkg.com/jest-resolve-dependencies/-/jest-resolve-dependencies-26.6.3.tgz#6680859ee5d22ee5dcd961fe4871f59f4c784fb6"
+  integrity sha512-pVwUjJkxbhe4RY8QEWzN3vns2kqyuldKpxlxJlzEYfKSvY6/bMvxoFrYYzUO1Gx28yKWN37qyV7rIoIp2h8fTg==
+  dependencies:
+    "@jest/types" "^26.6.2"
+    jest-regex-util "^26.0.0"
+    jest-snapshot "^26.6.2"
+
+jest-resolve@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/jest-resolve/-/jest-resolve-26.6.2.tgz#a3ab1517217f469b504f1b56603c5bb541fbb507"
+  integrity sha512-sOxsZOq25mT1wRsfHcbtkInS+Ek7Q8jCHUB0ZUTP0tc/c41QHriU/NunqMfCUWsL4H3MHpvQD4QR9kSYhS7UvQ==
+  dependencies:
+    "@jest/types" "^26.6.2"
+    chalk "^4.0.0"
+    graceful-fs "^4.2.4"
+    jest-pnp-resolver "^1.2.2"
+    jest-util "^26.6.2"
+    read-pkg-up "^7.0.1"
+    resolve "^1.18.1"
+    slash "^3.0.0"
+
+jest-runner@^26.6.3:
+  version "26.6.3"
+  resolved "https://registry.yarnpkg.com/jest-runner/-/jest-runner-26.6.3.tgz#2d1fed3d46e10f233fd1dbd3bfaa3fe8924be159"
+  integrity sha512-atgKpRHnaA2OvByG/HpGA4g6CSPS/1LK0jK3gATJAoptC1ojltpmVlYC3TYgdmGp+GLuhzpH30Gvs36szSL2JQ==
+  dependencies:
+    "@jest/console" "^26.6.2"
+    "@jest/environment" "^26.6.2"
+    "@jest/test-result" "^26.6.2"
+    "@jest/types" "^26.6.2"
+    "@types/node" "*"
+    chalk "^4.0.0"
+    emittery "^0.7.1"
+    exit "^0.1.2"
+    graceful-fs "^4.2.4"
+    jest-config "^26.6.3"
+    jest-docblock "^26.0.0"
+    jest-haste-map "^26.6.2"
+    jest-leak-detector "^26.6.2"
+    jest-message-util "^26.6.2"
+    jest-resolve "^26.6.2"
+    jest-runtime "^26.6.3"
+    jest-util "^26.6.2"
+    jest-worker "^26.6.2"
+    source-map-support "^0.5.6"
+    throat "^5.0.0"
+
+jest-runtime@^26.6.3:
+  version "26.6.3"
+  resolved "https://registry.yarnpkg.com/jest-runtime/-/jest-runtime-26.6.3.tgz#4f64efbcfac398331b74b4b3c82d27d401b8fa2b"
+  integrity sha512-lrzyR3N8sacTAMeonbqpnSka1dHNux2uk0qqDXVkMv2c/A3wYnvQ4EXuI013Y6+gSKSCxdaczvf4HF0mVXHRdw==
+  dependencies:
+    "@jest/console" "^26.6.2"
+    "@jest/environment" "^26.6.2"
+    "@jest/fake-timers" "^26.6.2"
+    "@jest/globals" "^26.6.2"
+    "@jest/source-map" "^26.6.2"
+    "@jest/test-result" "^26.6.2"
+    "@jest/transform" "^26.6.2"
+    "@jest/types" "^26.6.2"
+    "@types/yargs" "^15.0.0"
+    chalk "^4.0.0"
+    cjs-module-lexer "^0.6.0"
+    collect-v8-coverage "^1.0.0"
+    exit "^0.1.2"
+    glob "^7.1.3"
+    graceful-fs "^4.2.4"
+    jest-config "^26.6.3"
+    jest-haste-map "^26.6.2"
+    jest-message-util "^26.6.2"
+    jest-mock "^26.6.2"
+    jest-regex-util "^26.0.0"
+    jest-resolve "^26.6.2"
+    jest-snapshot "^26.6.2"
+    jest-util "^26.6.2"
+    jest-validate "^26.6.2"
+    slash "^3.0.0"
+    strip-bom "^4.0.0"
+    yargs "^15.4.1"
+
+jest-serializer@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/jest-serializer/-/jest-serializer-26.6.2.tgz#d139aafd46957d3a448f3a6cdabe2919ba0742d1"
+  integrity sha512-S5wqyz0DXnNJPd/xfIzZ5Xnp1HrJWBczg8mMfMpN78OJ5eDxXyf+Ygld9wX1DnUWbIbhM1YDY95NjR4CBXkb2g==
+  dependencies:
+    "@types/node" "*"
+    graceful-fs "^4.2.4"
+
+jest-snapshot@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/jest-snapshot/-/jest-snapshot-26.6.2.tgz#f3b0af1acb223316850bd14e1beea9837fb39c84"
+  integrity sha512-OLhxz05EzUtsAmOMzuupt1lHYXCNib0ECyuZ/PZOx9TrZcC8vL0x+DUG3TL+GLX3yHG45e6YGjIm0XwDc3q3og==
+  dependencies:
+    "@babel/types" "^7.0.0"
+    "@jest/types" "^26.6.2"
+    "@types/babel__traverse" "^7.0.4"
+    "@types/prettier" "^2.0.0"
+    chalk "^4.0.0"
+    expect "^26.6.2"
+    graceful-fs "^4.2.4"
+    jest-diff "^26.6.2"
+    jest-get-type "^26.3.0"
+    jest-haste-map "^26.6.2"
+    jest-matcher-utils "^26.6.2"
+    jest-message-util "^26.6.2"
+    jest-resolve "^26.6.2"
+    natural-compare "^1.4.0"
+    pretty-format "^26.6.2"
+    semver "^7.3.2"
+
+jest-util@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/jest-util/-/jest-util-26.6.2.tgz#907535dbe4d5a6cb4c47ac9b926f6af29576cbc1"
+  integrity sha512-MDW0fKfsn0OI7MS7Euz6h8HNDXVQ0gaM9uW6RjfDmd1DAFcaxX9OqIakHIqhbnmF08Cf2DLDG+ulq8YQQ0Lp0Q==
+  dependencies:
+    "@jest/types" "^26.6.2"
+    "@types/node" "*"
+    chalk "^4.0.0"
+    graceful-fs "^4.2.4"
+    is-ci "^2.0.0"
+    micromatch "^4.0.2"
+
+jest-validate@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/jest-validate/-/jest-validate-26.6.2.tgz#23d380971587150467342911c3d7b4ac57ab20ec"
+  integrity sha512-NEYZ9Aeyj0i5rQqbq+tpIOom0YS1u2MVu6+euBsvpgIme+FOfRmoC4R5p0JiAUpaFvFy24xgrpMknarR/93XjQ==
+  dependencies:
+    "@jest/types" "^26.6.2"
+    camelcase "^6.0.0"
+    chalk "^4.0.0"
+    jest-get-type "^26.3.0"
+    leven "^3.1.0"
+    pretty-format "^26.6.2"
+
+jest-watcher@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/jest-watcher/-/jest-watcher-26.6.2.tgz#a5b683b8f9d68dbcb1d7dae32172d2cca0592975"
+  integrity sha512-WKJob0P/Em2csiVthsI68p6aGKTIcsfjH9Gsx1f0A3Italz43e3ho0geSAVsmj09RWOELP1AZ/DXyJgOgDKxXQ==
+  dependencies:
+    "@jest/test-result" "^26.6.2"
+    "@jest/types" "^26.6.2"
+    "@types/node" "*"
+    ansi-escapes "^4.2.1"
+    chalk "^4.0.0"
+    jest-util "^26.6.2"
+    string-length "^4.0.1"
+
+jest-worker@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/jest-worker/-/jest-worker-26.6.2.tgz#7f72cbc4d643c365e27b9fd775f9d0eaa9c7a8ed"
+  integrity sha512-KWYVV1c4i+jbMpaBC+U++4Va0cp8OisU185o73T1vo99hqi7w8tSJfUXYswwqqrjzwxa6KpRK54WhPvwf5w6PQ==
+  dependencies:
+    "@types/node" "*"
+    merge-stream "^2.0.0"
+    supports-color "^7.0.0"
+
+jest@^26.6.3:
+  version "26.6.3"
+  resolved "https://registry.yarnpkg.com/jest/-/jest-26.6.3.tgz#40e8fdbe48f00dfa1f0ce8121ca74b88ac9148ef"
+  integrity sha512-lGS5PXGAzR4RF7V5+XObhqz2KZIDUA1yD0DG6pBVmy10eh0ZIXQImRuzocsI/N2XZ1GrLFwTS27In2i2jlpq1Q==
+  dependencies:
+    "@jest/core" "^26.6.3"
+    import-local "^3.0.2"
+    jest-cli "^26.6.3"
+
+"js-tokens@^3.0.0 || ^4.0.0", js-tokens@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz"
+  integrity sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==
+
+js-yaml@^3.13.1:
+  version "3.14.1"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.14.1.tgz#dae812fdb3825fa306609a8717383c50c36a0537"
+  integrity sha512-okMH7OXXJ7YrN9Ok3/SXrnu4iX9yOk+25nqX4imS2npuvTYDmo/QEZoqwZkYaIDk3jVvBOTOIEgEhaLOynBS9g==
+  dependencies:
+    argparse "^1.0.7"
+    esprima "^4.0.0"
+
+jsbn@~0.1.0:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"
+  integrity sha1-peZUwuWi3rXyAdls77yoDA7y9RM=
+
+jsdom@^16.4.0:
+  version "16.5.1"
+  resolved "https://registry.yarnpkg.com/jsdom/-/jsdom-16.5.1.tgz#4ced6bbd7b77d67fb980e64d9e3e6fb900f97dd6"
+  integrity sha512-pF73EOsJgwZekbDHEY5VO/yKXUkab/DuvrQB/ANVizbr6UAHJsDdHXuotZYwkJSGQl1JM+ivXaqY+XBDDL4TiA==
+  dependencies:
+    abab "^2.0.5"
+    acorn "^8.0.5"
+    acorn-globals "^6.0.0"
+    cssom "^0.4.4"
+    cssstyle "^2.3.0"
+    data-urls "^2.0.0"
+    decimal.js "^10.2.1"
+    domexception "^2.0.1"
+    escodegen "^2.0.0"
+    html-encoding-sniffer "^2.0.1"
+    is-potential-custom-element-name "^1.0.0"
+    nwsapi "^2.2.0"
+    parse5 "6.0.1"
+    request "^2.88.2"
+    request-promise-native "^1.0.9"
+    saxes "^5.0.1"
+    symbol-tree "^3.2.4"
+    tough-cookie "^4.0.0"
+    w3c-hr-time "^1.0.2"
+    w3c-xmlserializer "^2.0.0"
+    webidl-conversions "^6.1.0"
+    whatwg-encoding "^1.0.5"
+    whatwg-mimetype "^2.3.0"
+    whatwg-url "^8.0.0"
+    ws "^7.4.4"
+    xml-name-validator "^3.0.0"
+
+jsesc@^2.5.1:
+  version "2.5.2"
+  resolved "https://registry.npmjs.org/jsesc/-/jsesc-2.5.2.tgz"
+  integrity sha512-OYu7XEzjkCQ3C5Ps3QIZsQfNpqoJyZZA99wd9aWd05NCtC5pWOkShK2mkL6HXQR6/Cy2lbNdPlZBpuQHXE63gA==
+
+json-parse-even-better-errors@^2.3.0:
+  version "2.3.1"
+  resolved "https://registry.yarnpkg.com/json-parse-even-better-errors/-/json-parse-even-better-errors-2.3.1.tgz#7c47805a94319928e05777405dc12e1f7a4ee02d"
+  integrity sha512-xyFwyhro/JEof6Ghe2iz2NcXoj2sloNsWr/XsERDK/oiPCfaNhl5ONfp+jQdAZRQQ0IJWNzH9zIZF7li91kh2w==
+
+json-schema-traverse@^0.4.1:
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz#69f6a87d9513ab8bb8fe63bdb0979c448e684660"
+  integrity sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg==
+
+json-schema@0.2.3:
+  version "0.2.3"
+  resolved "https://registry.yarnpkg.com/json-schema/-/json-schema-0.2.3.tgz#b480c892e59a2f05954ce727bd3f2a4e882f9e13"
+  integrity sha1-tIDIkuWaLwWVTOcnvT8qTogvnhM=
+
+json-stringify-safe@~5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/json-stringify-safe/-/json-stringify-safe-5.0.1.tgz#1296a2d58fd45f19a0f6ce01d65701e2c735b6eb"
+  integrity sha1-Epai1Y/UXxmg9s4B1lcB4sc1tus=
+
+json5@^2.1.2:
+  version "2.2.0"
+  resolved "https://registry.npmjs.org/json5/-/json5-2.2.0.tgz"
+  integrity sha512-f+8cldu7X/y7RAJurMEJmdoKXGB/X550w2Nr3tTbezL6RwEE/iMcm+tZnXeoZtKuOq6ft8+CqzEkrIgx1fPoQA==
+  dependencies:
+    minimist "^1.2.5"
+
+jsprim@^1.2.2:
+  version "1.4.1"
+  resolved "https://registry.yarnpkg.com/jsprim/-/jsprim-1.4.1.tgz#313e66bc1e5cc06e438bc1b7499c2e5c56acb6a2"
+  integrity sha1-MT5mvB5cwG5Di8G3SZwuXFastqI=
+  dependencies:
+    assert-plus "1.0.0"
+    extsprintf "1.3.0"
+    json-schema "0.2.3"
+    verror "1.10.0"
+
+kind-of@^3.0.2, kind-of@^3.0.3, kind-of@^3.2.0:
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-3.2.2.tgz#31ea21a734bab9bbb0f32466d893aea51e4a3c64"
+  integrity sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=
+  dependencies:
+    is-buffer "^1.1.5"
+
+kind-of@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-4.0.0.tgz#20813df3d712928b207378691a45066fae72dd57"
+  integrity sha1-IIE989cSkosgc3hpGkUGb65y3Vc=
+  dependencies:
+    is-buffer "^1.1.5"
+
+kind-of@^5.0.0:
+  version "5.1.0"
+  resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-5.1.0.tgz#729c91e2d857b7a419a1f9aa65685c4c33f5845d"
+  integrity sha512-NGEErnH6F2vUuXDh+OlbcKW7/wOcfdRHaZ7VWtqCztfHri/++YKmP51OdWeGPuqCOba6kk2OTe5d02VmTB80Pw==
+
+kind-of@^6.0.0, kind-of@^6.0.2:
+  version "6.0.3"
+  resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-6.0.3.tgz#07c05034a6c349fa06e24fa35aa76db4580ce4dd"
+  integrity sha512-dcS1ul+9tmeD95T+x28/ehLgd9mENa3LsvDTtzm3vyBEO7RPptvAD+t44WVXaUjTBRcrpFeFlC8WCruUR456hw==
+
+kleur@^3.0.3:
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/kleur/-/kleur-3.0.3.tgz#a79c9ecc86ee1ce3fa6206d1216c501f147fc07e"
+  integrity sha512-eTIzlVOSUR+JxdDFepEYcBMtZ9Qqdef+rnzWdRZuMbOywu5tO2w2N7rqjoANZ5k9vywhL6Br1VRjUIgTQx4E8w==
+
+leven@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/leven/-/leven-3.1.0.tgz#77891de834064cccba82ae7842bb6b14a13ed7f2"
+  integrity sha512-qsda+H8jTaUaN/x5vzW2rzc+8Rw4TAQ/4KjB46IwK5VH+IlVeeeje/EoZRpiXvIqjFgK84QffqPztGI3VBLG1A==
+
+levn@~0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/levn/-/levn-0.3.0.tgz#3b09924edf9f083c0490fdd4c0bc4421e04764ee"
+  integrity sha1-OwmSTt+fCDwEkP3UwLxEIeBHZO4=
+  dependencies:
+    prelude-ls "~1.1.2"
+    type-check "~0.3.2"
+
+lines-and-columns@^1.1.6:
+  version "1.1.6"
+  resolved "https://registry.yarnpkg.com/lines-and-columns/-/lines-and-columns-1.1.6.tgz#1c00c743b433cd0a4e80758f7b64a57440d9ff00"
+  integrity sha1-HADHQ7QzzQpOgHWPe2SldEDZ/wA=
+
+locate-path@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-3.0.0.tgz#dbec3b3ab759758071b58fe59fc41871af21400e"
+  integrity sha512-7AO748wWnIhNqAuaty2ZWHkQHRSNfPVIsPIfwEOWO22AmaoVrWavlOcMR5nzTLNYvp36X220/maaRsrec1G65A==
+  dependencies:
+    p-locate "^3.0.0"
+    path-exists "^3.0.0"
+
+locate-path@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-5.0.0.tgz#1afba396afd676a6d42504d0a67a3a7eb9f62aa0"
+  integrity sha512-t7hw9pI+WvuwNJXwk5zVHpyhIqzg2qTlklJOf0mVxGSbe3Fp2VieZcduNYjaLDoy6p9uGpQEGWG87WpMKlNq8g==
+  dependencies:
+    p-locate "^4.1.0"
+
+lodash.sortby@^4.7.0:
+  version "4.7.0"
+  resolved "https://registry.yarnpkg.com/lodash.sortby/-/lodash.sortby-4.7.0.tgz#edd14c824e2cc9c1e0b0a1b42bb5210516a42438"
+  integrity sha1-7dFMgk4sycHgsKG0K7UhBRakJDg=
+
+lodash@^4.17.19:
+  version "4.17.21"
+  resolved "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
+
+loose-envify@^1.1.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.4.0.tgz"
+  integrity sha512-lyuxPGr/Wfhrlem2CL/UcnUc1zcqKAImBDzukY7Y5F/yQiNdko6+fRLevlw1HgMySw7f611UIY408EtxRSoK3Q==
+  dependencies:
+    js-tokens "^3.0.0 || ^4.0.0"
+
+lru-cache@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-6.0.0.tgz#6d6fe6570ebd96aaf90fcad1dafa3b2566db3a94"
+  integrity sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==
+  dependencies:
+    yallist "^4.0.0"
+
+make-dir@^2.0.0, make-dir@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/make-dir/-/make-dir-2.1.0.tgz#5f0310e18b8be898cc07009295a30ae41e91e6f5"
+  integrity sha512-LS9X+dc8KLxXCb8dni79fLIIUA5VyZoyjSMCwTluaXA0o27cCK0bhXkpgw+sTXVpPy/lSO57ilRixqk0vDmtRA==
+  dependencies:
+    pify "^4.0.1"
+    semver "^5.6.0"
+
+make-dir@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/make-dir/-/make-dir-3.1.0.tgz#415e967046b3a7f1d185277d84aa58203726a13f"
+  integrity sha512-g3FeP20LNwhALb/6Cz6Dd4F2ngze0jz7tbzrD2wAV+o9FeNHe4rL+yK2md0J/fiSf1sa1ADhXqi5+oVwOM/eGw==
+  dependencies:
+    semver "^6.0.0"
+
+makeerror@1.0.x:
+  version "1.0.11"
+  resolved "https://registry.yarnpkg.com/makeerror/-/makeerror-1.0.11.tgz#e01a5c9109f2af79660e4e8b9587790184f5a96c"
+  integrity sha1-4BpckQnyr3lmDk6LlYd5AYT1qWw=
+  dependencies:
+    tmpl "1.0.x"
+
+map-cache@^0.2.2:
+  version "0.2.2"
+  resolved "https://registry.yarnpkg.com/map-cache/-/map-cache-0.2.2.tgz#c32abd0bd6525d9b051645bb4f26ac5dc98a0dbf"
+  integrity sha1-wyq9C9ZSXZsFFkW7TyasXcmKDb8=
+
+map-visit@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/map-visit/-/map-visit-1.0.0.tgz#ecdca8f13144e660f1b5bd41f12f3479d98dfb8f"
+  integrity sha1-7Nyo8TFE5mDxtb1B8S80edmN+48=
+  dependencies:
+    object-visit "^1.0.0"
+
+merge-stream@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/merge-stream/-/merge-stream-2.0.0.tgz#52823629a14dd00c9770fb6ad47dc6310f2c1f60"
+  integrity sha512-abv/qOcuPfk3URPfDzmZU1LKmuw8kT+0nIHvKrKgFrwifol/doWcdA4ZqsWQ8ENrFKkd67Mfpo/LovbIUsbt3w==
+
+micromatch@^3.1.4:
+  version "3.1.10"
+  resolved "https://registry.yarnpkg.com/micromatch/-/micromatch-3.1.10.tgz#70859bc95c9840952f359a068a3fc49f9ecfac23"
+  integrity sha512-MWikgl9n9M3w+bpsY3He8L+w9eF9338xRl8IAO5viDizwSzziFEyUzo2xrrloB64ADbTf8uA8vRqqttDTOmccg==
+  dependencies:
+    arr-diff "^4.0.0"
+    array-unique "^0.3.2"
+    braces "^2.3.1"
+    define-property "^2.0.2"
+    extend-shallow "^3.0.2"
+    extglob "^2.0.4"
+    fragment-cache "^0.2.1"
+    kind-of "^6.0.2"
+    nanomatch "^1.2.9"
+    object.pick "^1.3.0"
+    regex-not "^1.0.0"
+    snapdragon "^0.8.1"
+    to-regex "^3.0.2"
+
+micromatch@^4.0.2:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/micromatch/-/micromatch-4.0.2.tgz#4fcb0999bf9fbc2fcbdd212f6d629b9a56c39259"
+  integrity sha512-y7FpHSbMUMoyPbYUSzO6PaZ6FyRnQOpHuKwbo1G+Knck95XVU4QAiKdGEnj5wwoS7PlOgthX/09u5iFJ+aYf5Q==
+  dependencies:
+    braces "^3.0.1"
+    picomatch "^2.0.5"
+
+mime-db@1.46.0:
+  version "1.46.0"
+  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.46.0.tgz#6267748a7f799594de3cbc8cde91def349661cee"
+  integrity sha512-svXaP8UQRZ5K7or+ZmfNhg2xX3yKDMUzqadsSqi4NCH/KomcH75MAMYAGVlvXn4+b/xOPhS3I2uHKRUzvjY7BQ==
+
+mime-types@^2.1.12, mime-types@~2.1.19:
+  version "2.1.29"
+  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.29.tgz#1d4ab77da64b91f5f72489df29236563754bb1b2"
+  integrity sha512-Y/jMt/S5sR9OaqteJtslsFZKWOIIqMACsJSiHghlCAyhf7jfVYjKBmLiX8OgpWeW+fjJ2b+Az69aPFPkUOY6xQ==
+  dependencies:
+    mime-db "1.46.0"
+
+mimic-fn@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-2.1.0.tgz#7ed2c2ccccaf84d3ffcb7a69b57711fc2083401b"
+  integrity sha512-OqbOk5oEQeAZ8WXWydlu9HJjz9WVdEIvamMCcXmuqUYjTknH/sqsWvhQ3vgwKFRR1HpjvNBKQ37nbJgYzGqGcg==
+
+minimatch@^3.0.4:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
+  integrity sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==
+  dependencies:
+    brace-expansion "^1.1.7"
+
+minimist@^1.1.1, minimist@^1.2.0, minimist@^1.2.5:
+  version "1.2.5"
+  resolved "https://registry.npmjs.org/minimist/-/minimist-1.2.5.tgz"
+  integrity sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==
+
+mixin-deep@^1.2.0:
+  version "1.3.2"
+  resolved "https://registry.yarnpkg.com/mixin-deep/-/mixin-deep-1.3.2.tgz#1120b43dc359a785dce65b55b82e257ccf479566"
+  integrity sha512-WRoDn//mXBiJ1H40rqa3vH0toePwSsGb45iInWlTySa+Uu4k3tYUSxa2v1KqAiLtvlrSzaExqS1gtk96A9zvEA==
+  dependencies:
+    for-in "^1.0.2"
+    is-extendable "^1.0.1"
+
+ms@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
+  integrity sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=
+
+ms@2.1.2:
+  version "2.1.2"
+  resolved "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz"
+  integrity sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==
+
+nanomatch@^1.2.9:
+  version "1.2.13"
+  resolved "https://registry.yarnpkg.com/nanomatch/-/nanomatch-1.2.13.tgz#b87a8aa4fc0de8fe6be88895b38983ff265bd119"
+  integrity sha512-fpoe2T0RbHwBTBUOftAfBPaDEi06ufaUai0mE6Yn1kacc3SnTErfb/h+X94VXzI64rKFHYImXSvdwGGCmwOqCA==
+  dependencies:
+    arr-diff "^4.0.0"
+    array-unique "^0.3.2"
+    define-property "^2.0.2"
+    extend-shallow "^3.0.2"
+    fragment-cache "^0.2.1"
+    is-windows "^1.0.2"
+    kind-of "^6.0.2"
+    object.pick "^1.3.0"
+    regex-not "^1.0.0"
+    snapdragon "^0.8.1"
+    to-regex "^3.0.1"
+
+natural-compare@^1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/natural-compare/-/natural-compare-1.4.0.tgz#4abebfeed7541f2c27acfb29bdbbd15c8d5ba4f7"
+  integrity sha1-Sr6/7tdUHywnrPspvbvRXI1bpPc=
+
+nice-try@^1.0.4:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/nice-try/-/nice-try-1.0.5.tgz#a3378a7696ce7d223e88fc9b764bd7ef1089e366"
+  integrity sha512-1nh45deeb5olNY7eX82BkPO7SSxR5SSYJiPTrTdFUVYwAl8CKMA5N9PjTYkHiRjisVcxcQ1HXdLhx2qxxJzLNQ==
+
+"node-14@npm:node@14":
+  version "14.16.0"
+  resolved "https://registry.yarnpkg.com/node/-/node-14.16.0.tgz#8685f73db44f9c296a5d8d35b8fdc5fa81e12d75"
+  integrity sha512-YBeluFNO6rbx0cJko06Yn/JuOCnN3vRePaNV4t6qLSnhgJFbVy9FUk/C/2G3Dyva/9ei6I1EpQjXa5GJJ+Su0g==
+  dependencies:
+    node-bin-setup "^1.0.0"
+
+"node-15@npm:node@15":
+  version "15.10.0"
+  resolved "https://registry.yarnpkg.com/node/-/node-15.10.0.tgz#082a1e03cb4b58199d4b427b379dca6053193260"
+  integrity sha512-JboERsul33BpTDeth8SsGWg/gTZfNEWGMT5HVqIoyepRwAARznCjwdWvLHHd/A9bvAYFp5zaq46RnVArWz44kA==
+  dependencies:
+    node-bin-setup "^1.0.0"
+
+node-bin-setup@^1.0.0:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/node-bin-setup/-/node-bin-setup-1.0.6.tgz#4b5c9bb937ece702d7069b36ca78af4684677528"
+  integrity sha512-uPIxXNis1CRbv1DwqAxkgBk5NFV3s7cMN/Gf556jSw6jBvV7ca4F9lRL/8cALcZecRibeqU+5dFYqFFmzv5a0Q==
+
+node-int64@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/node-int64/-/node-int64-0.4.0.tgz#87a9065cdb355d3182d8f94ce11188b825c68a3b"
+  integrity sha1-h6kGXNs1XTGC2PlM4RGIuCXGijs=
+
+node-modules-regexp@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/node-modules-regexp/-/node-modules-regexp-1.0.0.tgz#8d9dbe28964a4ac5712e9131642107c71e90ec40"
+  integrity sha1-jZ2+KJZKSsVxLpExZCEHxx6Q7EA=
+
+node-notifier@^8.0.0:
+  version "8.0.2"
+  resolved "https://registry.yarnpkg.com/node-notifier/-/node-notifier-8.0.2.tgz#f3167a38ef0d2c8a866a83e318c1ba0efeb702c5"
+  integrity sha512-oJP/9NAdd9+x2Q+rfphB2RJCHjod70RcRLjosiPMMu5gjIfwVnOUGq2nbTjTUbmy0DJ/tFIVT30+Qe3nzl4TJg==
+  dependencies:
+    growly "^1.3.0"
+    is-wsl "^2.2.0"
+    semver "^7.3.2"
+    shellwords "^0.1.1"
+    uuid "^8.3.0"
+    which "^2.0.2"
+
+node-releases@^1.1.70:
+  version "1.1.71"
+  resolved "https://registry.npmjs.org/node-releases/-/node-releases-1.1.71.tgz"
+  integrity sha512-zR6HoT6LrLCRBwukmrVbHv0EpEQjksO6GmFcZQQuCAy139BEsoVKPYnf3jongYW83fAa1torLGYwxxky/p28sg==
+
+normalize-package-data@^2.5.0:
+  version "2.5.0"
+  resolved "https://registry.yarnpkg.com/normalize-package-data/-/normalize-package-data-2.5.0.tgz#e66db1838b200c1dfc233225d12cb36520e234a8"
+  integrity sha512-/5CMN3T0R4XTj4DcGaexo+roZSdSFW/0AOOTROrjxzCG1wrWXEsGbRKevjlIL+ZDE4sZlJr5ED4YW0yqmkK+eA==
+  dependencies:
+    hosted-git-info "^2.1.4"
+    resolve "^1.10.0"
+    semver "2 || 3 || 4 || 5"
+    validate-npm-package-license "^3.0.1"
+
+normalize-path@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-2.1.1.tgz#1ab28b556e198363a8c1a6f7e6fa20137fe6aed9"
+  integrity sha1-GrKLVW4Zg2Oowab35vogE3/mrtk=
+  dependencies:
+    remove-trailing-separator "^1.0.1"
+
+normalize-path@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-3.0.0.tgz#0dcd69ff23a1c9b11fd0978316644a0388216a65"
+  integrity sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA==
+
+npm-run-path@^2.0.0:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/npm-run-path/-/npm-run-path-2.0.2.tgz#35a9232dfa35d7067b4cb2ddf2357b1871536c5f"
+  integrity sha1-NakjLfo11wZ7TLLd8jV7GHFTbF8=
+  dependencies:
+    path-key "^2.0.0"
+
+npm-run-path@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/npm-run-path/-/npm-run-path-4.0.1.tgz#b7ecd1e5ed53da8e37a55e1c2269e0b97ed748ea"
+  integrity sha512-S48WzZW777zhNIrn7gxOlISNAqi9ZC/uQFnRdbeIHhZhCA6UqpkOT8T1G7BvfdgP4Er8gF4sUbaS0i7QvIfCWw==
+  dependencies:
+    path-key "^3.0.0"
+
+nwsapi@^2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/nwsapi/-/nwsapi-2.2.0.tgz#204879a9e3d068ff2a55139c2c772780681a38b7"
+  integrity sha512-h2AatdwYH+JHiZpv7pt/gSX1XoRGb7L/qSIeuqA6GwYoF9w1vP1cw42TO0aI2pNyshRK5893hNSl+1//vHK7hQ==
+
+oauth-sign@~0.9.0:
+  version "0.9.0"
+  resolved "https://registry.yarnpkg.com/oauth-sign/-/oauth-sign-0.9.0.tgz#47a7b016baa68b5fa0ecf3dee08a85c679ac6455"
+  integrity sha512-fexhUFFPTGV8ybAtSIGbV6gOkSv8UtRbDBnAyLQw4QPKkgNlsH2ByPGtMUqdWkos6YCRmAqViwgZrJc/mRDzZQ==
+
+object-assign@^4.1.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz"
+  integrity sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=
+
+object-copy@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/object-copy/-/object-copy-0.1.0.tgz#7e7d858b781bd7c991a41ba975ed3812754e998c"
+  integrity sha1-fn2Fi3gb18mRpBupde04EnVOmYw=
+  dependencies:
+    copy-descriptor "^0.1.0"
+    define-property "^0.2.5"
+    kind-of "^3.0.3"
+
+object-visit@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/object-visit/-/object-visit-1.0.1.tgz#f79c4493af0c5377b59fe39d395e41042dd045bb"
+  integrity sha1-95xEk68MU3e1n+OdOV5BBC3QRbs=
+  dependencies:
+    isobject "^3.0.0"
+
+object.pick@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/object.pick/-/object.pick-1.3.0.tgz#87a10ac4c1694bd2e1cbf53591a66141fb5dd747"
+  integrity sha1-h6EKxMFpS9Lhy/U1kaZhQftd10c=
+  dependencies:
+    isobject "^3.0.1"
+
+once@^1.3.0, once@^1.3.1, once@^1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
+  integrity sha1-WDsap3WWHUsROsF9nFC6753Xa9E=
+  dependencies:
+    wrappy "1"
+
+onetime@^5.1.0:
+  version "5.1.2"
+  resolved "https://registry.yarnpkg.com/onetime/-/onetime-5.1.2.tgz#d0e96ebb56b07476df1dd9c4806e5237985ca45e"
+  integrity sha512-kbpaSSGJTWdAY5KPVeMOKXSrPtr8C8C7wodJbcsd51jRnmD+GZu8Y0VoU6Dm5Z4vWr0Ig/1NKuWRKf7j5aaYSg==
+  dependencies:
+    mimic-fn "^2.1.0"
+
+optionator@^0.8.1:
+  version "0.8.3"
+  resolved "https://registry.yarnpkg.com/optionator/-/optionator-0.8.3.tgz#84fa1d036fe9d3c7e21d99884b601167ec8fb495"
+  integrity sha512-+IW9pACdk3XWmmTXG8m3upGUJst5XRGzxMRjXzAuJ1XnIFNvfhjjIuYkDvysnPQ7qzqVzLt78BCruntqRhWQbA==
+  dependencies:
+    deep-is "~0.1.3"
+    fast-levenshtein "~2.0.6"
+    levn "~0.3.0"
+    prelude-ls "~1.1.2"
+    type-check "~0.3.2"
+    word-wrap "~1.2.3"
+
+p-each-series@^2.1.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/p-each-series/-/p-each-series-2.2.0.tgz#105ab0357ce72b202a8a8b94933672657b5e2a9a"
+  integrity sha512-ycIL2+1V32th+8scbpTvyHNaHe02z0sjgh91XXjAk+ZeXoPN4Z46DVUnzdso0aX4KckKw0FNNFHdjZ2UsZvxiA==
+
+p-finally@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/p-finally/-/p-finally-1.0.0.tgz#3fbcfb15b899a44123b34b6dcc18b724336a2cae"
+  integrity sha1-P7z7FbiZpEEjs0ttzBi3JDNqLK4=
+
+p-limit@^2.0.0, p-limit@^2.2.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-2.3.0.tgz#3dd33c647a214fdfffd835933eb086da0dc21db1"
+  integrity sha512-//88mFWSJx8lxCzwdAABTJL2MyWB12+eIY7MDL2SqLmAkeKU9qxRvWuSyTjm3FUmpBEMuFfckAIqEaVGUDxb6w==
+  dependencies:
+    p-try "^2.0.0"
+
+p-locate@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/p-locate/-/p-locate-3.0.0.tgz#322d69a05c0264b25997d9f40cd8a891ab0064a4"
+  integrity sha512-x+12w/To+4GFfgJhBEpiDcLozRJGegY+Ei7/z0tSLkMmxGZNybVMSfWj9aJn8Z5Fc7dBUNJOOVgPv2H7IwulSQ==
+  dependencies:
+    p-limit "^2.0.0"
+
+p-locate@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/p-locate/-/p-locate-4.1.0.tgz#a3428bb7088b3a60292f66919278b7c297ad4f07"
+  integrity sha512-R79ZZ/0wAxKGu3oYMlz8jy/kbhsNrS7SKZ7PxEHBgJ5+F2mtFW2fK2cOtBh1cHYkQsbzFV7I+EoRKe6Yt0oK7A==
+  dependencies:
+    p-limit "^2.2.0"
+
+p-try@^2.0.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/p-try/-/p-try-2.2.0.tgz#cb2868540e313d61de58fafbe35ce9004d5540e6"
+  integrity sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==
+
+parse-json@^5.0.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/parse-json/-/parse-json-5.2.0.tgz#c76fc66dee54231c962b22bcc8a72cf2f99753cd"
+  integrity sha512-ayCKvm/phCGxOkYRSCM82iDwct8/EonSEgCSxWxD7ve6jHggsFl4fZVQBPRNgQoKiuV/odhFrGzQXZwbifC8Rg==
+  dependencies:
+    "@babel/code-frame" "^7.0.0"
+    error-ex "^1.3.1"
+    json-parse-even-better-errors "^2.3.0"
+    lines-and-columns "^1.1.6"
+
+parse5@6.0.1:
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/parse5/-/parse5-6.0.1.tgz#e1a1c085c569b3dc08321184f19a39cc27f7c30b"
+  integrity sha512-Ofn/CTFzRGTTxwpNEs9PP93gXShHcTq255nzRYSKe8AkVpZY7e1fpmTfOyoIvjP5HG7Z2ZM7VS9PPhQGW2pOpw==
+
+pascalcase@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/pascalcase/-/pascalcase-0.1.1.tgz#b363e55e8006ca6fe21784d2db22bd15d7917f14"
+  integrity sha1-s2PlXoAGym/iF4TS2yK9FdeRfxQ=
+
+path-exists@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-3.0.0.tgz#ce0ebeaa5f78cb18925ea7d810d7b59b010fd515"
+  integrity sha1-zg6+ql94yxiSXqfYENe1mwEP1RU=
+
+path-exists@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-4.0.0.tgz#513bdbe2d3b95d7762e8c1137efa195c6c61b5b3"
+  integrity sha512-ak9Qy5Q7jYb2Wwcey5Fpvg2KoAc/ZIhLSLOSBmRmygPsGwkVVt0fZa0qrtMz+m6tJTAHfZQ8FnmB4MG4LWy7/w==
+
+path-is-absolute@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
+  integrity sha1-F0uSaHNVNP+8es5r9TpanhtcX18=
+
+path-key@^2.0.0, path-key@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/path-key/-/path-key-2.0.1.tgz#411cadb574c5a140d3a4b1910d40d80cc9f40b40"
+  integrity sha1-QRyttXTFoUDTpLGRDUDYDMn0C0A=
+
+path-key@^3.0.0, path-key@^3.1.0:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/path-key/-/path-key-3.1.1.tgz#581f6ade658cbba65a0d3380de7753295054f375"
+  integrity sha512-ojmeN0qd+y0jszEtoY48r0Peq5dwMEkIlCOu6Q5f41lfkswXuKtYrhgoTpLnyIcHm24Uhqx+5Tqm2InSwLhE6Q==
+
+path-parse@^1.0.6:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.6.tgz#d62dbb5679405d72c4737ec58600e9ddcf06d24c"
+  integrity sha512-GSmOT2EbHrINBf9SR7CDELwlJ8AENk3Qn7OikK4nFYAu3Ote2+JYNVvkpAEQm3/TLNEJFD/xZJjzyxg3KBWOzw==
+
+performance-now@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/performance-now/-/performance-now-2.1.0.tgz#6309f4e0e5fa913ec1c69307ae364b4b377c9e7b"
+  integrity sha1-Ywn04OX6kT7BxpMHrjZLSzd8nns=
+
+picomatch@^2.0.4, picomatch@^2.0.5:
+  version "2.2.2"
+  resolved "https://registry.yarnpkg.com/picomatch/-/picomatch-2.2.2.tgz#21f333e9b6b8eaff02468f5146ea406d345f4dad"
+  integrity sha512-q0M/9eZHzmr0AulXyPwNfZjtwZ/RBZlbN3K3CErVrk50T2ASYI7Bye0EvekFY3IP1Nt2DHu0re+V2ZHIpMkuWg==
+
+pify@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/pify/-/pify-4.0.1.tgz#4b2cd25c50d598735c50292224fd8c6df41e3231"
+  integrity sha512-uB80kBFb/tfd68bVleG9T5GGsGPjJrLAUpR5PZIrhBnIaRTQRjqdJSsIKkOP6OAIFbj7GOrcudc5pNjZ+geV2g==
+
+pirates@^4.0.0, pirates@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/pirates/-/pirates-4.0.1.tgz#643a92caf894566f91b2b986d2c66950a8e2fb87"
+  integrity sha512-WuNqLTbMI3tmfef2TKxlQmAiLHKtFhlsCZnPIpuv2Ow0RDVO8lfy1Opf4NUzlMXLjPl+Men7AuVdX6TA+s+uGA==
+  dependencies:
+    node-modules-regexp "^1.0.0"
+
+pkg-dir@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/pkg-dir/-/pkg-dir-3.0.0.tgz#2749020f239ed990881b1f71210d51eb6523bea3"
+  integrity sha512-/E57AYkoeQ25qkxMj5PBOVgF8Kiu/h7cYS30Z5+R7WaiCCBfLq58ZI/dSeaEKb9WVJV5n/03QwrN3IeWIFllvw==
+  dependencies:
+    find-up "^3.0.0"
+
+pkg-dir@^4.2.0:
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/pkg-dir/-/pkg-dir-4.2.0.tgz#f099133df7ede422e81d1d8448270eeb3e4261f3"
+  integrity sha512-HRDzbaKjC+AOWVXxAU/x54COGeIv9eb+6CkDSQoNTt4XyWoIJvuPsXizxu/Fr23EiekbtZwmh1IcIG/l/a10GQ==
+  dependencies:
+    find-up "^4.0.0"
+
+posix-character-classes@^0.1.0:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/posix-character-classes/-/posix-character-classes-0.1.1.tgz#01eac0fe3b5af71a2a6c02feabb8c1fef7e00eab"
+  integrity sha1-AerA/jta9xoqbAL+q7jB/vfgDqs=
+
+prelude-ls@~1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
+  integrity sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=
+
+pretty-format@^26.6.2:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-26.6.2.tgz#e35c2705f14cb7fe2fe94fa078345b444120fc93"
+  integrity sha512-7AeGuCYNGmycyQbCqd/3PWH4eOoX/OiCa0uphp57NVTeAGdJGaAliecxwBDHYQCIvrW7aDBZCYeNTP/WX69mkg==
+  dependencies:
+    "@jest/types" "^26.6.2"
+    ansi-regex "^5.0.0"
+    ansi-styles "^4.0.0"
+    react-is "^17.0.1"
+
+prompts@^2.0.1:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/prompts/-/prompts-2.4.0.tgz#4aa5de0723a231d1ee9121c40fdf663df73f61d7"
+  integrity sha512-awZAKrk3vN6CroQukBL+R9051a4R3zCZBlJm/HBfrSZ8iTpYix3VX1vU4mveiLpiwmOJT4wokTF9m6HUk4KqWQ==
+  dependencies:
+    kleur "^3.0.3"
+    sisteransi "^1.0.5"
+
+psl@^1.1.28, psl@^1.1.33:
+  version "1.8.0"
+  resolved "https://registry.yarnpkg.com/psl/-/psl-1.8.0.tgz#9326f8bcfb013adcc005fdff056acce020e51c24"
+  integrity sha512-RIdOzyoavK+hA18OGGWDqUTsCLhtA7IcZ/6NCs4fFJaHBDab+pDDmDIByWFRQJq2Cd7r1OoQxBGKOaztq+hjIQ==
+
+pump@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/pump/-/pump-3.0.0.tgz#b4a2116815bde2f4e1ea602354e8c75565107a64"
+  integrity sha512-LwZy+p3SFs1Pytd/jYct4wpv49HiYCqd9Rlc5ZVdk0V+8Yzv6jR5Blk3TRmPL1ft69TxP0IMZGJ+WPFU2BFhww==
+  dependencies:
+    end-of-stream "^1.1.0"
+    once "^1.3.1"
+
+punycode@^2.1.0, punycode@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.1.tgz#b58b010ac40c22c5657616c8d2c2c02c7bf479ec"
+  integrity sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==
+
+qs@~6.5.2:
+  version "6.5.2"
+  resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.2.tgz#cb3ae806e8740444584ef154ce8ee98d403f3e36"
+  integrity sha512-N5ZAX4/LxJmF+7wN74pUD6qAh9/wnvdQcjq9TZjevvXzSUo7bfmw91saqMjzGS2xq91/odN2dW/WOl7qQHNDGA==
+
+react-dom@^17.0.0:
+  version "17.0.1"
+  resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-17.0.1.tgz#1de2560474ec9f0e334285662ede52dbc5426fc6"
+  integrity sha512-6eV150oJZ9U2t9svnsspTMrWNyHc6chX0KzDeAOXftRa8bNeOKTTfCJ7KorIwenkHd2xqVTBTCZd79yk/lx/Ug==
+  dependencies:
+    loose-envify "^1.1.0"
+    object-assign "^4.1.1"
+    scheduler "^0.20.1"
+
+react-is@^17.0.1:
+  version "17.0.1"
+  resolved "https://registry.yarnpkg.com/react-is/-/react-is-17.0.1.tgz#5b3531bd76a645a4c9fb6e693ed36419e3301339"
+  integrity sha512-NAnt2iGDXohE5LI7uBnLnqvLQMtzhkiAOLXTmv+qnF9Ky7xAPcX8Up/xWIhxvLVGJvuLiNc4xQLtuqDRzb4fSA==
+
+react@^17.0.0:
+  version "17.0.1"
+  resolved "https://registry.yarnpkg.com/react/-/react-17.0.1.tgz#6e0600416bd57574e3f86d92edba3d9008726127"
+  integrity sha512-lG9c9UuMHdcAexXtigOZLX8exLWkW0Ku29qPRU8uhF2R9BN96dLCt0psvzPLlHc5OWkgymP3qwTRgbnw5BKx3w==
+  dependencies:
+    loose-envify "^1.1.0"
+    object-assign "^4.1.1"
+
+read-pkg-up@^7.0.1:
+  version "7.0.1"
+  resolved "https://registry.yarnpkg.com/read-pkg-up/-/read-pkg-up-7.0.1.tgz#f3a6135758459733ae2b95638056e1854e7ef507"
+  integrity sha512-zK0TB7Xd6JpCLmlLmufqykGE+/TlOePD6qKClNW7hHDKFh/J7/7gCWGR7joEQEW1bKq3a3yUZSObOoWLFQ4ohg==
+  dependencies:
+    find-up "^4.1.0"
+    read-pkg "^5.2.0"
+    type-fest "^0.8.1"
+
+read-pkg@^5.2.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/read-pkg/-/read-pkg-5.2.0.tgz#7bf295438ca5a33e56cd30e053b34ee7250c93cc"
+  integrity sha512-Ug69mNOpfvKDAc2Q8DRpMjjzdtrnv9HcSMX+4VsZxD1aZ6ZzrIE7rlzXBtWTyhULSMKg076AW6WR5iZpD0JiOg==
+  dependencies:
+    "@types/normalize-package-data" "^2.4.0"
+    normalize-package-data "^2.5.0"
+    parse-json "^5.0.0"
+    type-fest "^0.6.0"
+
+regenerator-runtime@^0.13.4:
+  version "0.13.7"
+  resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.13.7.tgz#cac2dacc8a1ea675feaabaeb8ae833898ae46f55"
+  integrity sha512-a54FxoJDIr27pgf7IgeQGxmqUNYrcV338lf/6gH456HZ/PhX+5BcwHXG9ajESmwe6WRO0tAzRUrRmNONWgkrew==
+
+regenerator-transform@^0.14.2:
+  version "0.14.5"
+  resolved "https://registry.yarnpkg.com/regenerator-transform/-/regenerator-transform-0.14.5.tgz#c98da154683671c9c4dcb16ece736517e1b7feb4"
+  integrity sha512-eOf6vka5IO151Jfsw2NO9WpGX58W6wWmefK3I1zEGr0lOD0u8rwPaNqQL1aRxUaxLeKO3ArNh3VYg1KbaD+FFw==
+  dependencies:
+    "@babel/runtime" "^7.8.4"
+
+regex-not@^1.0.0, regex-not@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/regex-not/-/regex-not-1.0.2.tgz#1f4ece27e00b0b65e0247a6810e6a85d83a5752c"
+  integrity sha512-J6SDjUgDxQj5NusnOtdFxDwN/+HWykR8GELwctJ7mdqhcyy1xEc4SRFHUXvxTp661YaVKAjfRLZ9cCqS6tn32A==
+  dependencies:
+    extend-shallow "^3.0.2"
+    safe-regex "^1.1.0"
+
+remove-trailing-separator@^1.0.1:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/remove-trailing-separator/-/remove-trailing-separator-1.1.0.tgz#c24bce2a283adad5bc3f58e0d48249b92379d8ef"
+  integrity sha1-wkvOKig62tW8P1jg1IJJuSN52O8=
+
+repeat-element@^1.1.2:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/repeat-element/-/repeat-element-1.1.3.tgz#782e0d825c0c5a3bb39731f84efee6b742e6b1ce"
+  integrity sha512-ahGq0ZnV5m5XtZLMb+vP76kcAM5nkLqk0lpqAuojSKGgQtn4eRi4ZZGm2olo2zKFH+sMsWaqOCW1dqAnOru72g==
+
+repeat-string@^1.6.1:
+  version "1.6.1"
+  resolved "https://registry.yarnpkg.com/repeat-string/-/repeat-string-1.6.1.tgz#8dcae470e1c88abc2d600fff4a776286da75e637"
+  integrity sha1-jcrkcOHIirwtYA//Sndihtp15jc=
+
+request-promise-core@1.1.4:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/request-promise-core/-/request-promise-core-1.1.4.tgz#3eedd4223208d419867b78ce815167d10593a22f"
+  integrity sha512-TTbAfBBRdWD7aNNOoVOBH4pN/KigV6LyapYNNlAPA8JwbovRti1E88m3sYAwsLi5ryhPKsE9APwnjFTgdUjTpw==
+  dependencies:
+    lodash "^4.17.19"
+
+request-promise-native@^1.0.9:
+  version "1.0.9"
+  resolved "https://registry.yarnpkg.com/request-promise-native/-/request-promise-native-1.0.9.tgz#e407120526a5efdc9a39b28a5679bf47b9d9dc28"
+  integrity sha512-wcW+sIUiWnKgNY0dqCpOZkUbF/I+YPi+f09JZIDa39Ec+q82CpSYniDp+ISgTTbKmnpJWASeJBPZmoxH84wt3g==
+  dependencies:
+    request-promise-core "1.1.4"
+    stealthy-require "^1.1.1"
+    tough-cookie "^2.3.3"
+
+request@^2.88.2:
+  version "2.88.2"
+  resolved "https://registry.yarnpkg.com/request/-/request-2.88.2.tgz#d73c918731cb5a87da047e207234146f664d12b3"
+  integrity sha512-MsvtOrfG9ZcrOwAW+Qi+F6HbD0CWXEh9ou77uOb7FM2WPhwT7smM833PzanhJLsgXjN89Ir6V2PczXNnMpwKhw==
+  dependencies:
+    aws-sign2 "~0.7.0"
+    aws4 "^1.8.0"
+    caseless "~0.12.0"
+    combined-stream "~1.0.6"
+    extend "~3.0.2"
+    forever-agent "~0.6.1"
+    form-data "~2.3.2"
+    har-validator "~5.1.3"
+    http-signature "~1.2.0"
+    is-typedarray "~1.0.0"
+    isstream "~0.1.2"
+    json-stringify-safe "~5.0.1"
+    mime-types "~2.1.19"
+    oauth-sign "~0.9.0"
+    performance-now "^2.1.0"
+    qs "~6.5.2"
+    safe-buffer "^5.1.2"
+    tough-cookie "~2.5.0"
+    tunnel-agent "^0.6.0"
+    uuid "^3.3.2"
+
+require-directory@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/require-directory/-/require-directory-2.1.1.tgz#8c64ad5fd30dab1c976e2344ffe7f792a6a6df42"
+  integrity sha1-jGStX9MNqxyXbiNE/+f3kqam30I=
+
+require-main-filename@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/require-main-filename/-/require-main-filename-2.0.0.tgz#d0b329ecc7cc0f61649f62215be69af54aa8989b"
+  integrity sha512-NKN5kMDylKuldxYLSUfrbo5Tuzh4hd+2E8NPPX02mZtn1VuREQToYe/ZdlJy+J3uCpfaiGF05e7B8W0iXbQHmg==
+
+resolve-cwd@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/resolve-cwd/-/resolve-cwd-3.0.0.tgz#0f0075f1bb2544766cf73ba6a6e2adfebcb13f2d"
+  integrity sha512-OrZaX2Mb+rJCpH/6CpSqt9xFVpN++x01XnN2ie9g6P5/3xelLAkXWVADpdz1IHD/KFfEXyE6V0U01OQ3UO2rEg==
+  dependencies:
+    resolve-from "^5.0.0"
+
+resolve-from@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/resolve-from/-/resolve-from-5.0.0.tgz#c35225843df8f776df21c57557bc087e9dfdfc69"
+  integrity sha512-qYg9KP24dD5qka9J47d0aVky0N+b4fTU89LN9iDnjB5waksiC49rvMB0PrUJQGoTmH50XPiqOvAjDfaijGxYZw==
+
+resolve-url@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/resolve-url/-/resolve-url-0.2.1.tgz#2c637fe77c893afd2a663fe21aa9080068e2052a"
+  integrity sha1-LGN/53yJOv0qZj/iGqkIAGjiBSo=
+
+resolve@^1.10.0, resolve@^1.18.1:
+  version "1.20.0"
+  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.20.0.tgz#629a013fb3f70755d6f0b7935cc1c2c5378b1975"
+  integrity sha512-wENBPt4ySzg4ybFQW2TT1zMQucPK95HSh/nq2CFTZVOGut2+pQvSsgtda4d26YrYcr067wjbmzOG8byDPBX63A==
+  dependencies:
+    is-core-module "^2.2.0"
+    path-parse "^1.0.6"
+
+ret@~0.1.10:
+  version "0.1.15"
+  resolved "https://registry.yarnpkg.com/ret/-/ret-0.1.15.tgz#b8a4825d5bdb1fc3f6f53c2bc33f81388681c7bc"
+  integrity sha512-TTlYpa+OL+vMMNG24xSlQGEJ3B/RzEfUlLct7b5G/ytav+wPrplCpVMFuwzXbkecJrb6IYo1iFb0S9v37754mg==
+
+rimraf@^3.0.0:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-3.0.2.tgz#f1a5402ba6220ad52cc1282bac1ae3aa49fd061a"
+  integrity sha512-JZkJMZkAGFFPP2YqXZXPbMlMBgsxzE8ILs4lMIX/2o0L9UBw9O/Y3o6wFw/i9YLapcUJWwqbi3kdxIPdC62TIA==
+  dependencies:
+    glob "^7.1.3"
+
+rsvp@^4.8.4:
+  version "4.8.5"
+  resolved "https://registry.yarnpkg.com/rsvp/-/rsvp-4.8.5.tgz#c8f155311d167f68f21e168df71ec5b083113734"
+  integrity sha512-nfMOlASu9OnRJo1mbEk2cz0D56a1MBNrJ7orjRZQG10XDyuvwksKbuXNp6qa+kbn839HwjwhBzhFmdsaEAfauA==
+
+safe-buffer@^5.0.1, safe-buffer@^5.1.2:
+  version "5.2.1"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.2.1.tgz#1eaf9fa9bdb1fdd4ec75f58f9cdb4e6b7827eec6"
+  integrity sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==
+
+safe-buffer@~5.1.1:
+  version "5.1.2"
+  resolved "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz"
+  integrity sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==
+
+safe-regex@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/safe-regex/-/safe-regex-1.1.0.tgz#40a3669f3b077d1e943d44629e157dd48023bf2e"
+  integrity sha1-QKNmnzsHfR6UPURinhV91IAjvy4=
+  dependencies:
+    ret "~0.1.10"
+
+"safer-buffer@>= 2.1.2 < 3", safer-buffer@^2.0.2, safer-buffer@^2.1.0, safer-buffer@~2.1.0:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
+  integrity sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==
+
+sane@^4.0.3:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/sane/-/sane-4.1.0.tgz#ed881fd922733a6c461bc189dc2b6c006f3ffded"
+  integrity sha512-hhbzAgTIX8O7SHfp2c8/kREfEn4qO/9q8C9beyY6+tvZ87EpoZ3i1RIEvp27YBswnNbY9mWd6paKVmKbAgLfZA==
+  dependencies:
+    "@cnakazawa/watch" "^1.0.3"
+    anymatch "^2.0.0"
+    capture-exit "^2.0.0"
+    exec-sh "^0.3.2"
+    execa "^1.0.0"
+    fb-watchman "^2.0.0"
+    micromatch "^3.1.4"
+    minimist "^1.1.1"
+    walker "~1.0.5"
+
+saxes@^5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/saxes/-/saxes-5.0.1.tgz#eebab953fa3b7608dbe94e5dadb15c888fa6696d"
+  integrity sha512-5LBh1Tls8c9xgGjw3QrMwETmTMVk0oFgvrFSvWx62llR2hcEInrKNZ2GZCCuuy2lvWrdl5jhbpeqc5hRYKFOcw==
+  dependencies:
+    xmlchars "^2.2.0"
+
+scheduler@^0.20.1:
+  version "0.20.1"
+  resolved "https://registry.yarnpkg.com/scheduler/-/scheduler-0.20.1.tgz#da0b907e24026b01181ecbc75efdc7f27b5a000c"
+  integrity sha512-LKTe+2xNJBNxu/QhHvDR14wUXHRQbVY5ZOYpOGWRzhydZUqrLb2JBvLPY7cAqFmqrWuDED0Mjk7013SZiOz6Bw==
+  dependencies:
+    loose-envify "^1.1.0"
+    object-assign "^4.1.1"
+
+"semver@2 || 3 || 4 || 5", semver@^5.5.0, semver@^5.6.0:
+  version "5.7.1"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.1.tgz#a954f931aeba508d307bbf069eff0c01c96116f7"
+  integrity sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==
+
+semver@^6.0.0, semver@^6.3.0:
+  version "6.3.0"
+  resolved "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz"
+  integrity sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw==
+
+semver@^7.3.2:
+  version "7.3.4"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-7.3.4.tgz#27aaa7d2e4ca76452f98d3add093a72c943edc97"
+  integrity sha512-tCfb2WLjqFAtXn4KEdxIhalnRtoKFN7nAwj0B3ZXCbQloV2tq5eDbcTmT68JJD3nRJq24/XgxtQKFIpQdtvmVw==
+  dependencies:
+    lru-cache "^6.0.0"
+
+set-blocking@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/set-blocking/-/set-blocking-2.0.0.tgz#045f9782d011ae9a6803ddd382b24392b3d890f7"
+  integrity sha1-BF+XgtARrppoA93TgrJDkrPYkPc=
+
+set-value@^2.0.0, set-value@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/set-value/-/set-value-2.0.1.tgz#a18d40530e6f07de4228c7defe4227af8cad005b"
+  integrity sha512-JxHc1weCN68wRY0fhCoXpyK55m/XPHafOmK4UWD7m2CI14GMcFypt4w/0+NV5f/ZMby2F6S2wwA7fgynh9gWSw==
+  dependencies:
+    extend-shallow "^2.0.1"
+    is-extendable "^0.1.1"
+    is-plain-object "^2.0.3"
+    split-string "^3.0.1"
+
+shebang-command@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/shebang-command/-/shebang-command-1.2.0.tgz#44aac65b695b03398968c39f363fee5deafdf1ea"
+  integrity sha1-RKrGW2lbAzmJaMOfNj/uXer98eo=
+  dependencies:
+    shebang-regex "^1.0.0"
+
+shebang-command@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/shebang-command/-/shebang-command-2.0.0.tgz#ccd0af4f8835fbdc265b82461aaf0c36663f34ea"
+  integrity sha512-kHxr2zZpYtdmrN1qDjrrX/Z1rR1kG8Dx+gkpK1G4eXmvXswmcE1hTWBWYUzlraYw1/yZp6YuDY77YtvbN0dmDA==
+  dependencies:
+    shebang-regex "^3.0.0"
+
+shebang-regex@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/shebang-regex/-/shebang-regex-1.0.0.tgz#da42f49740c0b42db2ca9728571cb190c98efea3"
+  integrity sha1-2kL0l0DAtC2yypcoVxyxkMmO/qM=
+
+shebang-regex@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/shebang-regex/-/shebang-regex-3.0.0.tgz#ae16f1644d873ecad843b0307b143362d4c42172"
+  integrity sha512-7++dFhtcx3353uBaq8DDR4NuxBetBzC7ZQOhmTQInHEd6bSrXdiEyzCvG07Z44UYdLShWUyXt5M/yhz8ekcb1A==
+
+shellwords@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/shellwords/-/shellwords-0.1.1.tgz#d6b9181c1a48d397324c84871efbcfc73fc0654b"
+  integrity sha512-vFwSUfQvqybiICwZY5+DAWIPLKsWO31Q91JSKl3UYv+K5c2QRPzn0qzec6QPu1Qc9eHYItiP3NdJqNVqetYAww==
+
+signal-exit@^3.0.0, signal-exit@^3.0.2:
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.3.tgz#a1410c2edd8f077b08b4e253c8eacfcaf057461c"
+  integrity sha512-VUJ49FC8U1OxwZLxIbTTrDvLnf/6TDgxZcK8wxR8zs13xpx7xbG60ndBlhNrFi2EMuFRoeDoJO7wthSLq42EjA==
+
+sisteransi@^1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/sisteransi/-/sisteransi-1.0.5.tgz#134d681297756437cc05ca01370d3a7a571075ed"
+  integrity sha512-bLGGlR1QxBcynn2d5YmDX4MGjlZvy2MRBDRNHLJ8VI6l6+9FUiyTFNJ0IveOSP0bcXgVDPRcfGqA0pjaqUpfVg==
+
+slash@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/slash/-/slash-3.0.0.tgz#6539be870c165adbd5240220dbe361f1bc4d4634"
+  integrity sha512-g9Q1haeby36OSStwb4ntCGGGaKsaVSjQ68fBxoQcutl5fS1vuY18H3wSt3jFyFtrkx+Kz0V1G85A4MyAdDMi2Q==
+
+snapdragon-node@^2.0.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/snapdragon-node/-/snapdragon-node-2.1.1.tgz#6c175f86ff14bdb0724563e8f3c1b021a286853b"
+  integrity sha512-O27l4xaMYt/RSQ5TR3vpWCAB5Kb/czIcqUFOM/C4fYcLnbZUc1PkjTAMjof2pBWaSTwOUd6qUHcFGVGj7aIwnw==
+  dependencies:
+    define-property "^1.0.0"
+    isobject "^3.0.0"
+    snapdragon-util "^3.0.1"
+
+snapdragon-util@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/snapdragon-util/-/snapdragon-util-3.0.1.tgz#f956479486f2acd79700693f6f7b805e45ab56e2"
+  integrity sha512-mbKkMdQKsjX4BAL4bRYTj21edOf8cN7XHdYUJEe+Zn99hVEYcMvKPct1IqNe7+AZPirn8BCDOQBHQZknqmKlZQ==
+  dependencies:
+    kind-of "^3.2.0"
+
+snapdragon@^0.8.1:
+  version "0.8.2"
+  resolved "https://registry.yarnpkg.com/snapdragon/-/snapdragon-0.8.2.tgz#64922e7c565b0e14204ba1aa7d6964278d25182d"
+  integrity sha512-FtyOnWN/wCHTVXOMwvSv26d+ko5vWlIDD6zoUJ7LW8vh+ZBC8QdljveRP+crNrtBwioEUWy/4dMtbBjA4ioNlg==
+  dependencies:
+    base "^0.11.1"
+    debug "^2.2.0"
+    define-property "^0.2.5"
+    extend-shallow "^2.0.1"
+    map-cache "^0.2.2"
+    source-map "^0.5.6"
+    source-map-resolve "^0.5.0"
+    use "^3.1.0"
+
+source-map-resolve@^0.5.0:
+  version "0.5.3"
+  resolved "https://registry.yarnpkg.com/source-map-resolve/-/source-map-resolve-0.5.3.tgz#190866bece7553e1f8f267a2ee82c606b5509a1a"
+  integrity sha512-Htz+RnsXWk5+P2slx5Jh3Q66vhQj1Cllm0zvnaY98+NFx+Dv2CF/f5O/t8x+KaNdrdIAsruNzoh/KpialbqAnw==
+  dependencies:
+    atob "^2.1.2"
+    decode-uri-component "^0.2.0"
+    resolve-url "^0.2.1"
+    source-map-url "^0.4.0"
+    urix "^0.1.0"
+
+source-map-support@^0.5.16, source-map-support@^0.5.6:
+  version "0.5.19"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.19.tgz#a98b62f86dcaf4f67399648c085291ab9e8fed61"
+  integrity sha512-Wonm7zOCIJzBGQdB+thsPar0kYuCIzYvxZwlBa87yi/Mdjv7Tip2cyVbLj5o0cFPN4EVkuTwb3GDDyUx2DGnGw==
+  dependencies:
+    buffer-from "^1.0.0"
+    source-map "^0.6.0"
+
+source-map-url@^0.4.0:
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/source-map-url/-/source-map-url-0.4.1.tgz#0af66605a745a5a2f91cf1bbf8a7afbc283dec56"
+  integrity sha512-cPiFOTLUKvJFIg4SKVScy4ilPPW6rFgMgfuZJPNoDuMs3nC1HbMUycBoJw77xFIp6z1UJQJOfx6C9GMH80DiTw==
+
+source-map@^0.5.0, source-map@^0.5.6:
+  version "0.5.7"
+  resolved "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz"
+  integrity sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=
+
+source-map@^0.6.0, source-map@^0.6.1, source-map@~0.6.1:
+  version "0.6.1"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
+  integrity sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==
+
+source-map@^0.7.3:
+  version "0.7.3"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.7.3.tgz#5302f8169031735226544092e64981f751750383"
+  integrity sha512-CkCj6giN3S+n9qrYiBTX5gystlENnRW5jZeNLHpe6aue+SrHcG5VYwujhW9s4dY31mEGsxBDrHR6oI69fTXsaQ==
+
+spdx-correct@^3.0.0:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/spdx-correct/-/spdx-correct-3.1.1.tgz#dece81ac9c1e6713e5f7d1b6f17d468fa53d89a9"
+  integrity sha512-cOYcUWwhCuHCXi49RhFRCyJEK3iPj1Ziz9DpViV3tbZOwXD49QzIN3MpOLJNxh2qwq2lJJZaKMVw9qNi4jTC0w==
+  dependencies:
+    spdx-expression-parse "^3.0.0"
+    spdx-license-ids "^3.0.0"
+
+spdx-exceptions@^2.1.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/spdx-exceptions/-/spdx-exceptions-2.3.0.tgz#3f28ce1a77a00372683eade4a433183527a2163d"
+  integrity sha512-/tTrYOC7PPI1nUAgx34hUpqXuyJG+DTHJTnIULG4rDygi4xu/tfgmq1e1cIRwRzwZgo4NLySi+ricLkZkw4i5A==
+
+spdx-expression-parse@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/spdx-expression-parse/-/spdx-expression-parse-3.0.1.tgz#cf70f50482eefdc98e3ce0a6833e4a53ceeba679"
+  integrity sha512-cbqHunsQWnJNE6KhVSMsMeH5H/L9EpymbzqTQ3uLwNCLZ1Q481oWaofqH7nO6V07xlXwY6PhQdQ2IedWx/ZK4Q==
+  dependencies:
+    spdx-exceptions "^2.1.0"
+    spdx-license-ids "^3.0.0"
+
+spdx-license-ids@^3.0.0:
+  version "3.0.7"
+  resolved "https://registry.yarnpkg.com/spdx-license-ids/-/spdx-license-ids-3.0.7.tgz#e9c18a410e5ed7e12442a549fbd8afa767038d65"
+  integrity sha512-U+MTEOO0AiDzxwFvoa4JVnMV6mZlJKk2sBLt90s7G0Gd0Mlknc7kxEn3nuDPNZRta7O2uy8oLcZLVT+4sqNZHQ==
+
+split-string@^3.0.1, split-string@^3.0.2:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/split-string/-/split-string-3.1.0.tgz#7cb09dda3a86585705c64b39a6466038682e8fe2"
+  integrity sha512-NzNVhJDYpwceVVii8/Hu6DKfD2G+NrQHlS/V/qgv763EYudVwEcMQNxd2lh+0VrUByXN/oJkl5grOhYWvQUYiw==
+  dependencies:
+    extend-shallow "^3.0.0"
+
+sprintf-js@~1.0.2:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
+  integrity sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=
+
+sshpk@^1.7.0:
+  version "1.16.1"
+  resolved "https://registry.yarnpkg.com/sshpk/-/sshpk-1.16.1.tgz#fb661c0bef29b39db40769ee39fa70093d6f6877"
+  integrity sha512-HXXqVUq7+pcKeLqqZj6mHFUMvXtOJt1uoUx09pFW6011inTMxqI8BA8PM95myrIyyKwdnzjdFjLiE6KBPVtJIg==
+  dependencies:
+    asn1 "~0.2.3"
+    assert-plus "^1.0.0"
+    bcrypt-pbkdf "^1.0.0"
+    dashdash "^1.12.0"
+    ecc-jsbn "~0.1.1"
+    getpass "^0.1.1"
+    jsbn "~0.1.0"
+    safer-buffer "^2.0.2"
+    tweetnacl "~0.14.0"
+
+stack-utils@^2.0.2:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/stack-utils/-/stack-utils-2.0.3.tgz#cd5f030126ff116b78ccb3c027fe302713b61277"
+  integrity sha512-gL//fkxfWUsIlFL2Tl42Cl6+HFALEaB1FU76I/Fy+oZjRreP7OPMXFlGbxM7NQsI0ZpUfw76sHnv0WNYuTb7Iw==
+  dependencies:
+    escape-string-regexp "^2.0.0"
+
+static-extend@^0.1.1:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/static-extend/-/static-extend-0.1.2.tgz#60809c39cbff55337226fd5e0b520f341f1fb5c6"
+  integrity sha1-YICcOcv/VTNyJv1eC1IPNB8ftcY=
+  dependencies:
+    define-property "^0.2.5"
+    object-copy "^0.1.0"
+
+stealthy-require@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/stealthy-require/-/stealthy-require-1.1.1.tgz#35b09875b4ff49f26a777e509b3090a3226bf24b"
+  integrity sha1-NbCYdbT/SfJqd35QmzCQoyJr8ks=
+
+string-length@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/string-length/-/string-length-4.0.1.tgz#4a973bf31ef77c4edbceadd6af2611996985f8a1"
+  integrity sha512-PKyXUd0LK0ePjSOnWn34V2uD6acUWev9uy0Ft05k0E8xRW+SKcA0F7eMr7h5xlzfn+4O3N+55rduYyet3Jk+jw==
+  dependencies:
+    char-regex "^1.0.2"
+    strip-ansi "^6.0.0"
+
+string-width@^4.1.0, string-width@^4.2.0:
+  version "4.2.2"
+  resolved "https://registry.yarnpkg.com/string-width/-/string-width-4.2.2.tgz#dafd4f9559a7585cfba529c6a0a4f73488ebd4c5"
+  integrity sha512-XBJbT3N4JhVumXE0eoLU9DCjcaF92KLNqTmFCnG1pf8duUxFGwtP6AD6nkjw9a3IdiRtL3E2w3JDiE/xi3vOeA==
+  dependencies:
+    emoji-regex "^8.0.0"
+    is-fullwidth-code-point "^3.0.0"
+    strip-ansi "^6.0.0"
+
+strip-ansi@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-6.0.0.tgz#0b1571dd7669ccd4f3e06e14ef1eed26225ae532"
+  integrity sha512-AuvKTrTfQNYNIctbR1K/YGTR1756GycPsg7b9bdV9Duqur4gv6aKqHXah67Z8ImS7WEz5QVcOtlfW2rZEugt6w==
+  dependencies:
+    ansi-regex "^5.0.0"
+
+strip-bom@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/strip-bom/-/strip-bom-4.0.0.tgz#9c3505c1db45bcedca3d9cf7a16f5c5aa3901878"
+  integrity sha512-3xurFv5tEgii33Zi8Jtp55wEIILR9eh34FAW00PZf+JnSsTmV/ioewSgQl97JHvgjoRGwPShsWm+IdrxB35d0w==
+
+strip-eof@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/strip-eof/-/strip-eof-1.0.0.tgz#bb43ff5598a6eb05d89b59fcd129c983313606bf"
+  integrity sha1-u0P/VZim6wXYm1n80SnJgzE2Br8=
+
+strip-final-newline@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/strip-final-newline/-/strip-final-newline-2.0.0.tgz#89b852fb2fcbe936f6f4b3187afb0a12c1ab58ad"
+  integrity sha512-BrpvfNAE3dcvq7ll3xVumzjKjZQ5tI1sEUIKr3Uoks0XUl45St3FlatVqef9prk4jRDzhW6WZg+3bk93y6pLjA==
+
+supports-color@^5.3.0:
+  version "5.5.0"
+  resolved "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz"
+  integrity sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==
+  dependencies:
+    has-flag "^3.0.0"
+
+supports-color@^7.0.0, supports-color@^7.1.0:
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-7.2.0.tgz#1b7dcdcb32b8138801b3e478ba6a51caa89648da"
+  integrity sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==
+  dependencies:
+    has-flag "^4.0.0"
+
+supports-hyperlinks@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/supports-hyperlinks/-/supports-hyperlinks-2.1.0.tgz#f663df252af5f37c5d49bbd7eeefa9e0b9e59e47"
+  integrity sha512-zoE5/e+dnEijk6ASB6/qrK+oYdm2do1hjoLWrqUC/8WEIW1gbxFcKuBof7sW8ArN6e+AYvsE8HBGiVRWL/F5CA==
+  dependencies:
+    has-flag "^4.0.0"
+    supports-color "^7.0.0"
+
+symbol-tree@^3.2.4:
+  version "3.2.4"
+  resolved "https://registry.yarnpkg.com/symbol-tree/-/symbol-tree-3.2.4.tgz#430637d248ba77e078883951fb9aa0eed7c63fa2"
+  integrity sha512-9QNk5KwDF+Bvz+PyObkmSYjI5ksVUYtjW7AU22r2NKcfLJcXp96hkDWU3+XndOsUb+AQ9QhfzfCT2O+CNWT5Tw==
+
+terminal-link@^2.0.0:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/terminal-link/-/terminal-link-2.1.1.tgz#14a64a27ab3c0df933ea546fba55f2d078edc994"
+  integrity sha512-un0FmiRUQNr5PJqy9kP7c40F5BOfpGlYTrxonDChEZB7pzZxRNp/bt+ymiy9/npwXya9KH99nJ/GXFIiUkYGFQ==
+  dependencies:
+    ansi-escapes "^4.2.1"
+    supports-hyperlinks "^2.0.0"
+
+test-exclude@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/test-exclude/-/test-exclude-6.0.0.tgz#04a8698661d805ea6fa293b6cb9e63ac044ef15e"
+  integrity sha512-cAGWPIyOHU6zlmg88jwm7VRyXnMN7iV68OGAbYDk/Mh/xC/pzVPlQtY6ngoIH/5/tciuhGfvESU8GrHrcxD56w==
+  dependencies:
+    "@istanbuljs/schema" "^0.1.2"
+    glob "^7.1.4"
+    minimatch "^3.0.4"
+
+throat@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/throat/-/throat-5.0.0.tgz#c5199235803aad18754a667d659b5e72ce16764b"
+  integrity sha512-fcwX4mndzpLQKBS1DVYhGAcYaYt7vsHNIvQV+WXMvnow5cgjPphq5CaayLaGsjRdSCKZFNGt7/GYAuXaNOiYCA==
+
+tmpl@1.0.x:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/tmpl/-/tmpl-1.0.4.tgz#23640dd7b42d00433911140820e5cf440e521dd1"
+  integrity sha1-I2QN17QtAEM5ERQIIOXPRA5SHdE=
+
+to-fast-properties@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.npmjs.org/to-fast-properties/-/to-fast-properties-2.0.0.tgz"
+  integrity sha1-3F5pjL0HkmW8c+A3doGk5Og/YW4=
+
+to-object-path@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/to-object-path/-/to-object-path-0.3.0.tgz#297588b7b0e7e0ac08e04e672f85c1f4999e17af"
+  integrity sha1-KXWIt7Dn4KwI4E5nL4XB9JmeF68=
+  dependencies:
+    kind-of "^3.0.2"
+
+to-regex-range@^2.1.0:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/to-regex-range/-/to-regex-range-2.1.1.tgz#7c80c17b9dfebe599e27367e0d4dd5590141db38"
+  integrity sha1-fIDBe53+vlmeJzZ+DU3VWQFB2zg=
+  dependencies:
+    is-number "^3.0.0"
+    repeat-string "^1.6.1"
+
+to-regex-range@^5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/to-regex-range/-/to-regex-range-5.0.1.tgz#1648c44aae7c8d988a326018ed72f5b4dd0392e4"
+  integrity sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==
+  dependencies:
+    is-number "^7.0.0"
+
+to-regex@^3.0.1, to-regex@^3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/to-regex/-/to-regex-3.0.2.tgz#13cfdd9b336552f30b51f33a8ae1b42a7a7599ce"
+  integrity sha512-FWtleNAtZ/Ki2qtqej2CXTOayOH9bHDQF+Q48VpWyDXjbYxA4Yz8iDB31zXOBUlOHHKidDbqGVrTUvQMPmBGBw==
+  dependencies:
+    define-property "^2.0.2"
+    extend-shallow "^3.0.2"
+    regex-not "^1.0.2"
+    safe-regex "^1.1.0"
+
+tough-cookie@^2.3.3, tough-cookie@~2.5.0:
+  version "2.5.0"
+  resolved "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-2.5.0.tgz#cd9fb2a0aa1d5a12b473bd9fb96fa3dcff65ade2"
+  integrity sha512-nlLsUzgm1kfLXSXfRZMc1KLAugd4hqJHDTvc2hDIwS3mZAfMEuMbc03SujMF+GEcpaX/qboeycw6iO8JwVv2+g==
+  dependencies:
+    psl "^1.1.28"
+    punycode "^2.1.1"
+
+tough-cookie@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-4.0.0.tgz#d822234eeca882f991f0f908824ad2622ddbece4"
+  integrity sha512-tHdtEpQCMrc1YLrMaqXXcj6AxhYi/xgit6mZu1+EDWUn+qhUf8wMQoFIy9NXuq23zAwtcB0t/MjACGR18pcRbg==
+  dependencies:
+    psl "^1.1.33"
+    punycode "^2.1.1"
+    universalify "^0.1.2"
+
+tr46@^2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/tr46/-/tr46-2.0.2.tgz#03273586def1595ae08fedb38d7733cee91d2479"
+  integrity sha512-3n1qG+/5kg+jrbTzwAykB5yRYtQCTqOGKq5U5PE3b0a1/mzo6snDhjGS0zJVJunO0NrT3Dg1MLy5TjWP/UJppg==
+  dependencies:
+    punycode "^2.1.1"
+
+tunnel-agent@^0.6.0:
+  version "0.6.0"
+  resolved "https://registry.yarnpkg.com/tunnel-agent/-/tunnel-agent-0.6.0.tgz#27a5dea06b36b04a0a9966774b290868f0fc40fd"
+  integrity sha1-J6XeoGs2sEoKmWZ3SykIaPD8QP0=
+  dependencies:
+    safe-buffer "^5.0.1"
+
+tweetnacl@^0.14.3, tweetnacl@~0.14.0:
+  version "0.14.5"
+  resolved "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-0.14.5.tgz#5ae68177f192d4456269d108afa93ff8743f4f64"
+  integrity sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q=
+
+type-check@~0.3.2:
+  version "0.3.2"
+  resolved "https://registry.yarnpkg.com/type-check/-/type-check-0.3.2.tgz#5884cab512cf1d355e3fb784f30804b2b520db72"
+  integrity sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=
+  dependencies:
+    prelude-ls "~1.1.2"
+
+type-detect@4.0.8:
+  version "4.0.8"
+  resolved "https://registry.yarnpkg.com/type-detect/-/type-detect-4.0.8.tgz#7646fb5f18871cfbb7749e69bd39a6388eb7450c"
+  integrity sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==
+
+type-fest@^0.11.0:
+  version "0.11.0"
+  resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-0.11.0.tgz#97abf0872310fed88a5c466b25681576145e33f1"
+  integrity sha512-OdjXJxnCN1AvyLSzeKIgXTXxV+99ZuXl3Hpo9XpJAv9MBcHrrJOQ5kV7ypXOuQie+AmWG25hLbiKdwYTifzcfQ==
+
+type-fest@^0.6.0:
+  version "0.6.0"
+  resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-0.6.0.tgz#8d2a2370d3df886eb5c90ada1c5bf6188acf838b"
+  integrity sha512-q+MB8nYR1KDLrgr4G5yemftpMC7/QLqVndBmEEdqzmNj5dcFOO4Oo8qlwZE3ULT3+Zim1F8Kq4cBnikNhlCMlg==
+
+type-fest@^0.8.1:
+  version "0.8.1"
+  resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-0.8.1.tgz#09e249ebde851d3b1e48d27c105444667f17b83d"
+  integrity sha512-4dbzIzqvjtgiM5rw1k5rEHtBANKmdudhGyBEajN01fEyhaAIhsoKNy6y7+IN93IfpFtwY9iqi7kD+xwKhQsNJA==
+
+typedarray-to-buffer@^3.1.5:
+  version "3.1.5"
+  resolved "https://registry.yarnpkg.com/typedarray-to-buffer/-/typedarray-to-buffer-3.1.5.tgz#a97ee7a9ff42691b9f783ff1bc5112fe3fca9080"
+  integrity sha512-zdu8XMNEDepKKR+XYOXAVPtWui0ly0NtohUscw+UmaHiAWT8hrV1rr//H6V+0DvJ3OQ19S979M0laLfX8rm82Q==
+  dependencies:
+    is-typedarray "^1.0.0"
+
+union-value@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/union-value/-/union-value-1.0.1.tgz#0b6fe7b835aecda61c6ea4d4f02c14221e109847"
+  integrity sha512-tJfXmxMeWYnczCVs7XAEvIV7ieppALdyepWMkHkwciRpZraG/xwT+s2JN8+pr1+8jCRf80FFzvr+MpQeeoF4Xg==
+  dependencies:
+    arr-union "^3.1.0"
+    get-value "^2.0.6"
+    is-extendable "^0.1.1"
+    set-value "^2.0.1"
+
+universalify@^0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/universalify/-/universalify-0.1.2.tgz#b646f69be3942dabcecc9d6639c80dc105efaa66"
+  integrity sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg==
+
+unset-value@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/unset-value/-/unset-value-1.0.0.tgz#8376873f7d2335179ffb1e6fc3a8ed0dfc8ab559"
+  integrity sha1-g3aHP30jNRef+x5vw6jtDfyKtVk=
+  dependencies:
+    has-value "^0.3.1"
+    isobject "^3.0.0"
+
+uri-js@^4.2.2:
+  version "4.4.1"
+  resolved "https://registry.yarnpkg.com/uri-js/-/uri-js-4.4.1.tgz#9b1a52595225859e55f669d928f88c6c57f2a77e"
+  integrity sha512-7rKUyy33Q1yc98pQ1DAmLtwX109F7TIfWlW1Ydo8Wl1ii1SeHieeh0HHfPeL2fMXK6z0s8ecKs9frCuLJvndBg==
+  dependencies:
+    punycode "^2.1.0"
+
+urix@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/urix/-/urix-0.1.0.tgz#da937f7a62e21fec1fd18d49b35c2935067a6c72"
+  integrity sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=
+
+use@^3.1.0:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/use/-/use-3.1.1.tgz#d50c8cac79a19fbc20f2911f56eb973f4e10070f"
+  integrity sha512-cwESVXlO3url9YWlFW/TA9cshCEhtu7IKJ/p5soJ/gGpj7vbvFrAY/eIioQ6Dw23KjZhYgiIo8HOs1nQ2vr/oQ==
+
+uuid@^3.3.2:
+  version "3.4.0"
+  resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.4.0.tgz#b23e4358afa8a202fe7a100af1f5f883f02007ee"
+  integrity sha512-HjSDRw6gZE5JMggctHBcjVak08+KEVhSIiDzFnT9S9aegmp85S/bReBVTb4QTFaRNptJ9kuYaNhnbNEOkbKb/A==
+
+uuid@^8.3.0:
+  version "8.3.2"
+  resolved "https://registry.yarnpkg.com/uuid/-/uuid-8.3.2.tgz#80d5b5ced271bb9af6c445f21a1a04c606cefbe2"
+  integrity sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg==
+
+v8-to-istanbul@^7.0.0:
+  version "7.1.0"
+  resolved "https://registry.yarnpkg.com/v8-to-istanbul/-/v8-to-istanbul-7.1.0.tgz#5b95cef45c0f83217ec79f8fc7ee1c8b486aee07"
+  integrity sha512-uXUVqNUCLa0AH1vuVxzi+MI4RfxEOKt9pBgKwHbgH7st8Kv2P1m+jvWNnektzBh5QShF3ODgKmUFCf38LnVz1g==
+  dependencies:
+    "@types/istanbul-lib-coverage" "^2.0.1"
+    convert-source-map "^1.6.0"
+    source-map "^0.7.3"
+
+validate-npm-package-license@^3.0.1:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz#fc91f6b9c7ba15c857f4cb2c5defeec39d4f410a"
+  integrity sha512-DpKm2Ui/xN7/HQKCtpZxoRWBhZ9Z0kqtygG8XCgNQ8ZlDnxuQmWhj566j8fN4Cu3/JmbhsDo7fcAJq4s9h27Ew==
+  dependencies:
+    spdx-correct "^3.0.0"
+    spdx-expression-parse "^3.0.0"
+
+verror@1.10.0:
+  version "1.10.0"
+  resolved "https://registry.yarnpkg.com/verror/-/verror-1.10.0.tgz#3a105ca17053af55d6e270c1f8288682e18da400"
+  integrity sha1-OhBcoXBTr1XW4nDB+CiGguGNpAA=
+  dependencies:
+    assert-plus "^1.0.0"
+    core-util-is "1.0.2"
+    extsprintf "^1.2.0"
+
+w3c-hr-time@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/w3c-hr-time/-/w3c-hr-time-1.0.2.tgz#0a89cdf5cc15822df9c360543676963e0cc308cd"
+  integrity sha512-z8P5DvDNjKDoFIHK7q8r8lackT6l+jo/Ye3HOle7l9nICP9lf1Ci25fy9vHd0JOWewkIFzXIEig3TdKT7JQ5fQ==
+  dependencies:
+    browser-process-hrtime "^1.0.0"
+
+w3c-xmlserializer@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/w3c-xmlserializer/-/w3c-xmlserializer-2.0.0.tgz#3e7104a05b75146cc60f564380b7f683acf1020a"
+  integrity sha512-4tzD0mF8iSiMiNs30BiLO3EpfGLZUT2MSX/G+o7ZywDzliWQ3OPtTZ0PTC3B3ca1UAf4cJMHB+2Bf56EriJuRA==
+  dependencies:
+    xml-name-validator "^3.0.0"
+
+walker@^1.0.7, walker@~1.0.5:
+  version "1.0.7"
+  resolved "https://registry.yarnpkg.com/walker/-/walker-1.0.7.tgz#2f7f9b8fd10d677262b18a884e28d19618e028fb"
+  integrity sha1-L3+bj9ENZ3JisYqITijRlhjgKPs=
+  dependencies:
+    makeerror "1.0.x"
+
+webidl-conversions@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-5.0.0.tgz#ae59c8a00b121543a2acc65c0434f57b0fc11aff"
+  integrity sha512-VlZwKPCkYKxQgeSbH5EyngOmRp7Ww7I9rQLERETtf5ofd9pGeswWiOtogpEO850jziPRarreGxn5QIiTqpb2wA==
+
+webidl-conversions@^6.1.0:
+  version "6.1.0"
+  resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-6.1.0.tgz#9111b4d7ea80acd40f5270d666621afa78b69514"
+  integrity sha512-qBIvFLGiBpLjfwmYAaHPXsn+ho5xZnGvyGvsarywGNc8VyQJUMHJ8OBKGGrPER0okBeMDaan4mNBlgBROxuI8w==
+
+whatwg-encoding@^1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/whatwg-encoding/-/whatwg-encoding-1.0.5.tgz#5abacf777c32166a51d085d6b4f3e7d27113ddb0"
+  integrity sha512-b5lim54JOPN9HtzvK9HFXvBma/rnfFeqsic0hSpjtDbVxR3dJKLc+KB4V6GgiGOvl7CY/KNh8rxSo9DKQrnUEw==
+  dependencies:
+    iconv-lite "0.4.24"
+
+whatwg-mimetype@^2.3.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/whatwg-mimetype/-/whatwg-mimetype-2.3.0.tgz#3d4b1e0312d2079879f826aff18dbeeca5960fbf"
+  integrity sha512-M4yMwr6mAnQz76TbJm914+gPpB/nCwvZbJU28cUD6dR004SAxDLOOSUaB1JDRqLtaOV/vi0IC5lEAGFgrjGv/g==
+
+whatwg-url@^8.0.0:
+  version "8.4.0"
+  resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-8.4.0.tgz#50fb9615b05469591d2b2bd6dfaed2942ed72837"
+  integrity sha512-vwTUFf6V4zhcPkWp/4CQPr1TW9Ml6SF4lVyaIMBdJw5i6qUUJ1QWM4Z6YYVkfka0OUIzVo/0aNtGVGk256IKWw==
+  dependencies:
+    lodash.sortby "^4.7.0"
+    tr46 "^2.0.2"
+    webidl-conversions "^6.1.0"
+
+which-module@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/which-module/-/which-module-2.0.0.tgz#d9ef07dce77b9902b8a3a8fa4b31c3e3f7e6e87a"
+  integrity sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=
+
+which@^1.2.9:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/which/-/which-1.3.1.tgz#a45043d54f5805316da8d62f9f50918d3da70b0a"
+  integrity sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==
+  dependencies:
+    isexe "^2.0.0"
+
+which@^2.0.1, which@^2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/which/-/which-2.0.2.tgz#7c6a8dd0a636a0327e10b59c9286eee93f3f51b1"
+  integrity sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==
+  dependencies:
+    isexe "^2.0.0"
+
+word-wrap@~1.2.3:
+  version "1.2.3"
+  resolved "https://registry.yarnpkg.com/word-wrap/-/word-wrap-1.2.3.tgz#610636f6b1f703891bd34771ccb17fb93b47079c"
+  integrity sha512-Hz/mrNwitNRh/HUAtM/VT/5VH+ygD6DV7mYKZAtHOrbs8U7lvPS6xf7EJKMF0uW1KJCl0H701g3ZGus+muE5vQ==
+
+wrap-ansi@^6.2.0:
+  version "6.2.0"
+  resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-6.2.0.tgz#e9393ba07102e6c91a3b221478f0257cd2856e53"
+  integrity sha512-r6lPcBGxZXlIcymEu7InxDMhdW0KDxpLgoFLcguasxCaJ/SOIZwINatK9KY/tf+ZrlywOKU0UDj3ATXUBfxJXA==
+  dependencies:
+    ansi-styles "^4.0.0"
+    string-width "^4.1.0"
+    strip-ansi "^6.0.0"
+
+wrappy@1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
+  integrity sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=
+
+write-file-atomic@^3.0.0:
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/write-file-atomic/-/write-file-atomic-3.0.3.tgz#56bd5c5a5c70481cd19c571bd39ab965a5de56e8"
+  integrity sha512-AvHcyZ5JnSfq3ioSyjrBkH9yW4m7Ayk8/9My/DD9onKeu/94fwrMocemO2QAJFAlnnDN+ZDS+ZjAR5ua1/PV/Q==
+  dependencies:
+    imurmurhash "^0.1.4"
+    is-typedarray "^1.0.0"
+    signal-exit "^3.0.2"
+    typedarray-to-buffer "^3.1.5"
+
+ws@^7.4.4:
+  version "7.4.4"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-7.4.4.tgz#383bc9742cb202292c9077ceab6f6047b17f2d59"
+  integrity sha512-Qm8k8ojNQIMx7S+Zp8u/uHOx7Qazv3Yv4q68MiWWWOJhiwG5W3x7iqmRtJo8xxrciZUY4vRxUTJCKuRnF28ZZw==
+
+xml-name-validator@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/xml-name-validator/-/xml-name-validator-3.0.0.tgz#6ae73e06de4d8c6e47f9fb181f78d648ad457c6a"
+  integrity sha512-A5CUptxDsvxKJEU3yO6DuWBSJz/qizqzJKOMIfUJHETbBw/sFaDxgd6fxm1ewUaM0jZ444Fc5vC5ROYurg/4Pw==
+
+xmlchars@^2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/xmlchars/-/xmlchars-2.2.0.tgz#060fe1bcb7f9c76fe2a17db86a9bc3ab894210cb"
+  integrity sha512-JZnDKK8B0RCDw84FNdDAIpZK+JuJw+s7Lz8nksI7SIuU3UXJJslUthsi+uWBUYOwPFwW7W7PRLRfUKpxjtjFCw==
+
+y18n@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/y18n/-/y18n-4.0.1.tgz#8db2b83c31c5d75099bb890b23f3094891e247d4"
+  integrity sha512-wNcy4NvjMYL8gogWWYAO7ZFWFfHcbdbE57tZO8e4cbpj8tfUcwrwqSl3ad8HxpYWCdXcJUCeKKZS62Av1affwQ==
+
+yallist@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/yallist/-/yallist-4.0.0.tgz#9bb92790d9c0effec63be73519e11a35019a3a72"
+  integrity sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==
+
+yargs-parser@^18.1.2:
+  version "18.1.3"
+  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-18.1.3.tgz#be68c4975c6b2abf469236b0c870362fab09a7b0"
+  integrity sha512-o50j0JeToy/4K6OZcaQmW6lyXXKhq7csREXcDwk2omFPJEwUNOVtJKvmDr9EI1fAJZUyZcRF7kxGBWmRXudrCQ==
+  dependencies:
+    camelcase "^5.0.0"
+    decamelize "^1.2.0"
+
+yargs@^15.4.1:
+  version "15.4.1"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-15.4.1.tgz#0d87a16de01aee9d8bec2bfbf74f67851730f4f8"
+  integrity sha512-aePbxDmcYW++PaqBsJ+HYUFwCdv4LVvdnhBy78E57PIor8/OVvhMrADFFEDh8DHDFRv/O9i3lPhsENjO7QX0+A==
+  dependencies:
+    cliui "^6.0.0"
+    decamelize "^1.2.0"
+    find-up "^4.1.0"
+    get-caller-file "^2.0.1"
+    require-directory "^2.1.1"
+    require-main-filename "^2.0.0"
+    set-blocking "^2.0.0"
+    string-width "^4.2.0"
+    which-module "^2.0.0"
+    y18n "^4.0.0"
+    yargs-parser "^18.1.2"

From 0bbcfc27d832a22bde835d1d0bc47784bf1bab6a Mon Sep 17 00:00:00 2001
From: Rick Hanlon <rickhanlonii@gmail.com>
Date: Mon, 17 May 2021 12:56:16 -0400
Subject: [PATCH 9/9] Delete test fixture

---
 fixtures/tests/.gitignore                     |   25 -
 fixtures/tests/README.md                      |   21 -
 fixtures/tests/__tests__/all.js               |  138 -
 fixtures/tests/babel.config.json              |    5 -
 fixtures/tests/jest/test-jsdom.js             |   39 -
 fixtures/tests/jest/test-node-jsdom.js        |   19 -
 fixtures/tests/jest/test-node.js              |    9 -
 fixtures/tests/node/test-jsdom.js             |    8 -
 fixtures/tests/node/test-node.js              |    6 -
 fixtures/tests/package.json                   |   46 -
 .../tests/schedulers/pr/scheduler/LICENSE     |   21 -
 .../tests/schedulers/pr/scheduler/README.md   |    9 -
 .../schedulers/pr/scheduler/build-info.json   |    8 -
 .../cjs/scheduler-tracing.development.js      |  347 --
 .../cjs/scheduler-tracing.production.min.js   |    9 -
 .../cjs/scheduler-tracing.profiling.min.js    |   16 -
 .../scheduler-unstable_mock.development.js    |  694 ---
 .../scheduler-unstable_mock.production.min.js |   19 -
 ...cheduler-unstable_post_task.development.js |  206 -
 ...duler-unstable_post_task.production.min.js |   13 -
 .../pr/scheduler/cjs/scheduler.development.js |  609 ---
 .../scheduler/cjs/scheduler.production.min.js |   18 -
 .../tests/schedulers/pr/scheduler/index.js    |    7 -
 .../schedulers/pr/scheduler/package.json      |   40 -
 .../pr/scheduler/tracing-profiling.js         |    7 -
 .../tests/schedulers/pr/scheduler/tracing.js  |    7 -
 .../umd/scheduler-tracing.development.js      |   80 -
 .../umd/scheduler-tracing.production.min.js   |   80 -
 .../umd/scheduler-tracing.profiling.min.js    |   80 -
 .../scheduler-unstable_mock.development.js    |  693 ---
 .../scheduler-unstable_mock.production.min.js |   18 -
 .../pr/scheduler/umd/scheduler.development.js |  152 -
 .../scheduler/umd/scheduler.production.min.js |  146 -
 .../scheduler/umd/scheduler.profiling.min.js  |  146 -
 .../schedulers/pr/scheduler/unstable_mock.js  |    7 -
 .../pr/scheduler/unstable_post_task.js        |    7 -
 .../tests/schedulers/stable/scheduler/LICENSE |   21 -
 .../schedulers/stable/scheduler/README.md     |    9 -
 .../stable/scheduler/build-info.json          |    8 -
 .../cjs/scheduler-tracing.development.js      |  347 --
 .../cjs/scheduler-tracing.production.min.js   |    9 -
 .../cjs/scheduler-tracing.profiling.min.js    |   16 -
 .../scheduler-unstable_mock.development.js    |  863 ----
 .../scheduler-unstable_mock.production.min.js |   19 -
 ...cheduler-unstable_post_task.development.js |  206 -
 ...duler-unstable_post_task.production.min.js |   13 -
 .../scheduler/cjs/scheduler.development.js    |  845 ----
 .../scheduler/cjs/scheduler.production.min.js |   20 -
 .../schedulers/stable/scheduler/index.js      |    7 -
 .../stable/scheduler/tracing-profiling.js     |    7 -
 .../schedulers/stable/scheduler/tracing.js    |    7 -
 .../umd/scheduler-tracing.development.js      |   80 -
 .../umd/scheduler-tracing.production.min.js   |   80 -
 .../umd/scheduler-tracing.profiling.min.js    |   80 -
 .../scheduler-unstable_mock.development.js    |  862 ----
 .../scheduler-unstable_mock.production.min.js |   18 -
 .../scheduler/umd/scheduler.development.js    |  152 -
 .../scheduler/umd/scheduler.production.min.js |  146 -
 .../scheduler/umd/scheduler.profiling.min.js  |  146 -
 .../stable/scheduler/unstable_mock.js         |    7 -
 .../stable/scheduler/unstable_post_task.js    |    7 -
 fixtures/tests/yarn.lock                      | 3882 -----------------
 62 files changed, 11612 deletions(-)
 delete mode 100644 fixtures/tests/.gitignore
 delete mode 100644 fixtures/tests/README.md
 delete mode 100644 fixtures/tests/__tests__/all.js
 delete mode 100644 fixtures/tests/babel.config.json
 delete mode 100644 fixtures/tests/jest/test-jsdom.js
 delete mode 100644 fixtures/tests/jest/test-node-jsdom.js
 delete mode 100644 fixtures/tests/jest/test-node.js
 delete mode 100644 fixtures/tests/node/test-jsdom.js
 delete mode 100644 fixtures/tests/node/test-node.js
 delete mode 100644 fixtures/tests/package.json
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/LICENSE
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/README.md
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/build-info.json
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.development.js
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.production.min.js
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.profiling.min.js
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_mock.development.js
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_mock.production.min.js
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_post_task.development.js
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_post_task.production.min.js
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/cjs/scheduler.development.js
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/cjs/scheduler.production.min.js
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/index.js
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/package.json
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/tracing-profiling.js
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/tracing.js
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.development.js
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.production.min.js
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.profiling.min.js
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/umd/scheduler-unstable_mock.development.js
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/umd/scheduler-unstable_mock.production.min.js
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/umd/scheduler.development.js
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/umd/scheduler.production.min.js
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/umd/scheduler.profiling.min.js
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/unstable_mock.js
 delete mode 100644 fixtures/tests/schedulers/pr/scheduler/unstable_post_task.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/LICENSE
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/README.md
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/build-info.json
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.development.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.production.min.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.profiling.min.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_mock.development.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_mock.production.min.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_post_task.development.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_post_task.production.min.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/cjs/scheduler.development.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/cjs/scheduler.production.min.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/index.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/tracing-profiling.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/tracing.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.development.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.production.min.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.profiling.min.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/umd/scheduler-unstable_mock.development.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/umd/scheduler-unstable_mock.production.min.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/umd/scheduler.development.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/umd/scheduler.production.min.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/umd/scheduler.profiling.min.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/unstable_mock.js
 delete mode 100644 fixtures/tests/schedulers/stable/scheduler/unstable_post_task.js
 delete mode 100644 fixtures/tests/yarn.lock

diff --git a/fixtures/tests/.gitignore b/fixtures/tests/.gitignore
deleted file mode 100644
index 3473f8a18efa5..0000000000000
--- a/fixtures/tests/.gitignore
+++ /dev/null
@@ -1,25 +0,0 @@
-# See http://help.github.com/ignore-files/ for more about ignoring files.
-
-# dependencies
-node_modules
-
-# testing
-coverage
-
-# production
-build
-public/scheduler-unstable_mock.development.js
-public/scheduler-unstable_mock.production.min.js
-public/react.development.js
-public/react.production.min.js
-public/react-dom.development.js
-public/react-dom.production.min.js
-public/react-dom-server.browser.development.js
-public/react-dom-server.browser.production.min.js
-public/react-dom-test-utils.development.js
-public/react-dom-test-utils.production.min.js
-
-# misc
-.DS_Store
-.env
-npm-debug.log
diff --git a/fixtures/tests/README.md b/fixtures/tests/README.md
deleted file mode 100644
index 6dfb27d45d74a..0000000000000
--- a/fixtures/tests/README.md
+++ /dev/null
@@ -1,21 +0,0 @@
-## Overview
-
-Use nvm to switch node versions.
-
-### Node <15
-- Node<15
-- Node<15 + jsdom
-- Node<15 + jest + jest-environment-node
-- Node<15 + jest + jest-environment-node + jsdom
-- Node<15 + jest + jest-environment-jsdom + jsdom
-
-### Node >= 15
-- Node>=15
-- Node>=15 + jsdom
-- Node>=15 + jest + jest-environment-node
-- Node>=15 + jest + jest-environment-node + jsdom
-- Node>=15 + jest + jest-environment-jsdom + jsdom
-
-### Other
-- Browser
-- React Native
diff --git a/fixtures/tests/__tests__/all.js b/fixtures/tests/__tests__/all.js
deleted file mode 100644
index 4b3b23d2620db..0000000000000
--- a/fixtures/tests/__tests__/all.js
+++ /dev/null
@@ -1,138 +0,0 @@
-/** @jest-environment node */
-
-
-const { spawn, exec } = require('child_process');
-
-const NODE_14_TEST_CASES = [
-  ['node-14'],
-  ["node-14"],
-  ["node-14-jsdom"],
-  ["node-14-jest-env-node"],
-  ["node-14-jest-env-node-jsdom"],
-  ["node-14-jest-env-jsdom"]
-]
-
-const NODE_15_TEST_CASES = [
-  ['node-15'],
-  ["node-15"],
-  ["node-15-jsdom"],
-  ["node-15-jest-env-node"],
-  ["node-15-jest-env-node-jsdom"],
-  ["node-15-jest-env-jsdom"]
-];
-
-describe.each([['Node <15', NODE_14_TEST_CASES], ['Node 15', NODE_15_TEST_CASES]])('$s', (label, cases) => {
-  if (process.env.DEBUG) {
-    console.log('Running', label);
-  }
-
-it.each(cases)('%s', (command, done) => {
-  const test = spawn('yarn', [command], {detached: true});
-  let finished = false;
-  let timeout;
-
-  function debug(...args) {
-    if (!finished && process.env.DEBUG) {
-      console.log(command, ...args);
-    }
-  }
-
-  debug(`testing ${command}...`);
-
-  function processResult(reason) {
-    if (!finished) {
-      finished = true;
-      clearTimeout(timeout);
-      try {
-        expect(command).toPass(reason);
-      } finally {
-        done();
-      }
-
-    }
-  }
-
-  test.stderr.on('data', (data) => {
-    debug('err', data.toString());
-    if (data.toString().indexOf('STARTED') >= 0) {
-      if (!timeout) {
-        debug('schduling stderr timeout');
-        timeout = setTimeout(() => {
-          debug('timed out in stderr, killing');
-          test.kill('SIGKILL');
-          processResult('TIMEOUT');
-        }, 10000);
-      } else {
-        debug('timeout already set');
-      }
-    }
-  });
-  test.stdout.on('data', (data) => {
-    debug('out', data.toString());
-    if (data.toString().indexOf('STARTED') >= 0) {
-      if (!timeout) {
-        debug('schduling stdout timeout');
-        timeout = setTimeout(() => {
-          debug('timed out in out, killing');
-          process.kill(-test.pid);
-          processResult('TIMEOUT');
-        }, 10000);
-      } else {
-        debug('timeout already set');
-      }
-    }
-  });
-  test.on('close', (code) => {
-    debug('closed', code);
-
-    if (code !== 0) {
-      processResult('FAILED');
-    } else {
-      processResult('SUCCESS');
-    }
-
-  });
-
-  test.on('error', (err) => {
-    debug('error', err);
-    processResult('ERROR');
-  });
-
-  test.on('SIGKILL', () => {
-    debug('killed');
-    processResult('KILLED');
-  });
-});
-});
-
-expect.extend({
-  toPass(command, reason) {
-    const pass = reason === 'SUCCESS';
-    function getCommand() {
-      return `(yarn ${command})`
-    }
-    if (pass) {
-      return {
-        message: () =>
-          `expected ${command} not to pass`,
-        pass: true,
-      };
-    } else {
-      return {
-        message: () => {
-          switch(reason) {
-            case 'FAILED':
-              return `expected ${command} to pass but it failed ${getCommand()}`;
-            case 'TIMEOUT':
-              return `expected ${command} to pass but it hung ${getCommand()}`;
-            case 'ERROR':
-              return `expected ${command} to pass but it errored ${getCommand()}`;
-            default:
-              return `expected ${command} to pass but it failed for an unknown reason ${reason}`;
-          }
-        },
-        pass: false,
-      };
-    }
-  },
-});
diff --git a/fixtures/tests/babel.config.json b/fixtures/tests/babel.config.json
deleted file mode 100644
index 49c8f3ff0111d..0000000000000
--- a/fixtures/tests/babel.config.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-  "ignore": [],
-  "presets": ["@babel/preset-env", "@babel/preset-flow", "@babel/preset-react"]
-
-}
diff --git a/fixtures/tests/jest/test-jsdom.js b/fixtures/tests/jest/test-jsdom.js
deleted file mode 100644
index caeb1ae28c54b..0000000000000
--- a/fixtures/tests/jest/test-jsdom.js
+++ /dev/null
@@ -1,39 +0,0 @@
-/** @jest-environment jsdom */
-
-console.log('STARTED');
-
-beforeEach(() => {
-  jest.resetModules();
-})
-
-it('should not crash in jsdom env', () => {
-  require('scheduler');
-});
-
-it('should not crash in jsdom env with jest jsdom', () => {
-  const React = require('react');
-  const ReactDOM = require('react-dom');
-  function Effecty() {
-    React.useEffect(() => {}, []);
-    return null;
-  }
-
-  ReactDOM.render(<Effecty />, document.createElement('div'));
-});
-
-it('should not crash in jsdom env with jsdom', () => {
-  var { JSDOM } = require('jsdom');
-  var { window } = new JSDOM();
-  global.window = window;
-  global.document = window.document;
-  global.navigator = {userAgent: ''}
-  const React = require('react');
-  const ReactDOM = require('react-dom');
-
-  function Effecty() {
-    React.useEffect(() => {}, []);
-    return null;
-  }
-
-  ReactDOM.render(<Effecty />, document.createElement('div'));
-});
diff --git a/fixtures/tests/jest/test-node-jsdom.js b/fixtures/tests/jest/test-node-jsdom.js
deleted file mode 100644
index 1b5c12def5e60..0000000000000
--- a/fixtures/tests/jest/test-node-jsdom.js
+++ /dev/null
@@ -1,19 +0,0 @@
-/** @jest-environment node */
-
-console.log('STARTED');
-
-it('should not crash in node env with jsdom', () => {
-  var { JSDOM } = require('jsdom');
-  var { window } = new JSDOM();
-  global.window = window;
-  global.document = window.document;
-  global.navigator = {userAgent: ''}
-  const React = require('react');
-  const ReactDOM = require('react-dom');
-  function Effecty() {
-    React.useEffect(() => {}, []);
-    return null;
-  }
-
-  ReactDOM.render(<Effecty />, document.createElement('div'));
-});
diff --git a/fixtures/tests/jest/test-node.js b/fixtures/tests/jest/test-node.js
deleted file mode 100644
index 28e203cc819c5..0000000000000
--- a/fixtures/tests/jest/test-node.js
+++ /dev/null
@@ -1,9 +0,0 @@
-/** @jest-environment node */
-
-console.log('STARTED');
-
-it('should not crash in node env', () => {
-  global.window = global;
-
-  require('scheduler');
-});
diff --git a/fixtures/tests/node/test-jsdom.js b/fixtures/tests/node/test-jsdom.js
deleted file mode 100644
index e79ecc6f7d2bc..0000000000000
--- a/fixtures/tests/node/test-jsdom.js
+++ /dev/null
@@ -1,8 +0,0 @@
-console.log('STARTED');
-
-var { JSDOM } = require('jsdom');
-var { window } = new JSDOM();
-global.window = window;
-global.document = window.document;
-
-require('scheduler');
diff --git a/fixtures/tests/node/test-node.js b/fixtures/tests/node/test-node.js
deleted file mode 100644
index fa3674e6f7de6..0000000000000
--- a/fixtures/tests/node/test-node.js
+++ /dev/null
@@ -1,6 +0,0 @@
-global.__VARIANT__ = true;
-
-console.log('STARTED');
-
-global.window = global; // simulate JSDOM
-require('scheduler');
diff --git a/fixtures/tests/package.json b/fixtures/tests/package.json
deleted file mode 100644
index 3d0eb5b7cf855..0000000000000
--- a/fixtures/tests/package.json
+++ /dev/null
@@ -1,46 +0,0 @@
-{
-  "name": "react-fixtures",
-  "version": "0.1.0",
-  "private": true,
-  "devDependencies": {
-    "@babel/core": "^7.13.10",
-    "@babel/plugin-transform-regenerator": "^7.12.13",
-    "@babel/preset-flow": "^7.12.13",
-    "@babel/preset-react": "^7.12.13",
-    "@babel/register": "^7.13.8"
-  },
-  "dependencies": {
-    "jest": "^26.6.3",
-    "node-14": "npm:node@14",
-    "node-15": "npm:node@15",
-    "react": "^17.0.0",
-    "react-dom": "^17.0.0",
-    "scheduler": "^0.20.1"
-  },
-  "scripts": {
-    "test-all": "jest all.js",
-    "node-14": "node_modules/node-14/bin/node node/test-node.js",
-    "node-14-jsdom": "node_modules/node-14/bin/node node/test-jsdom.js",
-    "node-14-jest-env-node": "node_modules/node-14/bin/node node_modules/jest-cli/bin/jest.js jest/test-jsdom.js",
-    "node-14-jest-env-node-jsdom": "node_modules/node-14/bin/node node_modules/jest-cli/bin/jest.js jest/test-node-jsdom.js",
-    "node-14-jest-env-jsdom": "node_modules/node-14/bin/node node_modules/jest-cli/bin/jest.js jest/test-jsdom.js",
-    "node-15": "node_modules/node-15/bin/node node/test-node.js",
-    "node-15-jsdom": "node_modules/node-15/bin/node node/test-jsdom.js",
-    "node-15-jest-env-node": "node_modules/node-15/bin/node node_modules/jest-cli/bin/jest.js jest/test-jsdom.js",
-    "node-15-jest-env-node-jsdom": "node_modules/node-15/bin/node node_modules/jest-cli/bin/jest.js jest/test-node-jsdom.js",
-    "node-15-jest-env-jsdom": "node_modules/node-15/bin/node node_modules/jest-cli/bin/jest.js jest/test-jsdom.js",
-    "main": "cp -a ./schedulers/main/. node_modules/scheduler",
-    "pr": "cp -a ./schedulers/pr/. node_modules/scheduler",
-    "stable": "cp -a ./schedulers/stable/. node_modules/"
-  },
-  "jest": {
-    "testTimeout": 20000,
-    "testMatch": [
-      "**/jest/*.js",
-      "**/__tests__/*.js"
-    ],
-    "modulePathIgnorePatterns": [
-      "<rootDir>[/\\\\](schedulers)[/\\\\]"
-    ]
-  }
-}
diff --git a/fixtures/tests/schedulers/pr/scheduler/LICENSE b/fixtures/tests/schedulers/pr/scheduler/LICENSE
deleted file mode 100644
index b96dcb0480a0b..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/LICENSE
+++ /dev/null
@@ -1,21 +0,0 @@
-MIT License
-
-Copyright (c) Facebook, Inc. and its affiliates.
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
diff --git a/fixtures/tests/schedulers/pr/scheduler/README.md b/fixtures/tests/schedulers/pr/scheduler/README.md
deleted file mode 100644
index 10e4937a05b96..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/README.md
+++ /dev/null
@@ -1,9 +0,0 @@
-# `scheduler`
-
-This is a package for cooperative scheduling in a browser environment. It is currently used internally by React, but we plan to make it more generic.
-
-The public API for this package is not yet finalized.
-
-### Thanks
-
-The React team thanks [Anton Podviaznikov](https://podviaznikov.com/) for donating the `scheduler` package name.
diff --git a/fixtures/tests/schedulers/pr/scheduler/build-info.json b/fixtures/tests/schedulers/pr/scheduler/build-info.json
deleted file mode 100644
index 5617e884a6192..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/build-info.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "branch": "17.0.1",
-  "buildNumber": "222790",
-  "checksum": "addb3df",
-  "commit": "8e5adfbd7",
-  "environment": "ci",
-  "reactVersion": "17.0.0-8e5adfbd7"
-}
diff --git a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.development.js b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.development.js
deleted file mode 100644
index 6f7c7b1d9afb2..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.development.js
+++ /dev/null
@@ -1,347 +0,0 @@
-/** @license React vundefined
- * scheduler-tracing.development.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-'use strict';
-
-if (process.env.NODE_ENV !== "production") {
-  (function() {
-'use strict';
-
-var DEFAULT_THREAD_ID = 0; // Counters used to generate unique IDs.
-
-var interactionIDCounter = 0;
-var threadIDCounter = 0; // Set of currently traced interactions.
-// Interactions "stack"–
-// Meaning that newly traced interactions are appended to the previously active set.
-// When an interaction goes out of scope, the previous set (if any) is restored.
-
-exports.__interactionsRef = null; // Listener(s) to notify when interactions begin and end.
-
-exports.__subscriberRef = null;
-
-{
-  exports.__interactionsRef = {
-    current: new Set()
-  };
-  exports.__subscriberRef = {
-    current: null
-  };
-}
-function unstable_clear(callback) {
-
-  var prevInteractions = exports.__interactionsRef.current;
-  exports.__interactionsRef.current = new Set();
-
-  try {
-    return callback();
-  } finally {
-    exports.__interactionsRef.current = prevInteractions;
-  }
-}
-function unstable_getCurrent() {
-  {
-    return exports.__interactionsRef.current;
-  }
-}
-function unstable_getThreadID() {
-  return ++threadIDCounter;
-}
-function unstable_trace(name, timestamp, callback) {
-  var threadID = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : DEFAULT_THREAD_ID;
-
-  var interaction = {
-    __count: 1,
-    id: interactionIDCounter++,
-    name: name,
-    timestamp: timestamp
-  };
-  var prevInteractions = exports.__interactionsRef.current; // Traced interactions should stack/accumulate.
-  // To do that, clone the current interactions.
-  // The previous set will be restored upon completion.
-
-  var interactions = new Set(prevInteractions);
-  interactions.add(interaction);
-  exports.__interactionsRef.current = interactions;
-  var subscriber = exports.__subscriberRef.current;
-  var returnValue;
-
-  try {
-    if (subscriber !== null) {
-      subscriber.onInteractionTraced(interaction);
-    }
-  } finally {
-    try {
-      if (subscriber !== null) {
-        subscriber.onWorkStarted(interactions, threadID);
-      }
-    } finally {
-      try {
-        returnValue = callback();
-      } finally {
-        exports.__interactionsRef.current = prevInteractions;
-
-        try {
-          if (subscriber !== null) {
-            subscriber.onWorkStopped(interactions, threadID);
-          }
-        } finally {
-          interaction.__count--; // If no async work was scheduled for this interaction,
-          // Notify subscribers that it's completed.
-
-          if (subscriber !== null && interaction.__count === 0) {
-            subscriber.onInteractionScheduledWorkCompleted(interaction);
-          }
-        }
-      }
-    }
-  }
-
-  return returnValue;
-}
-function unstable_wrap(callback) {
-  var threadID = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : DEFAULT_THREAD_ID;
-
-  var wrappedInteractions = exports.__interactionsRef.current;
-  var subscriber = exports.__subscriberRef.current;
-
-  if (subscriber !== null) {
-    subscriber.onWorkScheduled(wrappedInteractions, threadID);
-  } // Update the pending async work count for the current interactions.
-  // Update after calling subscribers in case of error.
-
-
-  wrappedInteractions.forEach(function (interaction) {
-    interaction.__count++;
-  });
-  var hasRun = false;
-
-  function wrapped() {
-    var prevInteractions = exports.__interactionsRef.current;
-    exports.__interactionsRef.current = wrappedInteractions;
-    subscriber = exports.__subscriberRef.current;
-
-    try {
-      var returnValue;
-
-      try {
-        if (subscriber !== null) {
-          subscriber.onWorkStarted(wrappedInteractions, threadID);
-        }
-      } finally {
-        try {
-          returnValue = callback.apply(undefined, arguments);
-        } finally {
-          exports.__interactionsRef.current = prevInteractions;
-
-          if (subscriber !== null) {
-            subscriber.onWorkStopped(wrappedInteractions, threadID);
-          }
-        }
-      }
-
-      return returnValue;
-    } finally {
-      if (!hasRun) {
-        // We only expect a wrapped function to be executed once,
-        // But in the event that it's executed more than once–
-        // Only decrement the outstanding interaction counts once.
-        hasRun = true; // Update pending async counts for all wrapped interactions.
-        // If this was the last scheduled async work for any of them,
-        // Mark them as completed.
-
-        wrappedInteractions.forEach(function (interaction) {
-          interaction.__count--;
-
-          if (subscriber !== null && interaction.__count === 0) {
-            subscriber.onInteractionScheduledWorkCompleted(interaction);
-          }
-        });
-      }
-    }
-  }
-
-  wrapped.cancel = function cancel() {
-    subscriber = exports.__subscriberRef.current;
-
-    try {
-      if (subscriber !== null) {
-        subscriber.onWorkCanceled(wrappedInteractions, threadID);
-      }
-    } finally {
-      // Update pending async counts for all wrapped interactions.
-      // If this was the last scheduled async work for any of them,
-      // Mark them as completed.
-      wrappedInteractions.forEach(function (interaction) {
-        interaction.__count--;
-
-        if (subscriber && interaction.__count === 0) {
-          subscriber.onInteractionScheduledWorkCompleted(interaction);
-        }
-      });
-    }
-  };
-
-  return wrapped;
-}
-
-var subscribers = null;
-
-{
-  subscribers = new Set();
-}
-
-function unstable_subscribe(subscriber) {
-  {
-    subscribers.add(subscriber);
-
-    if (subscribers.size === 1) {
-      exports.__subscriberRef.current = {
-        onInteractionScheduledWorkCompleted: onInteractionScheduledWorkCompleted,
-        onInteractionTraced: onInteractionTraced,
-        onWorkCanceled: onWorkCanceled,
-        onWorkScheduled: onWorkScheduled,
-        onWorkStarted: onWorkStarted,
-        onWorkStopped: onWorkStopped
-      };
-    }
-  }
-}
-function unstable_unsubscribe(subscriber) {
-  {
-    subscribers.delete(subscriber);
-
-    if (subscribers.size === 0) {
-      exports.__subscriberRef.current = null;
-    }
-  }
-}
-
-function onInteractionTraced(interaction) {
-  var didCatchError = false;
-  var caughtError = null;
-  subscribers.forEach(function (subscriber) {
-    try {
-      subscriber.onInteractionTraced(interaction);
-    } catch (error) {
-      if (!didCatchError) {
-        didCatchError = true;
-        caughtError = error;
-      }
-    }
-  });
-
-  if (didCatchError) {
-    throw caughtError;
-  }
-}
-
-function onInteractionScheduledWorkCompleted(interaction) {
-  var didCatchError = false;
-  var caughtError = null;
-  subscribers.forEach(function (subscriber) {
-    try {
-      subscriber.onInteractionScheduledWorkCompleted(interaction);
-    } catch (error) {
-      if (!didCatchError) {
-        didCatchError = true;
-        caughtError = error;
-      }
-    }
-  });
-
-  if (didCatchError) {
-    throw caughtError;
-  }
-}
-
-function onWorkScheduled(interactions, threadID) {
-  var didCatchError = false;
-  var caughtError = null;
-  subscribers.forEach(function (subscriber) {
-    try {
-      subscriber.onWorkScheduled(interactions, threadID);
-    } catch (error) {
-      if (!didCatchError) {
-        didCatchError = true;
-        caughtError = error;
-      }
-    }
-  });
-
-  if (didCatchError) {
-    throw caughtError;
-  }
-}
-
-function onWorkStarted(interactions, threadID) {
-  var didCatchError = false;
-  var caughtError = null;
-  subscribers.forEach(function (subscriber) {
-    try {
-      subscriber.onWorkStarted(interactions, threadID);
-    } catch (error) {
-      if (!didCatchError) {
-        didCatchError = true;
-        caughtError = error;
-      }
-    }
-  });
-
-  if (didCatchError) {
-    throw caughtError;
-  }
-}
-
-function onWorkStopped(interactions, threadID) {
-  var didCatchError = false;
-  var caughtError = null;
-  subscribers.forEach(function (subscriber) {
-    try {
-      subscriber.onWorkStopped(interactions, threadID);
-    } catch (error) {
-      if (!didCatchError) {
-        didCatchError = true;
-        caughtError = error;
-      }
-    }
-  });
-
-  if (didCatchError) {
-    throw caughtError;
-  }
-}
-
-function onWorkCanceled(interactions, threadID) {
-  var didCatchError = false;
-  var caughtError = null;
-  subscribers.forEach(function (subscriber) {
-    try {
-      subscriber.onWorkCanceled(interactions, threadID);
-    } catch (error) {
-      if (!didCatchError) {
-        didCatchError = true;
-        caughtError = error;
-      }
-    }
-  });
-
-  if (didCatchError) {
-    throw caughtError;
-  }
-}
-
-exports.unstable_clear = unstable_clear;
-exports.unstable_getCurrent = unstable_getCurrent;
-exports.unstable_getThreadID = unstable_getThreadID;
-exports.unstable_subscribe = unstable_subscribe;
-exports.unstable_trace = unstable_trace;
-exports.unstable_unsubscribe = unstable_unsubscribe;
-exports.unstable_wrap = unstable_wrap;
-  })();
-}
diff --git a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.production.min.js b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.production.min.js
deleted file mode 100644
index a633bc54cbbe0..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.production.min.js
+++ /dev/null
@@ -1,9 +0,0 @@
-/** @license React vundefined
- * scheduler-tracing.production.min.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-'use strict';var b=0;exports.__interactionsRef=null;exports.__subscriberRef=null;exports.unstable_clear=function(a){return a()};exports.unstable_getCurrent=function(){return null};exports.unstable_getThreadID=function(){return++b};exports.unstable_subscribe=function(){};exports.unstable_trace=function(a,d,c){return c()};exports.unstable_unsubscribe=function(){};exports.unstable_wrap=function(a){return a};
diff --git a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.profiling.min.js b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.profiling.min.js
deleted file mode 100644
index d7d849b85057c..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-tracing.profiling.min.js
+++ /dev/null
@@ -1,16 +0,0 @@
-/** @license React vundefined
- * scheduler-tracing.profiling.min.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-'use strict';var g=0,l=0;exports.__interactionsRef=null;exports.__subscriberRef=null;exports.__interactionsRef={current:new Set};exports.__subscriberRef={current:null};var m=null;m=new Set;function n(e){var d=!1,a=null;m.forEach(function(c){try{c.onInteractionTraced(e)}catch(b){d||(d=!0,a=b)}});if(d)throw a;}function p(e){var d=!1,a=null;m.forEach(function(c){try{c.onInteractionScheduledWorkCompleted(e)}catch(b){d||(d=!0,a=b)}});if(d)throw a;}
-function q(e,d){var a=!1,c=null;m.forEach(function(b){try{b.onWorkScheduled(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}function r(e,d){var a=!1,c=null;m.forEach(function(b){try{b.onWorkStarted(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}function t(e,d){var a=!1,c=null;m.forEach(function(b){try{b.onWorkStopped(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}function u(e,d){var a=!1,c=null;m.forEach(function(b){try{b.onWorkCanceled(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}
-exports.unstable_clear=function(e){var d=exports.__interactionsRef.current;exports.__interactionsRef.current=new Set;try{return e()}finally{exports.__interactionsRef.current=d}};exports.unstable_getCurrent=function(){return exports.__interactionsRef.current};exports.unstable_getThreadID=function(){return++l};
-exports.unstable_subscribe=function(e){m.add(e);1===m.size&&(exports.__subscriberRef.current={onInteractionScheduledWorkCompleted:p,onInteractionTraced:n,onWorkCanceled:u,onWorkScheduled:q,onWorkStarted:r,onWorkStopped:t})};
-exports.unstable_trace=function(e,d,a){var c=3<arguments.length&&void 0!==arguments[3]?arguments[3]:0,b={__count:1,id:g++,name:e,timestamp:d},f=exports.__interactionsRef.current,k=new Set(f);k.add(b);exports.__interactionsRef.current=k;var h=exports.__subscriberRef.current;try{if(null!==h)h.onInteractionTraced(b)}finally{try{if(null!==h)h.onWorkStarted(k,c)}finally{try{var v=a()}finally{exports.__interactionsRef.current=f;try{if(null!==h)h.onWorkStopped(k,c)}finally{if(b.__count--,null!==h&&0===b.__count)h.onInteractionScheduledWorkCompleted(b)}}}}return v};
-exports.unstable_unsubscribe=function(e){m.delete(e);0===m.size&&(exports.__subscriberRef.current=null)};
-exports.unstable_wrap=function(e){function d(){var d=exports.__interactionsRef.current;exports.__interactionsRef.current=c;b=exports.__subscriberRef.current;try{try{if(null!==b)b.onWorkStarted(c,a)}finally{try{var h=e.apply(void 0,arguments)}finally{if(exports.__interactionsRef.current=d,null!==b)b.onWorkStopped(c,a)}}return h}finally{f||(f=!0,c.forEach(function(a){a.__count--;if(null!==b&&0===a.__count)b.onInteractionScheduledWorkCompleted(a)}))}}var a=1<arguments.length&&void 0!==arguments[1]?arguments[1]:
-0,c=exports.__interactionsRef.current,b=exports.__subscriberRef.current;if(null!==b)b.onWorkScheduled(c,a);c.forEach(function(a){a.__count++});var f=!1;d.cancel=function(){b=exports.__subscriberRef.current;try{if(null!==b)b.onWorkCanceled(c,a)}finally{c.forEach(function(a){a.__count--;if(b&&0===a.__count)b.onInteractionScheduledWorkCompleted(a)})}};return d};
diff --git a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_mock.development.js b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_mock.development.js
deleted file mode 100644
index e2c6dd560abe9..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_mock.development.js
+++ /dev/null
@@ -1,694 +0,0 @@
-/** @license React vundefined
- * scheduler-unstable_mock.development.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-'use strict';
-
-if (process.env.NODE_ENV !== "production") {
-  (function() {
-'use strict';
-
-var enableSchedulerDebugging = false;
-var enableProfiling = false;
-
-function push(heap, node) {
-  var index = heap.length;
-  heap.push(node);
-  siftUp(heap, node, index);
-}
-function peek(heap) {
-  var first = heap[0];
-  return first === undefined ? null : first;
-}
-function pop(heap) {
-  var first = heap[0];
-
-  if (first !== undefined) {
-    var last = heap.pop();
-
-    if (last !== first) {
-      heap[0] = last;
-      siftDown(heap, last, 0);
-    }
-
-    return first;
-  } else {
-    return null;
-  }
-}
-
-function siftUp(heap, node, i) {
-  var index = i;
-
-  while (true) {
-    var parentIndex = index - 1 >>> 1;
-    var parent = heap[parentIndex];
-
-    if (parent !== undefined && compare(parent, node) > 0) {
-      // The parent is larger. Swap positions.
-      heap[parentIndex] = node;
-      heap[index] = parent;
-      index = parentIndex;
-    } else {
-      // The parent is smaller. Exit.
-      return;
-    }
-  }
-}
-
-function siftDown(heap, node, i) {
-  var index = i;
-  var length = heap.length;
-
-  while (index < length) {
-    var leftIndex = (index + 1) * 2 - 1;
-    var left = heap[leftIndex];
-    var rightIndex = leftIndex + 1;
-    var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those.
-
-    if (left !== undefined && compare(left, node) < 0) {
-      if (right !== undefined && compare(right, left) < 0) {
-        heap[index] = right;
-        heap[rightIndex] = node;
-        index = rightIndex;
-      } else {
-        heap[index] = left;
-        heap[leftIndex] = node;
-        index = leftIndex;
-      }
-    } else if (right !== undefined && compare(right, node) < 0) {
-      heap[index] = right;
-      heap[rightIndex] = node;
-      index = rightIndex;
-    } else {
-      // Neither child is smaller. Exit.
-      return;
-    }
-  }
-}
-
-function compare(a, b) {
-  // Compare sort index first, then task id.
-  var diff = a.sortIndex - b.sortIndex;
-  return diff !== 0 ? diff : a.id - b.id;
-}
-
-// TODO: Use symbols?
-var ImmediatePriority = 1;
-var UserBlockingPriority = 2;
-var NormalPriority = 3;
-var LowPriority = 4;
-var IdlePriority = 5;
-
-function markTaskErrored(task, ms) {
-}
-
-/* eslint-disable no-var */
-// Math.pow(2, 30) - 1
-// 0b111111111111111111111111111111
-
-var maxSigned31BitInt = 1073741823; // Times out immediately
-
-var IMMEDIATE_PRIORITY_TIMEOUT = -1; // Eventually times out
-
-var USER_BLOCKING_PRIORITY_TIMEOUT = 250;
-var NORMAL_PRIORITY_TIMEOUT = 5000;
-var LOW_PRIORITY_TIMEOUT = 10000; // Never times out
-
-var IDLE_PRIORITY_TIMEOUT = maxSigned31BitInt; // Tasks are stored on a min heap
-
-var taskQueue = [];
-var timerQueue = []; // Incrementing id counter. Used to maintain insertion order.
-
-var taskIdCounter = 1; // Pausing the scheduler is useful for debugging.
-var currentTask = null;
-var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrancy.
-
-var isPerformingWork = false;
-var isHostCallbackScheduled = false;
-var isHostTimeoutScheduled = false;
-var currentMockTime = 0;
-var scheduledCallback = null;
-var scheduledTimeout = null;
-var timeoutTime = -1;
-var yieldedValues = null;
-var expectedNumberOfYields = -1;
-var didStop = false;
-var isFlushing = false;
-var needsPaint = false;
-var shouldYieldForPaint = false;
-
-function advanceTimers(currentTime) {
-  // Check for tasks that are no longer delayed and add them to the queue.
-  var timer = peek(timerQueue);
-
-  while (timer !== null) {
-    if (timer.callback === null) {
-      // Timer was cancelled.
-      pop(timerQueue);
-    } else if (timer.startTime <= currentTime) {
-      // Timer fired. Transfer to the task queue.
-      pop(timerQueue);
-      timer.sortIndex = timer.expirationTime;
-      push(taskQueue, timer);
-    } else {
-      // Remaining timers are pending.
-      return;
-    }
-
-    timer = peek(timerQueue);
-  }
-}
-
-function handleTimeout(currentTime) {
-  isHostTimeoutScheduled = false;
-  advanceTimers(currentTime);
-
-  if (!isHostCallbackScheduled) {
-    if (peek(taskQueue) !== null) {
-      isHostCallbackScheduled = true;
-      requestHostCallback(flushWork);
-    } else {
-      var firstTimer = peek(timerQueue);
-
-      if (firstTimer !== null) {
-        requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
-      }
-    }
-  }
-}
-
-function flushWork(hasTimeRemaining, initialTime) {
-
-
-  isHostCallbackScheduled = false;
-
-  if (isHostTimeoutScheduled) {
-    // We scheduled a timeout but it's no longer needed. Cancel it.
-    isHostTimeoutScheduled = false;
-    cancelHostTimeout();
-  }
-
-  isPerformingWork = true;
-  var previousPriorityLevel = currentPriorityLevel;
-
-  try {
-    if (enableProfiling) {
-      try {
-        return workLoop(hasTimeRemaining, initialTime);
-      } catch (error) {
-        if (currentTask !== null) {
-          var currentTime = getCurrentTime();
-          markTaskErrored(currentTask, currentTime);
-          currentTask.isQueued = false;
-        }
-
-        throw error;
-      }
-    } else {
-      // No catch in prod code path.
-      return workLoop(hasTimeRemaining, initialTime);
-    }
-  } finally {
-    currentTask = null;
-    currentPriorityLevel = previousPriorityLevel;
-    isPerformingWork = false;
-  }
-}
-
-function workLoop(hasTimeRemaining, initialTime) {
-  var currentTime = initialTime;
-  advanceTimers(currentTime);
-  currentTask = peek(taskQueue);
-
-  while (currentTask !== null && !(enableSchedulerDebugging )) {
-    if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost())) {
-      // This currentTask hasn't expired, and we've reached the deadline.
-      break;
-    }
-
-    var callback = currentTask.callback;
-
-    if (typeof callback === 'function') {
-      currentTask.callback = null;
-      currentPriorityLevel = currentTask.priorityLevel;
-      var didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
-
-      var continuationCallback = callback(didUserCallbackTimeout);
-      currentTime = getCurrentTime();
-
-      if (typeof continuationCallback === 'function') {
-        currentTask.callback = continuationCallback;
-      } else {
-
-        if (currentTask === peek(taskQueue)) {
-          pop(taskQueue);
-        }
-      }
-
-      advanceTimers(currentTime);
-    } else {
-      pop(taskQueue);
-    }
-
-    currentTask = peek(taskQueue);
-  } // Return whether there's additional work
-
-
-  if (currentTask !== null) {
-    return true;
-  } else {
-    var firstTimer = peek(timerQueue);
-
-    if (firstTimer !== null) {
-      requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
-    }
-
-    return false;
-  }
-}
-
-function unstable_runWithPriority(priorityLevel, eventHandler) {
-  switch (priorityLevel) {
-    case ImmediatePriority:
-    case UserBlockingPriority:
-    case NormalPriority:
-    case LowPriority:
-    case IdlePriority:
-      break;
-
-    default:
-      priorityLevel = NormalPriority;
-  }
-
-  var previousPriorityLevel = currentPriorityLevel;
-  currentPriorityLevel = priorityLevel;
-
-  try {
-    return eventHandler();
-  } finally {
-    currentPriorityLevel = previousPriorityLevel;
-  }
-}
-
-function unstable_next(eventHandler) {
-  var priorityLevel;
-
-  switch (currentPriorityLevel) {
-    case ImmediatePriority:
-    case UserBlockingPriority:
-    case NormalPriority:
-      // Shift down to normal priority
-      priorityLevel = NormalPriority;
-      break;
-
-    default:
-      // Anything lower than normal priority should remain at the current level.
-      priorityLevel = currentPriorityLevel;
-      break;
-  }
-
-  var previousPriorityLevel = currentPriorityLevel;
-  currentPriorityLevel = priorityLevel;
-
-  try {
-    return eventHandler();
-  } finally {
-    currentPriorityLevel = previousPriorityLevel;
-  }
-}
-
-function unstable_wrapCallback(callback) {
-  var parentPriorityLevel = currentPriorityLevel;
-  return function () {
-    // This is a fork of runWithPriority, inlined for performance.
-    var previousPriorityLevel = currentPriorityLevel;
-    currentPriorityLevel = parentPriorityLevel;
-
-    try {
-      return callback.apply(this, arguments);
-    } finally {
-      currentPriorityLevel = previousPriorityLevel;
-    }
-  };
-}
-
-function unstable_scheduleCallback(priorityLevel, callback, options) {
-  var currentTime = getCurrentTime();
-  var startTime;
-
-  if (typeof options === 'object' && options !== null) {
-    var delay = options.delay;
-
-    if (typeof delay === 'number' && delay > 0) {
-      startTime = currentTime + delay;
-    } else {
-      startTime = currentTime;
-    }
-  } else {
-    startTime = currentTime;
-  }
-
-  var timeout;
-
-  switch (priorityLevel) {
-    case ImmediatePriority:
-      timeout = IMMEDIATE_PRIORITY_TIMEOUT;
-      break;
-
-    case UserBlockingPriority:
-      timeout = USER_BLOCKING_PRIORITY_TIMEOUT;
-      break;
-
-    case IdlePriority:
-      timeout = IDLE_PRIORITY_TIMEOUT;
-      break;
-
-    case LowPriority:
-      timeout = LOW_PRIORITY_TIMEOUT;
-      break;
-
-    case NormalPriority:
-    default:
-      timeout = NORMAL_PRIORITY_TIMEOUT;
-      break;
-  }
-
-  var expirationTime = startTime + timeout;
-  var newTask = {
-    id: taskIdCounter++,
-    callback: callback,
-    priorityLevel: priorityLevel,
-    startTime: startTime,
-    expirationTime: expirationTime,
-    sortIndex: -1
-  };
-
-  if (startTime > currentTime) {
-    // This is a delayed task.
-    newTask.sortIndex = startTime;
-    push(timerQueue, newTask);
-
-    if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
-      // All tasks are delayed, and this is the task with the earliest delay.
-      if (isHostTimeoutScheduled) {
-        // Cancel an existing timeout.
-        cancelHostTimeout();
-      } else {
-        isHostTimeoutScheduled = true;
-      } // Schedule a timeout.
-
-
-      requestHostTimeout(handleTimeout, startTime - currentTime);
-    }
-  } else {
-    newTask.sortIndex = expirationTime;
-    push(taskQueue, newTask);
-    // wait until the next time we yield.
-
-
-    if (!isHostCallbackScheduled && !isPerformingWork) {
-      isHostCallbackScheduled = true;
-      requestHostCallback(flushWork);
-    }
-  }
-
-  return newTask;
-}
-
-function unstable_pauseExecution() {
-}
-
-function unstable_continueExecution() {
-
-  if (!isHostCallbackScheduled && !isPerformingWork) {
-    isHostCallbackScheduled = true;
-    requestHostCallback(flushWork);
-  }
-}
-
-function unstable_getFirstCallbackNode() {
-  return peek(taskQueue);
-}
-
-function unstable_cancelCallback(task) {
-  // remove from the queue because you can't remove arbitrary nodes from an
-  // array based heap, only the first one.)
-
-
-  task.callback = null;
-}
-
-function unstable_getCurrentPriorityLevel() {
-  return currentPriorityLevel;
-}
-
-function requestHostCallback(callback) {
-  scheduledCallback = callback;
-}
-
-function requestHostTimeout(callback, ms) {
-  scheduledTimeout = callback;
-  timeoutTime = currentMockTime + ms;
-}
-
-function cancelHostTimeout() {
-  scheduledTimeout = null;
-  timeoutTime = -1;
-}
-
-function shouldYieldToHost() {
-  if (expectedNumberOfYields !== -1 && yieldedValues !== null && yieldedValues.length >= expectedNumberOfYields || shouldYieldForPaint && needsPaint) {
-    // We yielded at least as many values as expected. Stop flushing.
-    didStop = true;
-    return true;
-  }
-
-  return false;
-}
-
-function getCurrentTime() {
-  return currentMockTime;
-}
-
-function forceFrameRate() {// No-op
-}
-
-function reset() {
-  if (isFlushing) {
-    throw new Error('Cannot reset while already flushing work.');
-  }
-
-  currentMockTime = 0;
-  scheduledCallback = null;
-  scheduledTimeout = null;
-  timeoutTime = -1;
-  yieldedValues = null;
-  expectedNumberOfYields = -1;
-  didStop = false;
-  isFlushing = false;
-  needsPaint = false;
-} // Should only be used via an assertion helper that inspects the yielded values.
-
-
-function unstable_flushNumberOfYields(count) {
-  if (isFlushing) {
-    throw new Error('Already flushing work.');
-  }
-
-  if (scheduledCallback !== null) {
-    var cb = scheduledCallback;
-    expectedNumberOfYields = count;
-    isFlushing = true;
-
-    try {
-      var hasMoreWork = true;
-
-      do {
-        hasMoreWork = cb(true, currentMockTime);
-      } while (hasMoreWork && !didStop);
-
-      if (!hasMoreWork) {
-        scheduledCallback = null;
-      }
-    } finally {
-      expectedNumberOfYields = -1;
-      didStop = false;
-      isFlushing = false;
-    }
-  }
-}
-
-function unstable_flushUntilNextPaint() {
-  if (isFlushing) {
-    throw new Error('Already flushing work.');
-  }
-
-  if (scheduledCallback !== null) {
-    var cb = scheduledCallback;
-    shouldYieldForPaint = true;
-    needsPaint = false;
-    isFlushing = true;
-
-    try {
-      var hasMoreWork = true;
-
-      do {
-        hasMoreWork = cb(true, currentMockTime);
-      } while (hasMoreWork && !didStop);
-
-      if (!hasMoreWork) {
-        scheduledCallback = null;
-      }
-    } finally {
-      shouldYieldForPaint = false;
-      didStop = false;
-      isFlushing = false;
-    }
-  }
-}
-
-function unstable_flushExpired() {
-  if (isFlushing) {
-    throw new Error('Already flushing work.');
-  }
-
-  if (scheduledCallback !== null) {
-    isFlushing = true;
-
-    try {
-      var hasMoreWork = scheduledCallback(false, currentMockTime);
-
-      if (!hasMoreWork) {
-        scheduledCallback = null;
-      }
-    } finally {
-      isFlushing = false;
-    }
-  }
-}
-
-function unstable_flushAllWithoutAsserting() {
-  // Returns false if no work was flushed.
-  if (isFlushing) {
-    throw new Error('Already flushing work.');
-  }
-
-  if (scheduledCallback !== null) {
-    var cb = scheduledCallback;
-    isFlushing = true;
-
-    try {
-      var hasMoreWork = true;
-
-      do {
-        hasMoreWork = cb(true, currentMockTime);
-      } while (hasMoreWork);
-
-      if (!hasMoreWork) {
-        scheduledCallback = null;
-      }
-
-      return true;
-    } finally {
-      isFlushing = false;
-    }
-  } else {
-    return false;
-  }
-}
-
-function unstable_clearYields() {
-  if (yieldedValues === null) {
-    return [];
-  }
-
-  var values = yieldedValues;
-  yieldedValues = null;
-  return values;
-}
-
-function unstable_flushAll() {
-  if (yieldedValues !== null) {
-    throw new Error('Log is not empty. Assert on the log of yielded values before ' + 'flushing additional work.');
-  }
-
-  unstable_flushAllWithoutAsserting();
-
-  if (yieldedValues !== null) {
-    throw new Error('While flushing work, something yielded a value. Use an ' + 'assertion helper to assert on the log of yielded values, e.g. ' + 'expect(Scheduler).toFlushAndYield([...])');
-  }
-}
-
-function unstable_yieldValue(value) {
-  // eslint-disable-next-line react-internal/no-production-logging
-  if (console.log.name === 'disabledLog') {
-    // If console.log has been patched, we assume we're in render
-    // replaying and we ignore any values yielding in the second pass.
-    return;
-  }
-
-  if (yieldedValues === null) {
-    yieldedValues = [value];
-  } else {
-    yieldedValues.push(value);
-  }
-}
-
-function unstable_advanceTime(ms) {
-  // eslint-disable-next-line react-internal/no-production-logging
-  if (console.log.name === 'disabledLog') {
-    // If console.log has been patched, we assume we're in render
-    // replaying and we ignore any time advancing in the second pass.
-    return;
-  }
-
-  currentMockTime += ms;
-
-  if (scheduledTimeout !== null && timeoutTime <= currentMockTime) {
-    scheduledTimeout(currentMockTime);
-    timeoutTime = -1;
-    scheduledTimeout = null;
-  }
-}
-
-function requestPaint() {
-  needsPaint = true;
-}
-var unstable_Profiling =  null;
-
-exports.reset = reset;
-exports.unstable_IdlePriority = IdlePriority;
-exports.unstable_ImmediatePriority = ImmediatePriority;
-exports.unstable_LowPriority = LowPriority;
-exports.unstable_NormalPriority = NormalPriority;
-exports.unstable_Profiling = unstable_Profiling;
-exports.unstable_UserBlockingPriority = UserBlockingPriority;
-exports.unstable_advanceTime = unstable_advanceTime;
-exports.unstable_cancelCallback = unstable_cancelCallback;
-exports.unstable_clearYields = unstable_clearYields;
-exports.unstable_continueExecution = unstable_continueExecution;
-exports.unstable_flushAll = unstable_flushAll;
-exports.unstable_flushAllWithoutAsserting = unstable_flushAllWithoutAsserting;
-exports.unstable_flushExpired = unstable_flushExpired;
-exports.unstable_flushNumberOfYields = unstable_flushNumberOfYields;
-exports.unstable_flushUntilNextPaint = unstable_flushUntilNextPaint;
-exports.unstable_forceFrameRate = forceFrameRate;
-exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
-exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
-exports.unstable_next = unstable_next;
-exports.unstable_now = getCurrentTime;
-exports.unstable_pauseExecution = unstable_pauseExecution;
-exports.unstable_requestPaint = requestPaint;
-exports.unstable_runWithPriority = unstable_runWithPriority;
-exports.unstable_scheduleCallback = unstable_scheduleCallback;
-exports.unstable_shouldYield = shouldYieldToHost;
-exports.unstable_wrapCallback = unstable_wrapCallback;
-exports.unstable_yieldValue = unstable_yieldValue;
-  })();
-}
diff --git a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_mock.production.min.js b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_mock.production.min.js
deleted file mode 100644
index 8f441705bf496..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_mock.production.min.js
+++ /dev/null
@@ -1,19 +0,0 @@
-/** @license React vundefined
- * scheduler-unstable_mock.production.min.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-'use strict';function f(a,b){var c=a.length;a.push(b);a:for(;;){var d=c-1>>>1,e=a[d];if(void 0!==e&&0<g(e,b))a[d]=b,a[c]=e,c=d;else break a}}function h(a){a=a[0];return void 0===a?null:a}function k(a){var b=a[0];if(void 0!==b){var c=a.pop();if(c!==b){a[0]=c;a:for(var d=0,e=a.length;d<e;){var u=2*(d+1)-1,v=a[u],w=u+1,y=a[w];if(void 0!==v&&0>g(v,c))void 0!==y&&0>g(y,v)?(a[d]=y,a[w]=c,d=w):(a[d]=v,a[u]=c,d=u);else if(void 0!==y&&0>g(y,c))a[d]=y,a[w]=c,d=w;else break a}}return b}return null}
-function g(a,b){var c=a.sortIndex-b.sortIndex;return 0!==c?c:a.id-b.id}var l=[],m=[],n=1,p=null,q=3,r=!1,t=!1,x=!1,z=0,A=null,B=null,C=-1,D=null,E=-1,F=!1,G=!1,H=!1,I=!1;function J(a){for(var b=h(m);null!==b;){if(null===b.callback)k(m);else if(b.startTime<=a)k(m),b.sortIndex=b.expirationTime,f(l,b);else break;b=h(m)}}function K(a){x=!1;J(a);if(!t)if(null!==h(l))t=!0,A=L;else{var b=h(m);null!==b&&(a=b.startTime-a,B=K,C=z+a)}}
-function L(a,b){t=!1;x&&(x=!1,B=null,C=-1);r=!0;var c=q;try{J(b);for(p=h(l);null!==p&&(!(p.expirationTime>b)||a&&!M());){var d=p.callback;if("function"===typeof d){p.callback=null;q=p.priorityLevel;var e=d(p.expirationTime<=b);b=z;"function"===typeof e?p.callback=e:p===h(l)&&k(l);J(b)}else k(l);p=h(l)}if(null!==p)var u=!0;else{var v=h(m);if(null!==v){var w=v.startTime-b;B=K;C=z+w}u=!1}return u}finally{p=null,q=c,r=!1}}function M(){return-1!==E&&null!==D&&D.length>=E||I&&H?F=!0:!1}
-function N(){if(G)throw Error("Already flushing work.");if(null!==A){var a=A;G=!0;try{var b=!0;do b=a(!0,z);while(b);b||(A=null);return!0}finally{G=!1}}else return!1}exports.reset=function(){if(G)throw Error("Cannot reset while already flushing work.");z=0;B=A=null;C=-1;D=null;E=-1;H=G=F=!1};exports.unstable_IdlePriority=5;exports.unstable_ImmediatePriority=1;exports.unstable_LowPriority=4;exports.unstable_NormalPriority=3;exports.unstable_Profiling=null;exports.unstable_UserBlockingPriority=2;
-exports.unstable_advanceTime=function(a){"disabledLog"!==console.log.name&&(z+=a,null!==B&&C<=z&&(B(z),C=-1,B=null))};exports.unstable_cancelCallback=function(a){a.callback=null};exports.unstable_clearYields=function(){if(null===D)return[];var a=D;D=null;return a};exports.unstable_continueExecution=function(){t||r||(t=!0,A=L)};
-exports.unstable_flushAll=function(){if(null!==D)throw Error("Log is not empty. Assert on the log of yielded values before flushing additional work.");N();if(null!==D)throw Error("While flushing work, something yielded a value. Use an assertion helper to assert on the log of yielded values, e.g. expect(Scheduler).toFlushAndYield([...])");};exports.unstable_flushAllWithoutAsserting=N;
-exports.unstable_flushExpired=function(){if(G)throw Error("Already flushing work.");if(null!==A){G=!0;try{A(!1,z)||(A=null)}finally{G=!1}}};exports.unstable_flushNumberOfYields=function(a){if(G)throw Error("Already flushing work.");if(null!==A){var b=A;E=a;G=!0;try{a=!0;do a=b(!0,z);while(a&&!F);a||(A=null)}finally{E=-1,G=F=!1}}};
-exports.unstable_flushUntilNextPaint=function(){if(G)throw Error("Already flushing work.");if(null!==A){var a=A;I=!0;H=!1;G=!0;try{var b=!0;do b=a(!0,z);while(b&&!F);b||(A=null)}finally{G=F=I=!1}}};exports.unstable_forceFrameRate=function(){};exports.unstable_getCurrentPriorityLevel=function(){return q};exports.unstable_getFirstCallbackNode=function(){return h(l)};exports.unstable_next=function(a){switch(q){case 1:case 2:case 3:var b=3;break;default:b=q}var c=q;q=b;try{return a()}finally{q=c}};
-exports.unstable_now=function(){return z};exports.unstable_pauseExecution=function(){};exports.unstable_requestPaint=function(){H=!0};exports.unstable_runWithPriority=function(a,b){switch(a){case 1:case 2:case 3:case 4:case 5:break;default:a=3}var c=q;q=a;try{return b()}finally{q=c}};
-exports.unstable_scheduleCallback=function(a,b,c){var d=z;"object"===typeof c&&null!==c?(c=c.delay,c="number"===typeof c&&0<c?d+c:d):c=d;switch(a){case 1:var e=-1;break;case 2:e=250;break;case 5:e=1073741823;break;case 4:e=1E4;break;default:e=5E3}e=c+e;a={id:n++,callback:b,priorityLevel:a,startTime:c,expirationTime:e,sortIndex:-1};c>d?(a.sortIndex=c,f(m,a),null===h(l)&&a===h(m)&&(x?(B=null,C=-1):x=!0,B=K,C=z+(c-d))):(a.sortIndex=e,f(l,a),t||r||(t=!0,A=L));return a};exports.unstable_shouldYield=M;
-exports.unstable_wrapCallback=function(a){var b=q;return function(){var c=q;q=b;try{return a.apply(this,arguments)}finally{q=c}}};exports.unstable_yieldValue=function(a){"disabledLog"!==console.log.name&&(null===D?D=[a]:D.push(a))};
diff --git a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_post_task.development.js b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_post_task.development.js
deleted file mode 100644
index 669db876d6a16..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_post_task.development.js
+++ /dev/null
@@ -1,206 +0,0 @@
-/** @license React vundefined
- * scheduler-unstable_post_task.development.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-'use strict';
-
-if (process.env.NODE_ENV !== "production") {
-  (function() {
-'use strict';
-
-// TODO: Use symbols?
-var ImmediatePriority = 1;
-var UserBlockingPriority = 2;
-var NormalPriority = 3;
-var LowPriority = 4;
-var IdlePriority = 5;
-
-var perf = window.performance;
-var setTimeout = window.setTimeout; // Use experimental Chrome Scheduler postTask API.
-
-var scheduler = global.scheduler;
-var getCurrentTime = perf.now.bind(perf);
-var unstable_now = getCurrentTime; // Scheduler periodically yields in case there is other work on the main
-// thread, like user events. By default, it yields multiple times per frame.
-// It does not attempt to align with frame boundaries, since most tasks don't
-// need to be frame aligned; for those that do, use requestAnimationFrame.
-
-var yieldInterval = 5;
-var deadline = 0;
-var currentPriorityLevel_DEPRECATED = NormalPriority; // `isInputPending` is not available. Since we have no way of knowing if
-// there's pending input, always yield at the end of the frame.
-
-function unstable_shouldYield() {
-  return getCurrentTime() >= deadline;
-}
-function unstable_requestPaint() {// Since we yield every frame regardless, `requestPaint` has no effect.
-}
-function unstable_scheduleCallback(priorityLevel, callback, options) {
-  var postTaskPriority;
-
-  switch (priorityLevel) {
-    case ImmediatePriority:
-    case UserBlockingPriority:
-      postTaskPriority = 'user-blocking';
-      break;
-
-    case LowPriority:
-    case NormalPriority:
-      postTaskPriority = 'user-visible';
-      break;
-
-    case IdlePriority:
-      postTaskPriority = 'background';
-      break;
-
-    default:
-      postTaskPriority = 'user-visible';
-      break;
-  }
-
-  var controller = new TaskController();
-  var postTaskOptions = {
-    priority: postTaskPriority,
-    delay: typeof options === 'object' && options !== null ? options.delay : 0,
-    signal: controller.signal
-  };
-  var node = {
-    _controller: controller
-  };
-  scheduler.postTask(runTask.bind(null, priorityLevel, postTaskPriority, node, callback), postTaskOptions).catch(handleAbortError);
-  return node;
-}
-
-function runTask(priorityLevel, postTaskPriority, node, callback) {
-  deadline = getCurrentTime() + yieldInterval;
-
-  try {
-    currentPriorityLevel_DEPRECATED = priorityLevel;
-    var _didTimeout_DEPRECATED = false;
-    var result = callback(_didTimeout_DEPRECATED);
-
-    if (typeof result === 'function') {
-      // Assume this is a continuation
-      var continuation = result;
-      var continuationController = new TaskController();
-      var continuationOptions = {
-        priority: postTaskPriority,
-        signal: continuationController.signal
-      }; // Update the original callback node's controller, since even though we're
-      // posting a new task, conceptually it's the same one.
-
-      node._controller = continuationController;
-      scheduler.postTask(runTask.bind(null, priorityLevel, postTaskPriority, node, continuation), continuationOptions).catch(handleAbortError);
-    }
-  } catch (error) {
-    // We're inside a `postTask` promise. If we don't handle this error, then it
-    // will trigger an "Unhandled promise rejection" error. We don't want that,
-    // but we do want the default error reporting behavior that normal
-    // (non-Promise) tasks get for unhandled errors.
-    //
-    // So we'll re-throw the error inside a regular browser task.
-    setTimeout(function () {
-      throw error;
-    });
-  } finally {
-    currentPriorityLevel_DEPRECATED = NormalPriority;
-  }
-}
-
-function handleAbortError(error) {// Abort errors are an implementation detail. We don't expose the
-  // TaskController to the user, nor do we expose the promise that is returned
-  // from `postTask`. So we should suppress them, since there's no way for the
-  // user to handle them.
-}
-
-function unstable_cancelCallback(node) {
-  var controller = node._controller;
-  controller.abort();
-}
-function unstable_runWithPriority(priorityLevel, callback) {
-  var previousPriorityLevel = currentPriorityLevel_DEPRECATED;
-  currentPriorityLevel_DEPRECATED = priorityLevel;
-
-  try {
-    return callback();
-  } finally {
-    currentPriorityLevel_DEPRECATED = previousPriorityLevel;
-  }
-}
-function unstable_getCurrentPriorityLevel() {
-  return currentPriorityLevel_DEPRECATED;
-}
-function unstable_next(callback) {
-  var priorityLevel;
-
-  switch (currentPriorityLevel_DEPRECATED) {
-    case ImmediatePriority:
-    case UserBlockingPriority:
-    case NormalPriority:
-      // Shift down to normal priority
-      priorityLevel = NormalPriority;
-      break;
-
-    default:
-      // Anything lower than normal priority should remain at the current level.
-      priorityLevel = currentPriorityLevel_DEPRECATED;
-      break;
-  }
-
-  var previousPriorityLevel = currentPriorityLevel_DEPRECATED;
-  currentPriorityLevel_DEPRECATED = priorityLevel;
-
-  try {
-    return callback();
-  } finally {
-    currentPriorityLevel_DEPRECATED = previousPriorityLevel;
-  }
-}
-function unstable_wrapCallback(callback) {
-  var parentPriorityLevel = currentPriorityLevel_DEPRECATED;
-  return function () {
-    var previousPriorityLevel = currentPriorityLevel_DEPRECATED;
-    currentPriorityLevel_DEPRECATED = parentPriorityLevel;
-
-    try {
-      return callback();
-    } finally {
-      currentPriorityLevel_DEPRECATED = previousPriorityLevel;
-    }
-  };
-}
-function unstable_forceFrameRate() {}
-function unstable_pauseExecution() {}
-function unstable_continueExecution() {}
-function unstable_getFirstCallbackNode() {
-  return null;
-} // Currently no profiling build
-
-var unstable_Profiling = null;
-
-exports.unstable_IdlePriority = IdlePriority;
-exports.unstable_ImmediatePriority = ImmediatePriority;
-exports.unstable_LowPriority = LowPriority;
-exports.unstable_NormalPriority = NormalPriority;
-exports.unstable_Profiling = unstable_Profiling;
-exports.unstable_UserBlockingPriority = UserBlockingPriority;
-exports.unstable_cancelCallback = unstable_cancelCallback;
-exports.unstable_continueExecution = unstable_continueExecution;
-exports.unstable_forceFrameRate = unstable_forceFrameRate;
-exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
-exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
-exports.unstable_next = unstable_next;
-exports.unstable_now = unstable_now;
-exports.unstable_pauseExecution = unstable_pauseExecution;
-exports.unstable_requestPaint = unstable_requestPaint;
-exports.unstable_runWithPriority = unstable_runWithPriority;
-exports.unstable_scheduleCallback = unstable_scheduleCallback;
-exports.unstable_shouldYield = unstable_shouldYield;
-exports.unstable_wrapCallback = unstable_wrapCallback;
-  })();
-}
diff --git a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_post_task.production.min.js b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_post_task.production.min.js
deleted file mode 100644
index 3e12bdb66fd89..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler-unstable_post_task.production.min.js
+++ /dev/null
@@ -1,13 +0,0 @@
-/** @license React vundefined
- * scheduler-unstable_post_task.production.min.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-'use strict';var a=window.performance,g=window.setTimeout,h=global.scheduler,k=a.now.bind(a),l=0,m=3;function p(c,d,b,f){l=k()+5;try{m=c;var e=f(!1);if("function"===typeof e){var n=new TaskController,r={priority:d,signal:n.signal};b._controller=n;h.postTask(p.bind(null,c,d,b,e),r).catch(q)}}catch(t){g(function(){throw t;})}finally{m=3}}function q(){}exports.unstable_IdlePriority=5;exports.unstable_ImmediatePriority=1;exports.unstable_LowPriority=4;exports.unstable_NormalPriority=3;
-exports.unstable_Profiling=null;exports.unstable_UserBlockingPriority=2;exports.unstable_cancelCallback=function(c){c._controller.abort()};exports.unstable_continueExecution=function(){};exports.unstable_forceFrameRate=function(){};exports.unstable_getCurrentPriorityLevel=function(){return m};exports.unstable_getFirstCallbackNode=function(){return null};exports.unstable_next=function(c){switch(m){case 1:case 2:case 3:var d=3;break;default:d=m}var b=m;m=d;try{return c()}finally{m=b}};
-exports.unstable_now=k;exports.unstable_pauseExecution=function(){};exports.unstable_requestPaint=function(){};exports.unstable_runWithPriority=function(c,d){var b=m;m=c;try{return d()}finally{m=b}};
-exports.unstable_scheduleCallback=function(c,d,b){switch(c){case 1:case 2:var f="user-blocking";break;case 4:case 3:f="user-visible";break;case 5:f="background";break;default:f="user-visible"}var e=new TaskController;b={priority:f,delay:"object"===typeof b&&null!==b?b.delay:0,signal:e.signal};e={_controller:e};h.postTask(p.bind(null,c,f,e,d),b).catch(q);return e};exports.unstable_shouldYield=function(){return k()>=l};
-exports.unstable_wrapCallback=function(c){var d=m;return function(){var b=m;m=d;try{return c()}finally{m=b}}};
diff --git a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler.development.js b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler.development.js
deleted file mode 100644
index 8d928368e853d..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler.development.js
+++ /dev/null
@@ -1,609 +0,0 @@
-/** @license React vundefined
- * scheduler.development.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-'use strict';
-
-if (process.env.NODE_ENV !== "production") {
-  (function() {
-'use strict';
-
-var enableSchedulerDebugging = false;
-var enableProfiling = false;
-
-function push(heap, node) {
-  var index = heap.length;
-  heap.push(node);
-  siftUp(heap, node, index);
-}
-function peek(heap) {
-  var first = heap[0];
-  return first === undefined ? null : first;
-}
-function pop(heap) {
-  var first = heap[0];
-
-  if (first !== undefined) {
-    var last = heap.pop();
-
-    if (last !== first) {
-      heap[0] = last;
-      siftDown(heap, last, 0);
-    }
-
-    return first;
-  } else {
-    return null;
-  }
-}
-
-function siftUp(heap, node, i) {
-  var index = i;
-
-  while (true) {
-    var parentIndex = index - 1 >>> 1;
-    var parent = heap[parentIndex];
-
-    if (parent !== undefined && compare(parent, node) > 0) {
-      // The parent is larger. Swap positions.
-      heap[parentIndex] = node;
-      heap[index] = parent;
-      index = parentIndex;
-    } else {
-      // The parent is smaller. Exit.
-      return;
-    }
-  }
-}
-
-function siftDown(heap, node, i) {
-  var index = i;
-  var length = heap.length;
-
-  while (index < length) {
-    var leftIndex = (index + 1) * 2 - 1;
-    var left = heap[leftIndex];
-    var rightIndex = leftIndex + 1;
-    var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those.
-
-    if (left !== undefined && compare(left, node) < 0) {
-      if (right !== undefined && compare(right, left) < 0) {
-        heap[index] = right;
-        heap[rightIndex] = node;
-        index = rightIndex;
-      } else {
-        heap[index] = left;
-        heap[leftIndex] = node;
-        index = leftIndex;
-      }
-    } else if (right !== undefined && compare(right, node) < 0) {
-      heap[index] = right;
-      heap[rightIndex] = node;
-      index = rightIndex;
-    } else {
-      // Neither child is smaller. Exit.
-      return;
-    }
-  }
-}
-
-function compare(a, b) {
-  // Compare sort index first, then task id.
-  var diff = a.sortIndex - b.sortIndex;
-  return diff !== 0 ? diff : a.id - b.id;
-}
-
-// TODO: Use symbols?
-var ImmediatePriority = 1;
-var UserBlockingPriority = 2;
-var NormalPriority = 3;
-var LowPriority = 4;
-var IdlePriority = 5;
-
-function markTaskErrored(task, ms) {
-}
-
-/* eslint-disable no-var */
-
-var hasPerformanceNow = typeof performance === 'object' && typeof performance.now === 'function';
-
-if (hasPerformanceNow) {
-  var localPerformance = performance;
-
-  exports.unstable_now = function () {
-    return localPerformance.now();
-  };
-} else {
-  var localDate = Date;
-  var initialTime = localDate.now();
-
-  exports.unstable_now = function () {
-    return localDate.now() - initialTime;
-  };
-} // Max 31 bit integer. The max integer size in V8 for 32-bit systems.
-// Math.pow(2, 30) - 1
-// 0b111111111111111111111111111111
-
-
-var maxSigned31BitInt = 1073741823; // Times out immediately
-
-var IMMEDIATE_PRIORITY_TIMEOUT = -1; // Eventually times out
-
-var USER_BLOCKING_PRIORITY_TIMEOUT = 250;
-var NORMAL_PRIORITY_TIMEOUT = 5000;
-var LOW_PRIORITY_TIMEOUT = 10000; // Never times out
-
-var IDLE_PRIORITY_TIMEOUT = maxSigned31BitInt; // Tasks are stored on a min heap
-
-var taskQueue = [];
-var timerQueue = []; // Incrementing id counter. Used to maintain insertion order.
-
-var taskIdCounter = 1; // Pausing the scheduler is useful for debugging.
-var currentTask = null;
-var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrancy.
-
-var isPerformingWork = false;
-var isHostCallbackScheduled = false;
-var isHostTimeoutScheduled = false; // Capture local references to native APIs, in case a polyfill overrides them.
-
-var localSetTimeout = typeof setTimeout === 'function' ? setTimeout : null;
-var localClearTimeout = typeof clearTimeout === 'function' ? clearTimeout : null;
-var localSetImmediate = typeof setImmediate !== 'undefined' ? setImmediate : null; // IE and Node.js + jsdom
-
-function advanceTimers(currentTime) {
-  // Check for tasks that are no longer delayed and add them to the queue.
-  var timer = peek(timerQueue);
-
-  while (timer !== null) {
-    if (timer.callback === null) {
-      // Timer was cancelled.
-      pop(timerQueue);
-    } else if (timer.startTime <= currentTime) {
-      // Timer fired. Transfer to the task queue.
-      pop(timerQueue);
-      timer.sortIndex = timer.expirationTime;
-      push(taskQueue, timer);
-    } else {
-      // Remaining timers are pending.
-      return;
-    }
-
-    timer = peek(timerQueue);
-  }
-}
-
-function handleTimeout(currentTime) {
-  isHostTimeoutScheduled = false;
-  advanceTimers(currentTime);
-
-  if (!isHostCallbackScheduled) {
-    if (peek(taskQueue) !== null) {
-      isHostCallbackScheduled = true;
-      requestHostCallback(flushWork);
-    } else {
-      var firstTimer = peek(timerQueue);
-
-      if (firstTimer !== null) {
-        requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
-      }
-    }
-  }
-}
-
-function flushWork(hasTimeRemaining, initialTime) {
-
-
-  isHostCallbackScheduled = false;
-
-  if (isHostTimeoutScheduled) {
-    // We scheduled a timeout but it's no longer needed. Cancel it.
-    isHostTimeoutScheduled = false;
-    cancelHostTimeout();
-  }
-
-  isPerformingWork = true;
-  var previousPriorityLevel = currentPriorityLevel;
-
-  try {
-    if (enableProfiling) {
-      try {
-        return workLoop(hasTimeRemaining, initialTime);
-      } catch (error) {
-        if (currentTask !== null) {
-          var currentTime = exports.unstable_now();
-          markTaskErrored(currentTask, currentTime);
-          currentTask.isQueued = false;
-        }
-
-        throw error;
-      }
-    } else {
-      // No catch in prod code path.
-      return workLoop(hasTimeRemaining, initialTime);
-    }
-  } finally {
-    currentTask = null;
-    currentPriorityLevel = previousPriorityLevel;
-    isPerformingWork = false;
-  }
-}
-
-function workLoop(hasTimeRemaining, initialTime) {
-  var currentTime = initialTime;
-  advanceTimers(currentTime);
-  currentTask = peek(taskQueue);
-
-  while (currentTask !== null && !(enableSchedulerDebugging )) {
-    if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost())) {
-      // This currentTask hasn't expired, and we've reached the deadline.
-      break;
-    }
-
-    var callback = currentTask.callback;
-
-    if (typeof callback === 'function') {
-      currentTask.callback = null;
-      currentPriorityLevel = currentTask.priorityLevel;
-      var didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
-
-      var continuationCallback = callback(didUserCallbackTimeout);
-      currentTime = exports.unstable_now();
-
-      if (typeof continuationCallback === 'function') {
-        currentTask.callback = continuationCallback;
-      } else {
-
-        if (currentTask === peek(taskQueue)) {
-          pop(taskQueue);
-        }
-      }
-
-      advanceTimers(currentTime);
-    } else {
-      pop(taskQueue);
-    }
-
-    currentTask = peek(taskQueue);
-  } // Return whether there's additional work
-
-
-  if (currentTask !== null) {
-    return true;
-  } else {
-    var firstTimer = peek(timerQueue);
-
-    if (firstTimer !== null) {
-      requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
-    }
-
-    return false;
-  }
-}
-
-function unstable_runWithPriority(priorityLevel, eventHandler) {
-  switch (priorityLevel) {
-    case ImmediatePriority:
-    case UserBlockingPriority:
-    case NormalPriority:
-    case LowPriority:
-    case IdlePriority:
-      break;
-
-    default:
-      priorityLevel = NormalPriority;
-  }
-
-  var previousPriorityLevel = currentPriorityLevel;
-  currentPriorityLevel = priorityLevel;
-
-  try {
-    return eventHandler();
-  } finally {
-    currentPriorityLevel = previousPriorityLevel;
-  }
-}
-
-function unstable_next(eventHandler) {
-  var priorityLevel;
-
-  switch (currentPriorityLevel) {
-    case ImmediatePriority:
-    case UserBlockingPriority:
-    case NormalPriority:
-      // Shift down to normal priority
-      priorityLevel = NormalPriority;
-      break;
-
-    default:
-      // Anything lower than normal priority should remain at the current level.
-      priorityLevel = currentPriorityLevel;
-      break;
-  }
-
-  var previousPriorityLevel = currentPriorityLevel;
-  currentPriorityLevel = priorityLevel;
-
-  try {
-    return eventHandler();
-  } finally {
-    currentPriorityLevel = previousPriorityLevel;
-  }
-}
-
-function unstable_wrapCallback(callback) {
-  var parentPriorityLevel = currentPriorityLevel;
-  return function () {
-    // This is a fork of runWithPriority, inlined for performance.
-    var previousPriorityLevel = currentPriorityLevel;
-    currentPriorityLevel = parentPriorityLevel;
-
-    try {
-      return callback.apply(this, arguments);
-    } finally {
-      currentPriorityLevel = previousPriorityLevel;
-    }
-  };
-}
-
-function unstable_scheduleCallback(priorityLevel, callback, options) {
-  var currentTime = exports.unstable_now();
-  var startTime;
-
-  if (typeof options === 'object' && options !== null) {
-    var delay = options.delay;
-
-    if (typeof delay === 'number' && delay > 0) {
-      startTime = currentTime + delay;
-    } else {
-      startTime = currentTime;
-    }
-  } else {
-    startTime = currentTime;
-  }
-
-  var timeout;
-
-  switch (priorityLevel) {
-    case ImmediatePriority:
-      timeout = IMMEDIATE_PRIORITY_TIMEOUT;
-      break;
-
-    case UserBlockingPriority:
-      timeout = USER_BLOCKING_PRIORITY_TIMEOUT;
-      break;
-
-    case IdlePriority:
-      timeout = IDLE_PRIORITY_TIMEOUT;
-      break;
-
-    case LowPriority:
-      timeout = LOW_PRIORITY_TIMEOUT;
-      break;
-
-    case NormalPriority:
-    default:
-      timeout = NORMAL_PRIORITY_TIMEOUT;
-      break;
-  }
-
-  var expirationTime = startTime + timeout;
-  var newTask = {
-    id: taskIdCounter++,
-    callback: callback,
-    priorityLevel: priorityLevel,
-    startTime: startTime,
-    expirationTime: expirationTime,
-    sortIndex: -1
-  };
-
-  if (startTime > currentTime) {
-    // This is a delayed task.
-    newTask.sortIndex = startTime;
-    push(timerQueue, newTask);
-
-    if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
-      // All tasks are delayed, and this is the task with the earliest delay.
-      if (isHostTimeoutScheduled) {
-        // Cancel an existing timeout.
-        cancelHostTimeout();
-      } else {
-        isHostTimeoutScheduled = true;
-      } // Schedule a timeout.
-
-
-      requestHostTimeout(handleTimeout, startTime - currentTime);
-    }
-  } else {
-    newTask.sortIndex = expirationTime;
-    push(taskQueue, newTask);
-    // wait until the next time we yield.
-
-
-    if (!isHostCallbackScheduled && !isPerformingWork) {
-      isHostCallbackScheduled = true;
-      requestHostCallback(flushWork);
-    }
-  }
-
-  return newTask;
-}
-
-function unstable_pauseExecution() {
-}
-
-function unstable_continueExecution() {
-
-  if (!isHostCallbackScheduled && !isPerformingWork) {
-    isHostCallbackScheduled = true;
-    requestHostCallback(flushWork);
-  }
-}
-
-function unstable_getFirstCallbackNode() {
-  return peek(taskQueue);
-}
-
-function unstable_cancelCallback(task) {
-  // remove from the queue because you can't remove arbitrary nodes from an
-  // array based heap, only the first one.)
-
-
-  task.callback = null;
-}
-
-function unstable_getCurrentPriorityLevel() {
-  return currentPriorityLevel;
-}
-
-var isMessageLoopRunning = false;
-var scheduledHostCallback = null;
-var taskTimeoutID = -1; // Scheduler periodically yields in case there is other work on the main
-// thread, like user events. By default, it yields multiple times per frame.
-// It does not attempt to align with frame boundaries, since most tasks don't
-// need to be frame aligned; for those that do, use requestAnimationFrame.
-
-var yieldInterval = 5;
-var deadline = 0; // TODO: Make this configurable
-
-function shouldYieldToHost() {
-  {
-    // `isInputPending` is not available. Since we have no way of knowing if
-    // there's pending input, always yield at the end of the frame.
-    return exports.unstable_now() >= deadline;
-  }
-}
-
-function requestPaint() {
-
-}
-
-function forceFrameRate(fps) {
-  if (fps < 0 || fps > 125) {
-    // Using console['error'] to evade Babel and ESLint
-    console['error']('forceFrameRate takes a positive int between 0 and 125, ' + 'forcing frame rates higher than 125 fps is not supported');
-    return;
-  }
-
-  if (fps > 0) {
-    yieldInterval = Math.floor(1000 / fps);
-  } else {
-    // reset the framerate
-    yieldInterval = 5;
-  }
-}
-
-var performWorkUntilDeadline = function () {
-  if (scheduledHostCallback !== null) {
-    var currentTime = exports.unstable_now(); // Yield after `yieldInterval` ms, regardless of where we are in the vsync
-    // cycle. This means there's always time remaining at the beginning of
-    // the message event.
-
-    deadline = currentTime + yieldInterval;
-    var hasTimeRemaining = true; // If a scheduler task throws, exit the current browser task so the
-    // error can be observed.
-    //
-    // Intentionally not using a try-catch, since that makes some debugging
-    // techniques harder. Instead, if `scheduledHostCallback` errors, then
-    // `hasMoreWork` will remain true, and we'll continue the work loop.
-
-    var hasMoreWork = true;
-
-    try {
-      hasMoreWork = scheduledHostCallback(hasTimeRemaining, currentTime);
-    } finally {
-      if (hasMoreWork) {
-        // If there's more work, schedule the next message event at the end
-        // of the preceding one.
-        schedulePerformWorkUntilDeadline();
-      } else {
-        isMessageLoopRunning = false;
-        scheduledHostCallback = null;
-      }
-    }
-  } else {
-    isMessageLoopRunning = false;
-  } // Yielding to the browser will give it a chance to paint, so we can
-};
-
-var schedulePerformWorkUntilDeadline;
-
-if (typeof localSetImmediate === 'function') {
-  // Node.js and old IE.
-  // There's a few reasons for why we prefer setImmediate.
-  //
-  // Unlike MessageChannel, it doesn't prevent a Node.js process from exiting.
-  // (Even though this is a DOM fork of the Scheduler, you could get here
-  // with a mix of Node.js 15+, which has a MessageChannel, and jsdom.)
-  // https://github.com/facebook/react/issues/20756
-  //
-  // But also, it runs earlier which is the semantic we want.
-  // If other browsers ever implement it, it's better to use it.
-  // Although both of these would be inferior to native scheduling.
-  schedulePerformWorkUntilDeadline = function () {
-    localSetImmediate(performWorkUntilDeadline);
-  };
-} else if (typeof MessageChannel !== 'undefined') {
-  // DOM and Worker environments.
-  // We prefer MessageChannel because of the 4ms setTimeout clamping.
-  var channel = new MessageChannel();
-  var port = channel.port2;
-  channel.port1.onmessage = performWorkUntilDeadline;
-
-  schedulePerformWorkUntilDeadline = function () {
-    port.postMessage(null);
-  };
-} else {
-  // We should only fallback here in non-browser environments.
-  schedulePerformWorkUntilDeadline = function () {
-    localSetTimeout(performWorkUntilDeadline, 0);
-  };
-}
-
-function requestHostCallback(callback) {
-  scheduledHostCallback = callback;
-
-  if (!isMessageLoopRunning) {
-    isMessageLoopRunning = true;
-    schedulePerformWorkUntilDeadline();
-  }
-}
-
-function requestHostTimeout(callback, ms) {
-  taskTimeoutID = localSetTimeout(function () {
-    callback(exports.unstable_now());
-  }, ms);
-}
-
-function cancelHostTimeout() {
-  localClearTimeout(taskTimeoutID);
-  taskTimeoutID = -1;
-}
-
-var unstable_requestPaint = requestPaint;
-var unstable_Profiling =  null;
-
-exports.unstable_IdlePriority = IdlePriority;
-exports.unstable_ImmediatePriority = ImmediatePriority;
-exports.unstable_LowPriority = LowPriority;
-exports.unstable_NormalPriority = NormalPriority;
-exports.unstable_Profiling = unstable_Profiling;
-exports.unstable_UserBlockingPriority = UserBlockingPriority;
-exports.unstable_cancelCallback = unstable_cancelCallback;
-exports.unstable_continueExecution = unstable_continueExecution;
-exports.unstable_forceFrameRate = forceFrameRate;
-exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
-exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
-exports.unstable_next = unstable_next;
-exports.unstable_pauseExecution = unstable_pauseExecution;
-exports.unstable_requestPaint = unstable_requestPaint;
-exports.unstable_runWithPriority = unstable_runWithPriority;
-exports.unstable_scheduleCallback = unstable_scheduleCallback;
-exports.unstable_shouldYield = shouldYieldToHost;
-exports.unstable_wrapCallback = unstable_wrapCallback;
-  })();
-}
diff --git a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler.production.min.js b/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler.production.min.js
deleted file mode 100644
index b66f89ca7f943..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/cjs/scheduler.production.min.js
+++ /dev/null
@@ -1,18 +0,0 @@
-/** @license React vundefined
- * scheduler.production.min.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-'use strict';function f(a,b){var c=a.length;a.push(b);a:for(;;){var d=c-1>>>1,e=a[d];if(void 0!==e&&0<g(e,b))a[d]=b,a[c]=e,c=d;else break a}}function h(a){a=a[0];return void 0===a?null:a}function k(a){var b=a[0];if(void 0!==b){var c=a.pop();if(c!==b){a[0]=c;a:for(var d=0,e=a.length;d<e;){var m=2*(d+1)-1,n=a[m],r=m+1,q=a[r];if(void 0!==n&&0>g(n,c))void 0!==q&&0>g(q,n)?(a[d]=q,a[r]=c,d=r):(a[d]=n,a[m]=c,d=m);else if(void 0!==q&&0>g(q,c))a[d]=q,a[r]=c,d=r;else break a}}return b}return null}
-function g(a,b){var c=a.sortIndex-b.sortIndex;return 0!==c?c:a.id-b.id}if("object"===typeof performance&&"function"===typeof performance.now){var l=performance;exports.unstable_now=function(){return l.now()}}else{var p=Date,t=p.now();exports.unstable_now=function(){return p.now()-t}}var u=[],v=[],w=1,x=null,y=3,z=!1,A=!1,B=!1,C="function"===typeof setTimeout?setTimeout:null,D="function"===typeof clearTimeout?clearTimeout:null,E="undefined"!==typeof setImmediate?setImmediate:null;
-function F(a){for(var b=h(v);null!==b;){if(null===b.callback)k(v);else if(b.startTime<=a)k(v),b.sortIndex=b.expirationTime,f(u,b);else break;b=h(v)}}function G(a){B=!1;F(a);if(!A)if(null!==h(u))A=!0,H(I);else{var b=h(v);null!==b&&J(G,b.startTime-a)}}
-function I(a,b){A=!1;B&&(B=!1,D(K),K=-1);z=!0;var c=y;try{F(b);for(x=h(u);null!==x&&(!(x.expirationTime>b)||a&&!L());){var d=x.callback;if("function"===typeof d){x.callback=null;y=x.priorityLevel;var e=d(x.expirationTime<=b);b=exports.unstable_now();"function"===typeof e?x.callback=e:x===h(u)&&k(u);F(b)}else k(u);x=h(u)}if(null!==x)var m=!0;else{var n=h(v);null!==n&&J(G,n.startTime-b);m=!1}return m}finally{x=null,y=c,z=!1}}var M=!1,N=null,K=-1,O=5,P=0;
-function L(){return exports.unstable_now()>=P}function Q(){if(null!==N){var a=exports.unstable_now();P=a+O;var b=!0;try{b=N(!0,a)}finally{b?R():(M=!1,N=null)}}else M=!1}var R;if("function"===typeof E)R=function(){E(Q)};else if("undefined"!==typeof MessageChannel){var S=new MessageChannel,T=S.port2;S.port1.onmessage=Q;R=function(){T.postMessage(null)}}else R=function(){C(Q,0)};function H(a){N=a;M||(M=!0,R())}function J(a,b){K=C(function(){a(exports.unstable_now())},b)}
-exports.unstable_IdlePriority=5;exports.unstable_ImmediatePriority=1;exports.unstable_LowPriority=4;exports.unstable_NormalPriority=3;exports.unstable_Profiling=null;exports.unstable_UserBlockingPriority=2;exports.unstable_cancelCallback=function(a){a.callback=null};exports.unstable_continueExecution=function(){A||z||(A=!0,H(I))};
-exports.unstable_forceFrameRate=function(a){0>a||125<a?console.error("forceFrameRate takes a positive int between 0 and 125, forcing frame rates higher than 125 fps is not supported"):O=0<a?Math.floor(1E3/a):5};exports.unstable_getCurrentPriorityLevel=function(){return y};exports.unstable_getFirstCallbackNode=function(){return h(u)};exports.unstable_next=function(a){switch(y){case 1:case 2:case 3:var b=3;break;default:b=y}var c=y;y=b;try{return a()}finally{y=c}};exports.unstable_pauseExecution=function(){};
-exports.unstable_requestPaint=function(){};exports.unstable_runWithPriority=function(a,b){switch(a){case 1:case 2:case 3:case 4:case 5:break;default:a=3}var c=y;y=a;try{return b()}finally{y=c}};
-exports.unstable_scheduleCallback=function(a,b,c){var d=exports.unstable_now();"object"===typeof c&&null!==c?(c=c.delay,c="number"===typeof c&&0<c?d+c:d):c=d;switch(a){case 1:var e=-1;break;case 2:e=250;break;case 5:e=1073741823;break;case 4:e=1E4;break;default:e=5E3}e=c+e;a={id:w++,callback:b,priorityLevel:a,startTime:c,expirationTime:e,sortIndex:-1};c>d?(a.sortIndex=c,f(v,a),null===h(u)&&a===h(v)&&(B?(D(K),K=-1):B=!0,J(G,c-d))):(a.sortIndex=e,f(u,a),A||z||(A=!0,H(I)));return a};
-exports.unstable_shouldYield=L;exports.unstable_wrapCallback=function(a){var b=y;return function(){var c=y;y=b;try{return a.apply(this,arguments)}finally{y=c}}};
diff --git a/fixtures/tests/schedulers/pr/scheduler/index.js b/fixtures/tests/schedulers/pr/scheduler/index.js
deleted file mode 100644
index 77770b0c219e2..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/index.js
+++ /dev/null
@@ -1,7 +0,0 @@
-'use strict';
-
-if (process.env.NODE_ENV === 'production') {
-  module.exports = require('./cjs/scheduler.production.min.js');
-} else {
-  module.exports = require('./cjs/scheduler.development.js');
-}
diff --git a/fixtures/tests/schedulers/pr/scheduler/package.json b/fixtures/tests/schedulers/pr/scheduler/package.json
deleted file mode 100644
index cea8e16c2e87e..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/package.json
+++ /dev/null
@@ -1,40 +0,0 @@
-{
-  "name": "scheduler",
-  "version": "0.20.1",
-  "description": "Cooperative scheduler for the browser environment.",
-  "main": "index.js",
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/facebook/react.git",
-    "directory": "packages/scheduler"
-  },
-  "license": "MIT",
-  "keywords": [
-    "react"
-  ],
-  "bugs": {
-    "url": "https://github.com/facebook/react/issues"
-  },
-  "homepage": "https://reactjs.org/",
-  "dependencies": {
-    "loose-envify": "^1.1.0",
-    "object-assign": "^4.1.1"
-  },
-  "files": [
-    "LICENSE",
-    "README.md",
-    "build-info.json",
-    "index.js",
-    "tracing.js",
-    "tracing-profiling.js",
-    "unstable_mock.js",
-    "unstable_post_task.js",
-    "cjs/",
-    "umd/"
-  ],
-  "browserify": {
-    "transform": [
-      "loose-envify"
-    ]
-  }
-}
diff --git a/fixtures/tests/schedulers/pr/scheduler/tracing-profiling.js b/fixtures/tests/schedulers/pr/scheduler/tracing-profiling.js
deleted file mode 100644
index cb2d20c025226..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/tracing-profiling.js
+++ /dev/null
@@ -1,7 +0,0 @@
-'use strict';
-
-if (process.env.NODE_ENV === 'production') {
-  module.exports = require('./cjs/scheduler-tracing.profiling.min.js');
-} else {
-  module.exports = require('./cjs/scheduler-tracing.development.js');
-}
diff --git a/fixtures/tests/schedulers/pr/scheduler/tracing.js b/fixtures/tests/schedulers/pr/scheduler/tracing.js
deleted file mode 100644
index 1e318bd901b5d..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/tracing.js
+++ /dev/null
@@ -1,7 +0,0 @@
-'use strict';
-
-if (process.env.NODE_ENV === 'production') {
-  module.exports = require('./cjs/scheduler-tracing.production.min.js');
-} else {
-  module.exports = require('./cjs/scheduler-tracing.development.js');
-}
diff --git a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.development.js b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.development.js
deleted file mode 100644
index a81bf8fe2f98d..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.development.js
+++ /dev/null
@@ -1,80 +0,0 @@
-/**
- * @license React
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-'use strict';
-
-(function(global, factory) {
-  // eslint-disable-next-line no-unused-expressions
-  typeof exports === 'object' && typeof module !== 'undefined'
-    ? (module.exports = factory(require('react')))
-    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
-    ? define(['react'], factory) // eslint-disable-line no-undef
-    : (global.SchedulerTracing = factory(global));
-})(this, function(global) {
-  function unstable_clear() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_clear.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getCurrent() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getCurrent.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getThreadID() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getThreadID.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_subscribe() {
-    // eslint-disable-next-line max-len
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_subscribe.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_trace() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_trace.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_unsubscribe() {
-    // eslint-disable-next-line max-len
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_unsubscribe.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_wrap() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_wrap.apply(
-      this,
-      arguments
-    );
-  }
-
-  return Object.freeze({
-    unstable_clear: unstable_clear,
-    unstable_getCurrent: unstable_getCurrent,
-    unstable_getThreadID: unstable_getThreadID,
-    unstable_subscribe: unstable_subscribe,
-    unstable_trace: unstable_trace,
-    unstable_unsubscribe: unstable_unsubscribe,
-    unstable_wrap: unstable_wrap,
-  });
-});
diff --git a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.production.min.js b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.production.min.js
deleted file mode 100644
index a81bf8fe2f98d..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.production.min.js
+++ /dev/null
@@ -1,80 +0,0 @@
-/**
- * @license React
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-'use strict';
-
-(function(global, factory) {
-  // eslint-disable-next-line no-unused-expressions
-  typeof exports === 'object' && typeof module !== 'undefined'
-    ? (module.exports = factory(require('react')))
-    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
-    ? define(['react'], factory) // eslint-disable-line no-undef
-    : (global.SchedulerTracing = factory(global));
-})(this, function(global) {
-  function unstable_clear() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_clear.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getCurrent() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getCurrent.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getThreadID() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getThreadID.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_subscribe() {
-    // eslint-disable-next-line max-len
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_subscribe.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_trace() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_trace.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_unsubscribe() {
-    // eslint-disable-next-line max-len
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_unsubscribe.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_wrap() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_wrap.apply(
-      this,
-      arguments
-    );
-  }
-
-  return Object.freeze({
-    unstable_clear: unstable_clear,
-    unstable_getCurrent: unstable_getCurrent,
-    unstable_getThreadID: unstable_getThreadID,
-    unstable_subscribe: unstable_subscribe,
-    unstable_trace: unstable_trace,
-    unstable_unsubscribe: unstable_unsubscribe,
-    unstable_wrap: unstable_wrap,
-  });
-});
diff --git a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.profiling.min.js b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.profiling.min.js
deleted file mode 100644
index a81bf8fe2f98d..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-tracing.profiling.min.js
+++ /dev/null
@@ -1,80 +0,0 @@
-/**
- * @license React
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-'use strict';
-
-(function(global, factory) {
-  // eslint-disable-next-line no-unused-expressions
-  typeof exports === 'object' && typeof module !== 'undefined'
-    ? (module.exports = factory(require('react')))
-    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
-    ? define(['react'], factory) // eslint-disable-line no-undef
-    : (global.SchedulerTracing = factory(global));
-})(this, function(global) {
-  function unstable_clear() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_clear.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getCurrent() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getCurrent.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getThreadID() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getThreadID.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_subscribe() {
-    // eslint-disable-next-line max-len
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_subscribe.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_trace() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_trace.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_unsubscribe() {
-    // eslint-disable-next-line max-len
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_unsubscribe.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_wrap() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_wrap.apply(
-      this,
-      arguments
-    );
-  }
-
-  return Object.freeze({
-    unstable_clear: unstable_clear,
-    unstable_getCurrent: unstable_getCurrent,
-    unstable_getThreadID: unstable_getThreadID,
-    unstable_subscribe: unstable_subscribe,
-    unstable_trace: unstable_trace,
-    unstable_unsubscribe: unstable_unsubscribe,
-    unstable_wrap: unstable_wrap,
-  });
-});
diff --git a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-unstable_mock.development.js b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-unstable_mock.development.js
deleted file mode 100644
index 5a6aace3bcb3c..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-unstable_mock.development.js
+++ /dev/null
@@ -1,693 +0,0 @@
-/** @license React vundefined
- * scheduler-unstable_mock.development.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-(function (global, factory) {
-  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
-  typeof define === 'function' && define.amd ? define(['exports'], factory) :
-  (global = global || self, factory(global.SchedulerMock = {}));
-}(this, (function (exports) { 'use strict';
-
-  var enableSchedulerDebugging = false;
-  var enableProfiling = false;
-
-  function push(heap, node) {
-    var index = heap.length;
-    heap.push(node);
-    siftUp(heap, node, index);
-  }
-  function peek(heap) {
-    var first = heap[0];
-    return first === undefined ? null : first;
-  }
-  function pop(heap) {
-    var first = heap[0];
-
-    if (first !== undefined) {
-      var last = heap.pop();
-
-      if (last !== first) {
-        heap[0] = last;
-        siftDown(heap, last, 0);
-      }
-
-      return first;
-    } else {
-      return null;
-    }
-  }
-
-  function siftUp(heap, node, i) {
-    var index = i;
-
-    while (true) {
-      var parentIndex = index - 1 >>> 1;
-      var parent = heap[parentIndex];
-
-      if (parent !== undefined && compare(parent, node) > 0) {
-        // The parent is larger. Swap positions.
-        heap[parentIndex] = node;
-        heap[index] = parent;
-        index = parentIndex;
-      } else {
-        // The parent is smaller. Exit.
-        return;
-      }
-    }
-  }
-
-  function siftDown(heap, node, i) {
-    var index = i;
-    var length = heap.length;
-
-    while (index < length) {
-      var leftIndex = (index + 1) * 2 - 1;
-      var left = heap[leftIndex];
-      var rightIndex = leftIndex + 1;
-      var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those.
-
-      if (left !== undefined && compare(left, node) < 0) {
-        if (right !== undefined && compare(right, left) < 0) {
-          heap[index] = right;
-          heap[rightIndex] = node;
-          index = rightIndex;
-        } else {
-          heap[index] = left;
-          heap[leftIndex] = node;
-          index = leftIndex;
-        }
-      } else if (right !== undefined && compare(right, node) < 0) {
-        heap[index] = right;
-        heap[rightIndex] = node;
-        index = rightIndex;
-      } else {
-        // Neither child is smaller. Exit.
-        return;
-      }
-    }
-  }
-
-  function compare(a, b) {
-    // Compare sort index first, then task id.
-    var diff = a.sortIndex - b.sortIndex;
-    return diff !== 0 ? diff : a.id - b.id;
-  }
-
-  // TODO: Use symbols?
-  var ImmediatePriority = 1;
-  var UserBlockingPriority = 2;
-  var NormalPriority = 3;
-  var LowPriority = 4;
-  var IdlePriority = 5;
-
-  function markTaskErrored(task, ms) {
-  }
-
-  /* eslint-disable no-var */
-  // Math.pow(2, 30) - 1
-  // 0b111111111111111111111111111111
-
-  var maxSigned31BitInt = 1073741823; // Times out immediately
-
-  var IMMEDIATE_PRIORITY_TIMEOUT = -1; // Eventually times out
-
-  var USER_BLOCKING_PRIORITY_TIMEOUT = 250;
-  var NORMAL_PRIORITY_TIMEOUT = 5000;
-  var LOW_PRIORITY_TIMEOUT = 10000; // Never times out
-
-  var IDLE_PRIORITY_TIMEOUT = maxSigned31BitInt; // Tasks are stored on a min heap
-
-  var taskQueue = [];
-  var timerQueue = []; // Incrementing id counter. Used to maintain insertion order.
-
-  var taskIdCounter = 1; // Pausing the scheduler is useful for debugging.
-  var currentTask = null;
-  var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrancy.
-
-  var isPerformingWork = false;
-  var isHostCallbackScheduled = false;
-  var isHostTimeoutScheduled = false;
-  var currentMockTime = 0;
-  var scheduledCallback = null;
-  var scheduledTimeout = null;
-  var timeoutTime = -1;
-  var yieldedValues = null;
-  var expectedNumberOfYields = -1;
-  var didStop = false;
-  var isFlushing = false;
-  var needsPaint = false;
-  var shouldYieldForPaint = false;
-
-  function advanceTimers(currentTime) {
-    // Check for tasks that are no longer delayed and add them to the queue.
-    var timer = peek(timerQueue);
-
-    while (timer !== null) {
-      if (timer.callback === null) {
-        // Timer was cancelled.
-        pop(timerQueue);
-      } else if (timer.startTime <= currentTime) {
-        // Timer fired. Transfer to the task queue.
-        pop(timerQueue);
-        timer.sortIndex = timer.expirationTime;
-        push(taskQueue, timer);
-      } else {
-        // Remaining timers are pending.
-        return;
-      }
-
-      timer = peek(timerQueue);
-    }
-  }
-
-  function handleTimeout(currentTime) {
-    isHostTimeoutScheduled = false;
-    advanceTimers(currentTime);
-
-    if (!isHostCallbackScheduled) {
-      if (peek(taskQueue) !== null) {
-        isHostCallbackScheduled = true;
-        requestHostCallback(flushWork);
-      } else {
-        var firstTimer = peek(timerQueue);
-
-        if (firstTimer !== null) {
-          requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
-        }
-      }
-    }
-  }
-
-  function flushWork(hasTimeRemaining, initialTime) {
-
-
-    isHostCallbackScheduled = false;
-
-    if (isHostTimeoutScheduled) {
-      // We scheduled a timeout but it's no longer needed. Cancel it.
-      isHostTimeoutScheduled = false;
-      cancelHostTimeout();
-    }
-
-    isPerformingWork = true;
-    var previousPriorityLevel = currentPriorityLevel;
-
-    try {
-      if (enableProfiling) {
-        try {
-          return workLoop(hasTimeRemaining, initialTime);
-        } catch (error) {
-          if (currentTask !== null) {
-            var currentTime = getCurrentTime();
-            markTaskErrored(currentTask, currentTime);
-            currentTask.isQueued = false;
-          }
-
-          throw error;
-        }
-      } else {
-        // No catch in prod code path.
-        return workLoop(hasTimeRemaining, initialTime);
-      }
-    } finally {
-      currentTask = null;
-      currentPriorityLevel = previousPriorityLevel;
-      isPerformingWork = false;
-    }
-  }
-
-  function workLoop(hasTimeRemaining, initialTime) {
-    var currentTime = initialTime;
-    advanceTimers(currentTime);
-    currentTask = peek(taskQueue);
-
-    while (currentTask !== null && !(enableSchedulerDebugging )) {
-      if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost())) {
-        // This currentTask hasn't expired, and we've reached the deadline.
-        break;
-      }
-
-      var callback = currentTask.callback;
-
-      if (typeof callback === 'function') {
-        currentTask.callback = null;
-        currentPriorityLevel = currentTask.priorityLevel;
-        var didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
-
-        var continuationCallback = callback(didUserCallbackTimeout);
-        currentTime = getCurrentTime();
-
-        if (typeof continuationCallback === 'function') {
-          currentTask.callback = continuationCallback;
-        } else {
-
-          if (currentTask === peek(taskQueue)) {
-            pop(taskQueue);
-          }
-        }
-
-        advanceTimers(currentTime);
-      } else {
-        pop(taskQueue);
-      }
-
-      currentTask = peek(taskQueue);
-    } // Return whether there's additional work
-
-
-    if (currentTask !== null) {
-      return true;
-    } else {
-      var firstTimer = peek(timerQueue);
-
-      if (firstTimer !== null) {
-        requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
-      }
-
-      return false;
-    }
-  }
-
-  function unstable_runWithPriority(priorityLevel, eventHandler) {
-    switch (priorityLevel) {
-      case ImmediatePriority:
-      case UserBlockingPriority:
-      case NormalPriority:
-      case LowPriority:
-      case IdlePriority:
-        break;
-
-      default:
-        priorityLevel = NormalPriority;
-    }
-
-    var previousPriorityLevel = currentPriorityLevel;
-    currentPriorityLevel = priorityLevel;
-
-    try {
-      return eventHandler();
-    } finally {
-      currentPriorityLevel = previousPriorityLevel;
-    }
-  }
-
-  function unstable_next(eventHandler) {
-    var priorityLevel;
-
-    switch (currentPriorityLevel) {
-      case ImmediatePriority:
-      case UserBlockingPriority:
-      case NormalPriority:
-        // Shift down to normal priority
-        priorityLevel = NormalPriority;
-        break;
-
-      default:
-        // Anything lower than normal priority should remain at the current level.
-        priorityLevel = currentPriorityLevel;
-        break;
-    }
-
-    var previousPriorityLevel = currentPriorityLevel;
-    currentPriorityLevel = priorityLevel;
-
-    try {
-      return eventHandler();
-    } finally {
-      currentPriorityLevel = previousPriorityLevel;
-    }
-  }
-
-  function unstable_wrapCallback(callback) {
-    var parentPriorityLevel = currentPriorityLevel;
-    return function () {
-      // This is a fork of runWithPriority, inlined for performance.
-      var previousPriorityLevel = currentPriorityLevel;
-      currentPriorityLevel = parentPriorityLevel;
-
-      try {
-        return callback.apply(this, arguments);
-      } finally {
-        currentPriorityLevel = previousPriorityLevel;
-      }
-    };
-  }
-
-  function unstable_scheduleCallback(priorityLevel, callback, options) {
-    var currentTime = getCurrentTime();
-    var startTime;
-
-    if (typeof options === 'object' && options !== null) {
-      var delay = options.delay;
-
-      if (typeof delay === 'number' && delay > 0) {
-        startTime = currentTime + delay;
-      } else {
-        startTime = currentTime;
-      }
-    } else {
-      startTime = currentTime;
-    }
-
-    var timeout;
-
-    switch (priorityLevel) {
-      case ImmediatePriority:
-        timeout = IMMEDIATE_PRIORITY_TIMEOUT;
-        break;
-
-      case UserBlockingPriority:
-        timeout = USER_BLOCKING_PRIORITY_TIMEOUT;
-        break;
-
-      case IdlePriority:
-        timeout = IDLE_PRIORITY_TIMEOUT;
-        break;
-
-      case LowPriority:
-        timeout = LOW_PRIORITY_TIMEOUT;
-        break;
-
-      case NormalPriority:
-      default:
-        timeout = NORMAL_PRIORITY_TIMEOUT;
-        break;
-    }
-
-    var expirationTime = startTime + timeout;
-    var newTask = {
-      id: taskIdCounter++,
-      callback: callback,
-      priorityLevel: priorityLevel,
-      startTime: startTime,
-      expirationTime: expirationTime,
-      sortIndex: -1
-    };
-
-    if (startTime > currentTime) {
-      // This is a delayed task.
-      newTask.sortIndex = startTime;
-      push(timerQueue, newTask);
-
-      if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
-        // All tasks are delayed, and this is the task with the earliest delay.
-        if (isHostTimeoutScheduled) {
-          // Cancel an existing timeout.
-          cancelHostTimeout();
-        } else {
-          isHostTimeoutScheduled = true;
-        } // Schedule a timeout.
-
-
-        requestHostTimeout(handleTimeout, startTime - currentTime);
-      }
-    } else {
-      newTask.sortIndex = expirationTime;
-      push(taskQueue, newTask);
-      // wait until the next time we yield.
-
-
-      if (!isHostCallbackScheduled && !isPerformingWork) {
-        isHostCallbackScheduled = true;
-        requestHostCallback(flushWork);
-      }
-    }
-
-    return newTask;
-  }
-
-  function unstable_pauseExecution() {
-  }
-
-  function unstable_continueExecution() {
-
-    if (!isHostCallbackScheduled && !isPerformingWork) {
-      isHostCallbackScheduled = true;
-      requestHostCallback(flushWork);
-    }
-  }
-
-  function unstable_getFirstCallbackNode() {
-    return peek(taskQueue);
-  }
-
-  function unstable_cancelCallback(task) {
-    // remove from the queue because you can't remove arbitrary nodes from an
-    // array based heap, only the first one.)
-
-
-    task.callback = null;
-  }
-
-  function unstable_getCurrentPriorityLevel() {
-    return currentPriorityLevel;
-  }
-
-  function requestHostCallback(callback) {
-    scheduledCallback = callback;
-  }
-
-  function requestHostTimeout(callback, ms) {
-    scheduledTimeout = callback;
-    timeoutTime = currentMockTime + ms;
-  }
-
-  function cancelHostTimeout() {
-    scheduledTimeout = null;
-    timeoutTime = -1;
-  }
-
-  function shouldYieldToHost() {
-    if (expectedNumberOfYields !== -1 && yieldedValues !== null && yieldedValues.length >= expectedNumberOfYields || shouldYieldForPaint && needsPaint) {
-      // We yielded at least as many values as expected. Stop flushing.
-      didStop = true;
-      return true;
-    }
-
-    return false;
-  }
-
-  function getCurrentTime() {
-    return currentMockTime;
-  }
-
-  function forceFrameRate() {// No-op
-  }
-
-  function reset() {
-    if (isFlushing) {
-      throw new Error('Cannot reset while already flushing work.');
-    }
-
-    currentMockTime = 0;
-    scheduledCallback = null;
-    scheduledTimeout = null;
-    timeoutTime = -1;
-    yieldedValues = null;
-    expectedNumberOfYields = -1;
-    didStop = false;
-    isFlushing = false;
-    needsPaint = false;
-  } // Should only be used via an assertion helper that inspects the yielded values.
-
-
-  function unstable_flushNumberOfYields(count) {
-    if (isFlushing) {
-      throw new Error('Already flushing work.');
-    }
-
-    if (scheduledCallback !== null) {
-      var cb = scheduledCallback;
-      expectedNumberOfYields = count;
-      isFlushing = true;
-
-      try {
-        var hasMoreWork = true;
-
-        do {
-          hasMoreWork = cb(true, currentMockTime);
-        } while (hasMoreWork && !didStop);
-
-        if (!hasMoreWork) {
-          scheduledCallback = null;
-        }
-      } finally {
-        expectedNumberOfYields = -1;
-        didStop = false;
-        isFlushing = false;
-      }
-    }
-  }
-
-  function unstable_flushUntilNextPaint() {
-    if (isFlushing) {
-      throw new Error('Already flushing work.');
-    }
-
-    if (scheduledCallback !== null) {
-      var cb = scheduledCallback;
-      shouldYieldForPaint = true;
-      needsPaint = false;
-      isFlushing = true;
-
-      try {
-        var hasMoreWork = true;
-
-        do {
-          hasMoreWork = cb(true, currentMockTime);
-        } while (hasMoreWork && !didStop);
-
-        if (!hasMoreWork) {
-          scheduledCallback = null;
-        }
-      } finally {
-        shouldYieldForPaint = false;
-        didStop = false;
-        isFlushing = false;
-      }
-    }
-  }
-
-  function unstable_flushExpired() {
-    if (isFlushing) {
-      throw new Error('Already flushing work.');
-    }
-
-    if (scheduledCallback !== null) {
-      isFlushing = true;
-
-      try {
-        var hasMoreWork = scheduledCallback(false, currentMockTime);
-
-        if (!hasMoreWork) {
-          scheduledCallback = null;
-        }
-      } finally {
-        isFlushing = false;
-      }
-    }
-  }
-
-  function unstable_flushAllWithoutAsserting() {
-    // Returns false if no work was flushed.
-    if (isFlushing) {
-      throw new Error('Already flushing work.');
-    }
-
-    if (scheduledCallback !== null) {
-      var cb = scheduledCallback;
-      isFlushing = true;
-
-      try {
-        var hasMoreWork = true;
-
-        do {
-          hasMoreWork = cb(true, currentMockTime);
-        } while (hasMoreWork);
-
-        if (!hasMoreWork) {
-          scheduledCallback = null;
-        }
-
-        return true;
-      } finally {
-        isFlushing = false;
-      }
-    } else {
-      return false;
-    }
-  }
-
-  function unstable_clearYields() {
-    if (yieldedValues === null) {
-      return [];
-    }
-
-    var values = yieldedValues;
-    yieldedValues = null;
-    return values;
-  }
-
-  function unstable_flushAll() {
-    if (yieldedValues !== null) {
-      throw new Error('Log is not empty. Assert on the log of yielded values before ' + 'flushing additional work.');
-    }
-
-    unstable_flushAllWithoutAsserting();
-
-    if (yieldedValues !== null) {
-      throw new Error('While flushing work, something yielded a value. Use an ' + 'assertion helper to assert on the log of yielded values, e.g. ' + 'expect(Scheduler).toFlushAndYield([...])');
-    }
-  }
-
-  function unstable_yieldValue(value) {
-    // eslint-disable-next-line react-internal/no-production-logging
-    if (console.log.name === 'disabledLog') {
-      // If console.log has been patched, we assume we're in render
-      // replaying and we ignore any values yielding in the second pass.
-      return;
-    }
-
-    if (yieldedValues === null) {
-      yieldedValues = [value];
-    } else {
-      yieldedValues.push(value);
-    }
-  }
-
-  function unstable_advanceTime(ms) {
-    // eslint-disable-next-line react-internal/no-production-logging
-    if (console.log.name === 'disabledLog') {
-      // If console.log has been patched, we assume we're in render
-      // replaying and we ignore any time advancing in the second pass.
-      return;
-    }
-
-    currentMockTime += ms;
-
-    if (scheduledTimeout !== null && timeoutTime <= currentMockTime) {
-      scheduledTimeout(currentMockTime);
-      timeoutTime = -1;
-      scheduledTimeout = null;
-    }
-  }
-
-  function requestPaint() {
-    needsPaint = true;
-  }
-  var unstable_Profiling =  null;
-
-  exports.reset = reset;
-  exports.unstable_IdlePriority = IdlePriority;
-  exports.unstable_ImmediatePriority = ImmediatePriority;
-  exports.unstable_LowPriority = LowPriority;
-  exports.unstable_NormalPriority = NormalPriority;
-  exports.unstable_Profiling = unstable_Profiling;
-  exports.unstable_UserBlockingPriority = UserBlockingPriority;
-  exports.unstable_advanceTime = unstable_advanceTime;
-  exports.unstable_cancelCallback = unstable_cancelCallback;
-  exports.unstable_clearYields = unstable_clearYields;
-  exports.unstable_continueExecution = unstable_continueExecution;
-  exports.unstable_flushAll = unstable_flushAll;
-  exports.unstable_flushAllWithoutAsserting = unstable_flushAllWithoutAsserting;
-  exports.unstable_flushExpired = unstable_flushExpired;
-  exports.unstable_flushNumberOfYields = unstable_flushNumberOfYields;
-  exports.unstable_flushUntilNextPaint = unstable_flushUntilNextPaint;
-  exports.unstable_forceFrameRate = forceFrameRate;
-  exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
-  exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
-  exports.unstable_next = unstable_next;
-  exports.unstable_now = getCurrentTime;
-  exports.unstable_pauseExecution = unstable_pauseExecution;
-  exports.unstable_requestPaint = requestPaint;
-  exports.unstable_runWithPriority = unstable_runWithPriority;
-  exports.unstable_scheduleCallback = unstable_scheduleCallback;
-  exports.unstable_shouldYield = shouldYieldToHost;
-  exports.unstable_wrapCallback = unstable_wrapCallback;
-  exports.unstable_yieldValue = unstable_yieldValue;
-
-})));
diff --git a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-unstable_mock.production.min.js b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-unstable_mock.production.min.js
deleted file mode 100644
index 26808939fb846..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler-unstable_mock.production.min.js
+++ /dev/null
@@ -1,18 +0,0 @@
-/** @license React vundefined
- * scheduler-unstable_mock.production.min.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-(function(){'use strict';(function(a,p){"object"===typeof exports&&"undefined"!==typeof module?p(exports):"function"===typeof define&&define.amd?define(["exports"],p):(a=a||self,p(a.SchedulerMock={}))})(this,function(a){function p(b,h){var c=b.length;b.push(h);a:for(;;){var a=c-1>>>1,w=b[a];if(void 0!==w&&0<z(w,h))b[a]=h,b[c]=w,c=a;else break a}}function m(b){b=b[0];return void 0===b?null:b}function A(b){var h=b[0];if(void 0!==h){var c=b.pop();if(c!==h){b[0]=c;a:for(var a=0,w=b.length;a<w;){var e=2*(a+1)-1,d=
-b[e],g=e+1,f=b[g];if(void 0!==d&&0>z(d,c))void 0!==f&&0>z(f,d)?(b[a]=f,b[g]=c,a=g):(b[a]=d,b[e]=c,a=e);else if(void 0!==f&&0>z(f,c))b[a]=f,b[g]=c,a=g;else break a}}return h}return null}function z(b,h){var a=b.sortIndex-h.sortIndex;return 0!==a?a:b.id-h.id}function D(b){for(var a=m(r);null!==a;){if(null===a.callback)A(r);else if(a.startTime<=b)A(r),a.sortIndex=a.expirationTime,p(n,a);else break;a=m(r)}}function E(b){x=!1;D(b);if(!u)if(null!==m(n))u=!0,e=F;else{var a=m(r);null!==a&&(b=a.startTime-b,
-q=E,t=g+b)}}function F(b,a){u=!1;x&&(x=!1,q=null,t=-1);B=!0;var c=d;try{D(a);for(l=m(n);null!==l&&(!(l.expirationTime>a)||b&&!H());){var h=l.callback;if("function"===typeof h){l.callback=null;d=l.priorityLevel;var e=h(l.expirationTime<=a);a=g;"function"===typeof e?l.callback=e:l===m(n)&&A(n);D(a)}else A(n);l=m(n)}if(null!==l)var f=!0;else{var k=m(r);if(null!==k){var p=k.startTime-a;q=E;t=g+p}f=!1}return f}finally{l=null,d=c,B=!1}}function H(){return-1!==y&&null!==k&&k.length>=y||G&&C?v=!0:!1}function I(){if(f)throw Error("Already flushing work.");
-if(null!==e){var b=e;f=!0;try{var a=!0;do a=b(!0,g);while(a);a||(e=null);return!0}finally{f=!1}}else return!1}var n=[],r=[],J=1,l=null,d=3,B=!1,u=!1,x=!1,g=0,e=null,q=null,t=-1,k=null,y=-1,v=!1,f=!1,C=!1,G=!1;a.reset=function(){if(f)throw Error("Cannot reset while already flushing work.");g=0;q=e=null;t=-1;k=null;y=-1;C=f=v=!1};a.unstable_IdlePriority=5;a.unstable_ImmediatePriority=1;a.unstable_LowPriority=4;a.unstable_NormalPriority=3;a.unstable_Profiling=null;a.unstable_UserBlockingPriority=2;a.unstable_advanceTime=
-function(b){"disabledLog"!==console.log.name&&(g+=b,null!==q&&t<=g&&(q(g),t=-1,q=null))};a.unstable_cancelCallback=function(b){b.callback=null};a.unstable_clearYields=function(){if(null===k)return[];var b=k;k=null;return b};a.unstable_continueExecution=function(){u||B||(u=!0,e=F)};a.unstable_flushAll=function(){if(null!==k)throw Error("Log is not empty. Assert on the log of yielded values before flushing additional work.");I();if(null!==k)throw Error("While flushing work, something yielded a value. Use an assertion helper to assert on the log of yielded values, e.g. expect(Scheduler).toFlushAndYield([...])");
-};a.unstable_flushAllWithoutAsserting=I;a.unstable_flushExpired=function(){if(f)throw Error("Already flushing work.");if(null!==e){f=!0;try{e(!1,g)||(e=null)}finally{f=!1}}};a.unstable_flushNumberOfYields=function(b){if(f)throw Error("Already flushing work.");if(null!==e){var a=e;y=b;f=!0;try{b=!0;do b=a(!0,g);while(b&&!v);b||(e=null)}finally{y=-1,f=v=!1}}};a.unstable_flushUntilNextPaint=function(){if(f)throw Error("Already flushing work.");if(null!==e){var a=e;G=!0;C=!1;f=!0;try{var h=!0;do h=a(!0,
-g);while(h&&!v);h||(e=null)}finally{f=v=G=!1}}};a.unstable_forceFrameRate=function(){};a.unstable_getCurrentPriorityLevel=function(){return d};a.unstable_getFirstCallbackNode=function(){return m(n)};a.unstable_next=function(a){switch(d){case 1:case 2:case 3:var b=3;break;default:b=d}var c=d;d=b;try{return a()}finally{d=c}};a.unstable_now=function(){return g};a.unstable_pauseExecution=function(){};a.unstable_requestPaint=function(){C=!0};a.unstable_runWithPriority=function(a,e){switch(a){case 1:case 2:case 3:case 4:case 5:break;
-default:a=3}var b=d;d=a;try{return e()}finally{d=b}};a.unstable_scheduleCallback=function(a,f,c){var b=g;"object"===typeof c&&null!==c?(c=c.delay,c="number"===typeof c&&0<c?b+c:b):c=b;switch(a){case 1:var d=-1;break;case 2:d=250;break;case 5:d=1073741823;break;case 4:d=1E4;break;default:d=5E3}d=c+d;a={id:J++,callback:f,priorityLevel:a,startTime:c,expirationTime:d,sortIndex:-1};c>b?(a.sortIndex=c,p(r,a),null===m(n)&&a===m(r)&&(x?(q=null,t=-1):x=!0,q=E,t=g+(c-b))):(a.sortIndex=d,p(n,a),u||B||(u=!0,
-e=F));return a};a.unstable_shouldYield=H;a.unstable_wrapCallback=function(a){var b=d;return function(){var c=d;d=b;try{return a.apply(this,arguments)}finally{d=c}}};a.unstable_yieldValue=function(a){"disabledLog"!==console.log.name&&(null===k?k=[a]:k.push(a))}});
-})();
diff --git a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler.development.js b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler.development.js
deleted file mode 100644
index b960dc91132e7..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler.development.js
+++ /dev/null
@@ -1,152 +0,0 @@
-/**
- * @license React
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-/* eslint-disable max-len */
-
-'use strict';
-
-(function(global, factory) {
-  // eslint-disable-next-line no-unused-expressions
-  typeof exports === 'object' && typeof module !== 'undefined'
-    ? (module.exports = factory(require('react')))
-    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
-    ? define(['react'], factory) // eslint-disable-line no-undef
-    : (global.Scheduler = factory(global));
-})(this, function(global) {
-  function unstable_now() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_now.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_scheduleCallback() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_scheduleCallback.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_cancelCallback() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_cancelCallback.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_shouldYield() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_shouldYield.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_requestPaint() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_requestPaint.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_runWithPriority() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_runWithPriority.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_next() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_next.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_wrapCallback() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_wrapCallback.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getCurrentPriorityLevel() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getCurrentPriorityLevel.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getFirstCallbackNode() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getFirstCallbackNode.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_pauseExecution() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_pauseExecution.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_continueExecution() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_continueExecution.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_forceFrameRate() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_forceFrameRate.apply(
-      this,
-      arguments
-    );
-  }
-
-  return Object.freeze({
-    unstable_now: unstable_now,
-    unstable_scheduleCallback: unstable_scheduleCallback,
-    unstable_cancelCallback: unstable_cancelCallback,
-    unstable_shouldYield: unstable_shouldYield,
-    unstable_requestPaint: unstable_requestPaint,
-    unstable_runWithPriority: unstable_runWithPriority,
-    unstable_next: unstable_next,
-    unstable_wrapCallback: unstable_wrapCallback,
-    unstable_getCurrentPriorityLevel: unstable_getCurrentPriorityLevel,
-    unstable_continueExecution: unstable_continueExecution,
-    unstable_pauseExecution: unstable_pauseExecution,
-    unstable_getFirstCallbackNode: unstable_getFirstCallbackNode,
-    unstable_forceFrameRate: unstable_forceFrameRate,
-    get unstable_IdlePriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_IdlePriority;
-    },
-    get unstable_ImmediatePriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_ImmediatePriority;
-    },
-    get unstable_LowPriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_LowPriority;
-    },
-    get unstable_NormalPriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_NormalPriority;
-    },
-    get unstable_UserBlockingPriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_UserBlockingPriority;
-    },
-    get unstable_Profiling() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_Profiling;
-    },
-  });
-});
diff --git a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler.production.min.js b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler.production.min.js
deleted file mode 100644
index 0c2584331b847..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler.production.min.js
+++ /dev/null
@@ -1,146 +0,0 @@
-/**
- * @license React
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-/* eslint-disable max-len */
-
-'use strict';
-
-(function(global, factory) {
-  // eslint-disable-next-line no-unused-expressions
-  typeof exports === 'object' && typeof module !== 'undefined'
-    ? (module.exports = factory(require('react')))
-    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
-    ? define(['react'], factory) // eslint-disable-line no-undef
-    : (global.Scheduler = factory(global));
-})(this, function(global) {
-  function unstable_now() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_now.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_scheduleCallback() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_scheduleCallback.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_cancelCallback() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_cancelCallback.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_shouldYield() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_shouldYield.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_requestPaint() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_requestPaint.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_runWithPriority() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_runWithPriority.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_next() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_next.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_wrapCallback() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_wrapCallback.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getCurrentPriorityLevel() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getCurrentPriorityLevel.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getFirstCallbackNode() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getFirstCallbackNode.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_pauseExecution() {
-    return undefined;
-  }
-
-  function unstable_continueExecution() {
-    return undefined;
-  }
-
-  function unstable_forceFrameRate() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_forceFrameRate.apply(
-      this,
-      arguments
-    );
-  }
-
-  return Object.freeze({
-    unstable_now: unstable_now,
-    unstable_scheduleCallback: unstable_scheduleCallback,
-    unstable_cancelCallback: unstable_cancelCallback,
-    unstable_shouldYield: unstable_shouldYield,
-    unstable_requestPaint: unstable_requestPaint,
-    unstable_runWithPriority: unstable_runWithPriority,
-    unstable_next: unstable_next,
-    unstable_wrapCallback: unstable_wrapCallback,
-    unstable_getCurrentPriorityLevel: unstable_getCurrentPriorityLevel,
-    unstable_continueExecution: unstable_continueExecution,
-    unstable_pauseExecution: unstable_pauseExecution,
-    unstable_getFirstCallbackNode: unstable_getFirstCallbackNode,
-    unstable_forceFrameRate: unstable_forceFrameRate,
-    get unstable_IdlePriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_IdlePriority;
-    },
-    get unstable_ImmediatePriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_ImmediatePriority;
-    },
-    get unstable_LowPriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_LowPriority;
-    },
-    get unstable_NormalPriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_NormalPriority;
-    },
-    get unstable_UserBlockingPriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_UserBlockingPriority;
-    },
-    get unstable_Profiling() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_Profiling;
-    },
-  });
-});
diff --git a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler.profiling.min.js b/fixtures/tests/schedulers/pr/scheduler/umd/scheduler.profiling.min.js
deleted file mode 100644
index 0c2584331b847..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/umd/scheduler.profiling.min.js
+++ /dev/null
@@ -1,146 +0,0 @@
-/**
- * @license React
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-/* eslint-disable max-len */
-
-'use strict';
-
-(function(global, factory) {
-  // eslint-disable-next-line no-unused-expressions
-  typeof exports === 'object' && typeof module !== 'undefined'
-    ? (module.exports = factory(require('react')))
-    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
-    ? define(['react'], factory) // eslint-disable-line no-undef
-    : (global.Scheduler = factory(global));
-})(this, function(global) {
-  function unstable_now() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_now.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_scheduleCallback() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_scheduleCallback.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_cancelCallback() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_cancelCallback.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_shouldYield() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_shouldYield.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_requestPaint() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_requestPaint.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_runWithPriority() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_runWithPriority.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_next() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_next.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_wrapCallback() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_wrapCallback.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getCurrentPriorityLevel() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getCurrentPriorityLevel.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getFirstCallbackNode() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getFirstCallbackNode.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_pauseExecution() {
-    return undefined;
-  }
-
-  function unstable_continueExecution() {
-    return undefined;
-  }
-
-  function unstable_forceFrameRate() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_forceFrameRate.apply(
-      this,
-      arguments
-    );
-  }
-
-  return Object.freeze({
-    unstable_now: unstable_now,
-    unstable_scheduleCallback: unstable_scheduleCallback,
-    unstable_cancelCallback: unstable_cancelCallback,
-    unstable_shouldYield: unstable_shouldYield,
-    unstable_requestPaint: unstable_requestPaint,
-    unstable_runWithPriority: unstable_runWithPriority,
-    unstable_next: unstable_next,
-    unstable_wrapCallback: unstable_wrapCallback,
-    unstable_getCurrentPriorityLevel: unstable_getCurrentPriorityLevel,
-    unstable_continueExecution: unstable_continueExecution,
-    unstable_pauseExecution: unstable_pauseExecution,
-    unstable_getFirstCallbackNode: unstable_getFirstCallbackNode,
-    unstable_forceFrameRate: unstable_forceFrameRate,
-    get unstable_IdlePriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_IdlePriority;
-    },
-    get unstable_ImmediatePriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_ImmediatePriority;
-    },
-    get unstable_LowPriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_LowPriority;
-    },
-    get unstable_NormalPriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_NormalPriority;
-    },
-    get unstable_UserBlockingPriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_UserBlockingPriority;
-    },
-    get unstable_Profiling() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_Profiling;
-    },
-  });
-});
diff --git a/fixtures/tests/schedulers/pr/scheduler/unstable_mock.js b/fixtures/tests/schedulers/pr/scheduler/unstable_mock.js
deleted file mode 100644
index e72ea3186f005..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/unstable_mock.js
+++ /dev/null
@@ -1,7 +0,0 @@
-'use strict';
-
-if (process.env.NODE_ENV === 'production') {
-  module.exports = require('./cjs/scheduler-unstable_mock.production.min.js');
-} else {
-  module.exports = require('./cjs/scheduler-unstable_mock.development.js');
-}
diff --git a/fixtures/tests/schedulers/pr/scheduler/unstable_post_task.js b/fixtures/tests/schedulers/pr/scheduler/unstable_post_task.js
deleted file mode 100644
index 62ecbd5a072bc..0000000000000
--- a/fixtures/tests/schedulers/pr/scheduler/unstable_post_task.js
+++ /dev/null
@@ -1,7 +0,0 @@
-'use strict';
-
-if (process.env.NODE_ENV === 'production') {
-  module.exports = require('./cjs/scheduler-unstable_post_task.production.min.js');
-} else {
-  module.exports = require('./cjs/scheduler-unstable_post_task.development.js');
-}
diff --git a/fixtures/tests/schedulers/stable/scheduler/LICENSE b/fixtures/tests/schedulers/stable/scheduler/LICENSE
deleted file mode 100644
index b96dcb0480a0b..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/LICENSE
+++ /dev/null
@@ -1,21 +0,0 @@
-MIT License
-
-Copyright (c) Facebook, Inc. and its affiliates.
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
diff --git a/fixtures/tests/schedulers/stable/scheduler/README.md b/fixtures/tests/schedulers/stable/scheduler/README.md
deleted file mode 100644
index 10e4937a05b96..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/README.md
+++ /dev/null
@@ -1,9 +0,0 @@
-# `scheduler`
-
-This is a package for cooperative scheduling in a browser environment. It is currently used internally by React, but we plan to make it more generic.
-
-The public API for this package is not yet finalized.
-
-### Thanks
-
-The React team thanks [Anton Podviaznikov](https://podviaznikov.com/) for donating the `scheduler` package name.
diff --git a/fixtures/tests/schedulers/stable/scheduler/build-info.json b/fixtures/tests/schedulers/stable/scheduler/build-info.json
deleted file mode 100644
index 5617e884a6192..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/build-info.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "branch": "17.0.1",
-  "buildNumber": "222790",
-  "checksum": "addb3df",
-  "commit": "8e5adfbd7",
-  "environment": "ci",
-  "reactVersion": "17.0.0-8e5adfbd7"
-}
diff --git a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.development.js b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.development.js
deleted file mode 100644
index 657c1ea83d570..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.development.js
+++ /dev/null
@@ -1,347 +0,0 @@
-/** @license React v0.20.1
- * scheduler-tracing.development.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-'use strict';
-
-if (process.env.NODE_ENV !== "production") {
-  (function() {
-'use strict';
-
-var DEFAULT_THREAD_ID = 0; // Counters used to generate unique IDs.
-
-var interactionIDCounter = 0;
-var threadIDCounter = 0; // Set of currently traced interactions.
-// Interactions "stack"–
-// Meaning that newly traced interactions are appended to the previously active set.
-// When an interaction goes out of scope, the previous set (if any) is restored.
-
-exports.__interactionsRef = null; // Listener(s) to notify when interactions begin and end.
-
-exports.__subscriberRef = null;
-
-{
-  exports.__interactionsRef = {
-    current: new Set()
-  };
-  exports.__subscriberRef = {
-    current: null
-  };
-}
-function unstable_clear(callback) {
-
-  var prevInteractions = exports.__interactionsRef.current;
-  exports.__interactionsRef.current = new Set();
-
-  try {
-    return callback();
-  } finally {
-    exports.__interactionsRef.current = prevInteractions;
-  }
-}
-function unstable_getCurrent() {
-  {
-    return exports.__interactionsRef.current;
-  }
-}
-function unstable_getThreadID() {
-  return ++threadIDCounter;
-}
-function unstable_trace(name, timestamp, callback) {
-  var threadID = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : DEFAULT_THREAD_ID;
-
-  var interaction = {
-    __count: 1,
-    id: interactionIDCounter++,
-    name: name,
-    timestamp: timestamp
-  };
-  var prevInteractions = exports.__interactionsRef.current; // Traced interactions should stack/accumulate.
-  // To do that, clone the current interactions.
-  // The previous set will be restored upon completion.
-
-  var interactions = new Set(prevInteractions);
-  interactions.add(interaction);
-  exports.__interactionsRef.current = interactions;
-  var subscriber = exports.__subscriberRef.current;
-  var returnValue;
-
-  try {
-    if (subscriber !== null) {
-      subscriber.onInteractionTraced(interaction);
-    }
-  } finally {
-    try {
-      if (subscriber !== null) {
-        subscriber.onWorkStarted(interactions, threadID);
-      }
-    } finally {
-      try {
-        returnValue = callback();
-      } finally {
-        exports.__interactionsRef.current = prevInteractions;
-
-        try {
-          if (subscriber !== null) {
-            subscriber.onWorkStopped(interactions, threadID);
-          }
-        } finally {
-          interaction.__count--; // If no async work was scheduled for this interaction,
-          // Notify subscribers that it's completed.
-
-          if (subscriber !== null && interaction.__count === 0) {
-            subscriber.onInteractionScheduledWorkCompleted(interaction);
-          }
-        }
-      }
-    }
-  }
-
-  return returnValue;
-}
-function unstable_wrap(callback) {
-  var threadID = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : DEFAULT_THREAD_ID;
-
-  var wrappedInteractions = exports.__interactionsRef.current;
-  var subscriber = exports.__subscriberRef.current;
-
-  if (subscriber !== null) {
-    subscriber.onWorkScheduled(wrappedInteractions, threadID);
-  } // Update the pending async work count for the current interactions.
-  // Update after calling subscribers in case of error.
-
-
-  wrappedInteractions.forEach(function (interaction) {
-    interaction.__count++;
-  });
-  var hasRun = false;
-
-  function wrapped() {
-    var prevInteractions = exports.__interactionsRef.current;
-    exports.__interactionsRef.current = wrappedInteractions;
-    subscriber = exports.__subscriberRef.current;
-
-    try {
-      var returnValue;
-
-      try {
-        if (subscriber !== null) {
-          subscriber.onWorkStarted(wrappedInteractions, threadID);
-        }
-      } finally {
-        try {
-          returnValue = callback.apply(undefined, arguments);
-        } finally {
-          exports.__interactionsRef.current = prevInteractions;
-
-          if (subscriber !== null) {
-            subscriber.onWorkStopped(wrappedInteractions, threadID);
-          }
-        }
-      }
-
-      return returnValue;
-    } finally {
-      if (!hasRun) {
-        // We only expect a wrapped function to be executed once,
-        // But in the event that it's executed more than once–
-        // Only decrement the outstanding interaction counts once.
-        hasRun = true; // Update pending async counts for all wrapped interactions.
-        // If this was the last scheduled async work for any of them,
-        // Mark them as completed.
-
-        wrappedInteractions.forEach(function (interaction) {
-          interaction.__count--;
-
-          if (subscriber !== null && interaction.__count === 0) {
-            subscriber.onInteractionScheduledWorkCompleted(interaction);
-          }
-        });
-      }
-    }
-  }
-
-  wrapped.cancel = function cancel() {
-    subscriber = exports.__subscriberRef.current;
-
-    try {
-      if (subscriber !== null) {
-        subscriber.onWorkCanceled(wrappedInteractions, threadID);
-      }
-    } finally {
-      // Update pending async counts for all wrapped interactions.
-      // If this was the last scheduled async work for any of them,
-      // Mark them as completed.
-      wrappedInteractions.forEach(function (interaction) {
-        interaction.__count--;
-
-        if (subscriber && interaction.__count === 0) {
-          subscriber.onInteractionScheduledWorkCompleted(interaction);
-        }
-      });
-    }
-  };
-
-  return wrapped;
-}
-
-var subscribers = null;
-
-{
-  subscribers = new Set();
-}
-
-function unstable_subscribe(subscriber) {
-  {
-    subscribers.add(subscriber);
-
-    if (subscribers.size === 1) {
-      exports.__subscriberRef.current = {
-        onInteractionScheduledWorkCompleted: onInteractionScheduledWorkCompleted,
-        onInteractionTraced: onInteractionTraced,
-        onWorkCanceled: onWorkCanceled,
-        onWorkScheduled: onWorkScheduled,
-        onWorkStarted: onWorkStarted,
-        onWorkStopped: onWorkStopped
-      };
-    }
-  }
-}
-function unstable_unsubscribe(subscriber) {
-  {
-    subscribers.delete(subscriber);
-
-    if (subscribers.size === 0) {
-      exports.__subscriberRef.current = null;
-    }
-  }
-}
-
-function onInteractionTraced(interaction) {
-  var didCatchError = false;
-  var caughtError = null;
-  subscribers.forEach(function (subscriber) {
-    try {
-      subscriber.onInteractionTraced(interaction);
-    } catch (error) {
-      if (!didCatchError) {
-        didCatchError = true;
-        caughtError = error;
-      }
-    }
-  });
-
-  if (didCatchError) {
-    throw caughtError;
-  }
-}
-
-function onInteractionScheduledWorkCompleted(interaction) {
-  var didCatchError = false;
-  var caughtError = null;
-  subscribers.forEach(function (subscriber) {
-    try {
-      subscriber.onInteractionScheduledWorkCompleted(interaction);
-    } catch (error) {
-      if (!didCatchError) {
-        didCatchError = true;
-        caughtError = error;
-      }
-    }
-  });
-
-  if (didCatchError) {
-    throw caughtError;
-  }
-}
-
-function onWorkScheduled(interactions, threadID) {
-  var didCatchError = false;
-  var caughtError = null;
-  subscribers.forEach(function (subscriber) {
-    try {
-      subscriber.onWorkScheduled(interactions, threadID);
-    } catch (error) {
-      if (!didCatchError) {
-        didCatchError = true;
-        caughtError = error;
-      }
-    }
-  });
-
-  if (didCatchError) {
-    throw caughtError;
-  }
-}
-
-function onWorkStarted(interactions, threadID) {
-  var didCatchError = false;
-  var caughtError = null;
-  subscribers.forEach(function (subscriber) {
-    try {
-      subscriber.onWorkStarted(interactions, threadID);
-    } catch (error) {
-      if (!didCatchError) {
-        didCatchError = true;
-        caughtError = error;
-      }
-    }
-  });
-
-  if (didCatchError) {
-    throw caughtError;
-  }
-}
-
-function onWorkStopped(interactions, threadID) {
-  var didCatchError = false;
-  var caughtError = null;
-  subscribers.forEach(function (subscriber) {
-    try {
-      subscriber.onWorkStopped(interactions, threadID);
-    } catch (error) {
-      if (!didCatchError) {
-        didCatchError = true;
-        caughtError = error;
-      }
-    }
-  });
-
-  if (didCatchError) {
-    throw caughtError;
-  }
-}
-
-function onWorkCanceled(interactions, threadID) {
-  var didCatchError = false;
-  var caughtError = null;
-  subscribers.forEach(function (subscriber) {
-    try {
-      subscriber.onWorkCanceled(interactions, threadID);
-    } catch (error) {
-      if (!didCatchError) {
-        didCatchError = true;
-        caughtError = error;
-      }
-    }
-  });
-
-  if (didCatchError) {
-    throw caughtError;
-  }
-}
-
-exports.unstable_clear = unstable_clear;
-exports.unstable_getCurrent = unstable_getCurrent;
-exports.unstable_getThreadID = unstable_getThreadID;
-exports.unstable_subscribe = unstable_subscribe;
-exports.unstable_trace = unstable_trace;
-exports.unstable_unsubscribe = unstable_unsubscribe;
-exports.unstable_wrap = unstable_wrap;
-  })();
-}
diff --git a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.production.min.js b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.production.min.js
deleted file mode 100644
index f15a5d090d72d..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.production.min.js
+++ /dev/null
@@ -1,9 +0,0 @@
-/** @license React v0.20.1
- * scheduler-tracing.production.min.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-'use strict';var b=0;exports.__interactionsRef=null;exports.__subscriberRef=null;exports.unstable_clear=function(a){return a()};exports.unstable_getCurrent=function(){return null};exports.unstable_getThreadID=function(){return++b};exports.unstable_subscribe=function(){};exports.unstable_trace=function(a,d,c){return c()};exports.unstable_unsubscribe=function(){};exports.unstable_wrap=function(a){return a};
diff --git a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.profiling.min.js b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.profiling.min.js
deleted file mode 100644
index 6910bd0392047..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-tracing.profiling.min.js
+++ /dev/null
@@ -1,16 +0,0 @@
-/** @license React v0.20.1
- * scheduler-tracing.profiling.min.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-'use strict';var g=0,l=0;exports.__interactionsRef=null;exports.__subscriberRef=null;exports.__interactionsRef={current:new Set};exports.__subscriberRef={current:null};var m=null;m=new Set;function n(e){var d=!1,a=null;m.forEach(function(c){try{c.onInteractionTraced(e)}catch(b){d||(d=!0,a=b)}});if(d)throw a;}function p(e){var d=!1,a=null;m.forEach(function(c){try{c.onInteractionScheduledWorkCompleted(e)}catch(b){d||(d=!0,a=b)}});if(d)throw a;}
-function q(e,d){var a=!1,c=null;m.forEach(function(b){try{b.onWorkScheduled(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}function r(e,d){var a=!1,c=null;m.forEach(function(b){try{b.onWorkStarted(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}function t(e,d){var a=!1,c=null;m.forEach(function(b){try{b.onWorkStopped(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}function u(e,d){var a=!1,c=null;m.forEach(function(b){try{b.onWorkCanceled(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}
-exports.unstable_clear=function(e){var d=exports.__interactionsRef.current;exports.__interactionsRef.current=new Set;try{return e()}finally{exports.__interactionsRef.current=d}};exports.unstable_getCurrent=function(){return exports.__interactionsRef.current};exports.unstable_getThreadID=function(){return++l};
-exports.unstable_subscribe=function(e){m.add(e);1===m.size&&(exports.__subscriberRef.current={onInteractionScheduledWorkCompleted:p,onInteractionTraced:n,onWorkCanceled:u,onWorkScheduled:q,onWorkStarted:r,onWorkStopped:t})};
-exports.unstable_trace=function(e,d,a){var c=3<arguments.length&&void 0!==arguments[3]?arguments[3]:0,b={__count:1,id:g++,name:e,timestamp:d},f=exports.__interactionsRef.current,k=new Set(f);k.add(b);exports.__interactionsRef.current=k;var h=exports.__subscriberRef.current;try{if(null!==h)h.onInteractionTraced(b)}finally{try{if(null!==h)h.onWorkStarted(k,c)}finally{try{var v=a()}finally{exports.__interactionsRef.current=f;try{if(null!==h)h.onWorkStopped(k,c)}finally{if(b.__count--,null!==h&&0===b.__count)h.onInteractionScheduledWorkCompleted(b)}}}}return v};
-exports.unstable_unsubscribe=function(e){m.delete(e);0===m.size&&(exports.__subscriberRef.current=null)};
-exports.unstable_wrap=function(e){function d(){var d=exports.__interactionsRef.current;exports.__interactionsRef.current=c;b=exports.__subscriberRef.current;try{try{if(null!==b)b.onWorkStarted(c,a)}finally{try{var h=e.apply(void 0,arguments)}finally{if(exports.__interactionsRef.current=d,null!==b)b.onWorkStopped(c,a)}}return h}finally{f||(f=!0,c.forEach(function(a){a.__count--;if(null!==b&&0===a.__count)b.onInteractionScheduledWorkCompleted(a)}))}}var a=1<arguments.length&&void 0!==arguments[1]?arguments[1]:
-0,c=exports.__interactionsRef.current,b=exports.__subscriberRef.current;if(null!==b)b.onWorkScheduled(c,a);c.forEach(function(a){a.__count++});var f=!1;d.cancel=function(){b=exports.__subscriberRef.current;try{if(null!==b)b.onWorkCanceled(c,a)}finally{c.forEach(function(a){a.__count--;if(b&&0===a.__count)b.onInteractionScheduledWorkCompleted(a)})}};return d};
diff --git a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_mock.development.js b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_mock.development.js
deleted file mode 100644
index 594447e517964..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_mock.development.js
+++ /dev/null
@@ -1,863 +0,0 @@
-/** @license React v0.20.1
- * scheduler-unstable_mock.development.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-'use strict';
-
-if (process.env.NODE_ENV !== "production") {
-  (function() {
-'use strict';
-
-var enableSchedulerDebugging = false;
-var enableProfiling = true;
-
-var currentTime = 0;
-var scheduledCallback = null;
-var scheduledTimeout = null;
-var timeoutTime = -1;
-var yieldedValues = null;
-var expectedNumberOfYields = -1;
-var didStop = false;
-var isFlushing = false;
-var needsPaint = false;
-var shouldYieldForPaint = false;
-function requestHostCallback(callback) {
-  scheduledCallback = callback;
-}
-function requestHostTimeout(callback, ms) {
-  scheduledTimeout = callback;
-  timeoutTime = currentTime + ms;
-}
-function cancelHostTimeout() {
-  scheduledTimeout = null;
-  timeoutTime = -1;
-}
-function shouldYieldToHost() {
-  if (expectedNumberOfYields !== -1 && yieldedValues !== null && yieldedValues.length >= expectedNumberOfYields || shouldYieldForPaint && needsPaint) {
-    // We yielded at least as many values as expected. Stop flushing.
-    didStop = true;
-    return true;
-  }
-
-  return false;
-}
-function getCurrentTime() {
-  return currentTime;
-}
-function forceFrameRate() {// No-op
-}
-
-function unstable_flushNumberOfYields(count) {
-  if (isFlushing) {
-    throw new Error('Already flushing work.');
-  }
-
-  if (scheduledCallback !== null) {
-    var cb = scheduledCallback;
-    expectedNumberOfYields = count;
-    isFlushing = true;
-
-    try {
-      var hasMoreWork = true;
-
-      do {
-        hasMoreWork = cb(true, currentTime);
-      } while (hasMoreWork && !didStop);
-
-      if (!hasMoreWork) {
-        scheduledCallback = null;
-      }
-    } finally {
-      expectedNumberOfYields = -1;
-      didStop = false;
-      isFlushing = false;
-    }
-  }
-}
-function unstable_flushUntilNextPaint() {
-  if (isFlushing) {
-    throw new Error('Already flushing work.');
-  }
-
-  if (scheduledCallback !== null) {
-    var cb = scheduledCallback;
-    shouldYieldForPaint = true;
-    needsPaint = false;
-    isFlushing = true;
-
-    try {
-      var hasMoreWork = true;
-
-      do {
-        hasMoreWork = cb(true, currentTime);
-      } while (hasMoreWork && !didStop);
-
-      if (!hasMoreWork) {
-        scheduledCallback = null;
-      }
-    } finally {
-      shouldYieldForPaint = false;
-      didStop = false;
-      isFlushing = false;
-    }
-  }
-}
-function unstable_flushExpired() {
-  if (isFlushing) {
-    throw new Error('Already flushing work.');
-  }
-
-  if (scheduledCallback !== null) {
-    isFlushing = true;
-
-    try {
-      var hasMoreWork = scheduledCallback(false, currentTime);
-
-      if (!hasMoreWork) {
-        scheduledCallback = null;
-      }
-    } finally {
-      isFlushing = false;
-    }
-  }
-}
-function unstable_flushAllWithoutAsserting() {
-  // Returns false if no work was flushed.
-  if (isFlushing) {
-    throw new Error('Already flushing work.');
-  }
-
-  if (scheduledCallback !== null) {
-    var cb = scheduledCallback;
-    isFlushing = true;
-
-    try {
-      var hasMoreWork = true;
-
-      do {
-        hasMoreWork = cb(true, currentTime);
-      } while (hasMoreWork);
-
-      if (!hasMoreWork) {
-        scheduledCallback = null;
-      }
-
-      return true;
-    } finally {
-      isFlushing = false;
-    }
-  } else {
-    return false;
-  }
-}
-function unstable_clearYields() {
-  if (yieldedValues === null) {
-    return [];
-  }
-
-  var values = yieldedValues;
-  yieldedValues = null;
-  return values;
-}
-function unstable_flushAll() {
-  if (yieldedValues !== null) {
-    throw new Error('Log is not empty. Assert on the log of yielded values before ' + 'flushing additional work.');
-  }
-
-  unstable_flushAllWithoutAsserting();
-
-  if (yieldedValues !== null) {
-    throw new Error('While flushing work, something yielded a value. Use an ' + 'assertion helper to assert on the log of yielded values, e.g. ' + 'expect(Scheduler).toFlushAndYield([...])');
-  }
-}
-function unstable_yieldValue(value) {
-  // eslint-disable-next-line react-internal/no-production-logging
-  if (console.log.name === 'disabledLog') {
-    // If console.log has been patched, we assume we're in render
-    // replaying and we ignore any values yielding in the second pass.
-    return;
-  }
-
-  if (yieldedValues === null) {
-    yieldedValues = [value];
-  } else {
-    yieldedValues.push(value);
-  }
-}
-function unstable_advanceTime(ms) {
-  // eslint-disable-next-line react-internal/no-production-logging
-  if (console.log.name === 'disabledLog') {
-    // If console.log has been patched, we assume we're in render
-    // replaying and we ignore any time advancing in the second pass.
-    return;
-  }
-
-  currentTime += ms;
-
-  if (scheduledTimeout !== null && timeoutTime <= currentTime) {
-    scheduledTimeout(currentTime);
-    timeoutTime = -1;
-    scheduledTimeout = null;
-  }
-}
-function requestPaint() {
-  needsPaint = true;
-}
-
-function push(heap, node) {
-  var index = heap.length;
-  heap.push(node);
-  siftUp(heap, node, index);
-}
-function peek(heap) {
-  var first = heap[0];
-  return first === undefined ? null : first;
-}
-function pop(heap) {
-  var first = heap[0];
-
-  if (first !== undefined) {
-    var last = heap.pop();
-
-    if (last !== first) {
-      heap[0] = last;
-      siftDown(heap, last, 0);
-    }
-
-    return first;
-  } else {
-    return null;
-  }
-}
-
-function siftUp(heap, node, i) {
-  var index = i;
-
-  while (true) {
-    var parentIndex = index - 1 >>> 1;
-    var parent = heap[parentIndex];
-
-    if (parent !== undefined && compare(parent, node) > 0) {
-      // The parent is larger. Swap positions.
-      heap[parentIndex] = node;
-      heap[index] = parent;
-      index = parentIndex;
-    } else {
-      // The parent is smaller. Exit.
-      return;
-    }
-  }
-}
-
-function siftDown(heap, node, i) {
-  var index = i;
-  var length = heap.length;
-
-  while (index < length) {
-    var leftIndex = (index + 1) * 2 - 1;
-    var left = heap[leftIndex];
-    var rightIndex = leftIndex + 1;
-    var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those.
-
-    if (left !== undefined && compare(left, node) < 0) {
-      if (right !== undefined && compare(right, left) < 0) {
-        heap[index] = right;
-        heap[rightIndex] = node;
-        index = rightIndex;
-      } else {
-        heap[index] = left;
-        heap[leftIndex] = node;
-        index = leftIndex;
-      }
-    } else if (right !== undefined && compare(right, node) < 0) {
-      heap[index] = right;
-      heap[rightIndex] = node;
-      index = rightIndex;
-    } else {
-      // Neither child is smaller. Exit.
-      return;
-    }
-  }
-}
-
-function compare(a, b) {
-  // Compare sort index first, then task id.
-  var diff = a.sortIndex - b.sortIndex;
-  return diff !== 0 ? diff : a.id - b.id;
-}
-
-// TODO: Use symbols?
-var NoPriority = 0;
-var ImmediatePriority = 1;
-var UserBlockingPriority = 2;
-var NormalPriority = 3;
-var LowPriority = 4;
-var IdlePriority = 5;
-
-var runIdCounter = 0;
-var mainThreadIdCounter = 0;
-var profilingStateSize = 4;
-var sharedProfilingBuffer =  // $FlowFixMe Flow doesn't know about SharedArrayBuffer
-typeof SharedArrayBuffer === 'function' ? new SharedArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : // $FlowFixMe Flow doesn't know about ArrayBuffer
-typeof ArrayBuffer === 'function' ? new ArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : null // Don't crash the init path on IE9
-;
-var profilingState =  sharedProfilingBuffer !== null ? new Int32Array(sharedProfilingBuffer) : []; // We can't read this but it helps save bytes for null checks
-
-var PRIORITY = 0;
-var CURRENT_TASK_ID = 1;
-var CURRENT_RUN_ID = 2;
-var QUEUE_SIZE = 3;
-
-{
-  profilingState[PRIORITY] = NoPriority; // This is maintained with a counter, because the size of the priority queue
-  // array might include canceled tasks.
-
-  profilingState[QUEUE_SIZE] = 0;
-  profilingState[CURRENT_TASK_ID] = 0;
-} // Bytes per element is 4
-
-
-var INITIAL_EVENT_LOG_SIZE = 131072;
-var MAX_EVENT_LOG_SIZE = 524288; // Equivalent to 2 megabytes
-
-var eventLogSize = 0;
-var eventLogBuffer = null;
-var eventLog = null;
-var eventLogIndex = 0;
-var TaskStartEvent = 1;
-var TaskCompleteEvent = 2;
-var TaskErrorEvent = 3;
-var TaskCancelEvent = 4;
-var TaskRunEvent = 5;
-var TaskYieldEvent = 6;
-var SchedulerSuspendEvent = 7;
-var SchedulerResumeEvent = 8;
-
-function logEvent(entries) {
-  if (eventLog !== null) {
-    var offset = eventLogIndex;
-    eventLogIndex += entries.length;
-
-    if (eventLogIndex + 1 > eventLogSize) {
-      eventLogSize *= 2;
-
-      if (eventLogSize > MAX_EVENT_LOG_SIZE) {
-        // Using console['error'] to evade Babel and ESLint
-        console['error']("Scheduler Profiling: Event log exceeded maximum size. Don't " + 'forget to call `stopLoggingProfilingEvents()`.');
-        stopLoggingProfilingEvents();
-        return;
-      }
-
-      var newEventLog = new Int32Array(eventLogSize * 4);
-      newEventLog.set(eventLog);
-      eventLogBuffer = newEventLog.buffer;
-      eventLog = newEventLog;
-    }
-
-    eventLog.set(entries, offset);
-  }
-}
-
-function startLoggingProfilingEvents() {
-  eventLogSize = INITIAL_EVENT_LOG_SIZE;
-  eventLogBuffer = new ArrayBuffer(eventLogSize * 4);
-  eventLog = new Int32Array(eventLogBuffer);
-  eventLogIndex = 0;
-}
-function stopLoggingProfilingEvents() {
-  var buffer = eventLogBuffer;
-  eventLogSize = 0;
-  eventLogBuffer = null;
-  eventLog = null;
-  eventLogIndex = 0;
-  return buffer;
-}
-function markTaskStart(task, ms) {
-  {
-    profilingState[QUEUE_SIZE]++;
-
-    if (eventLog !== null) {
-      // performance.now returns a float, representing milliseconds. When the
-      // event is logged, it's coerced to an int. Convert to microseconds to
-      // maintain extra degrees of precision.
-      logEvent([TaskStartEvent, ms * 1000, task.id, task.priorityLevel]);
-    }
-  }
-}
-function markTaskCompleted(task, ms) {
-  {
-    profilingState[PRIORITY] = NoPriority;
-    profilingState[CURRENT_TASK_ID] = 0;
-    profilingState[QUEUE_SIZE]--;
-
-    if (eventLog !== null) {
-      logEvent([TaskCompleteEvent, ms * 1000, task.id]);
-    }
-  }
-}
-function markTaskCanceled(task, ms) {
-  {
-    profilingState[QUEUE_SIZE]--;
-
-    if (eventLog !== null) {
-      logEvent([TaskCancelEvent, ms * 1000, task.id]);
-    }
-  }
-}
-function markTaskErrored(task, ms) {
-  {
-    profilingState[PRIORITY] = NoPriority;
-    profilingState[CURRENT_TASK_ID] = 0;
-    profilingState[QUEUE_SIZE]--;
-
-    if (eventLog !== null) {
-      logEvent([TaskErrorEvent, ms * 1000, task.id]);
-    }
-  }
-}
-function markTaskRun(task, ms) {
-  {
-    runIdCounter++;
-    profilingState[PRIORITY] = task.priorityLevel;
-    profilingState[CURRENT_TASK_ID] = task.id;
-    profilingState[CURRENT_RUN_ID] = runIdCounter;
-
-    if (eventLog !== null) {
-      logEvent([TaskRunEvent, ms * 1000, task.id, runIdCounter]);
-    }
-  }
-}
-function markTaskYield(task, ms) {
-  {
-    profilingState[PRIORITY] = NoPriority;
-    profilingState[CURRENT_TASK_ID] = 0;
-    profilingState[CURRENT_RUN_ID] = 0;
-
-    if (eventLog !== null) {
-      logEvent([TaskYieldEvent, ms * 1000, task.id, runIdCounter]);
-    }
-  }
-}
-function markSchedulerSuspended(ms) {
-  {
-    mainThreadIdCounter++;
-
-    if (eventLog !== null) {
-      logEvent([SchedulerSuspendEvent, ms * 1000, mainThreadIdCounter]);
-    }
-  }
-}
-function markSchedulerUnsuspended(ms) {
-  {
-    if (eventLog !== null) {
-      logEvent([SchedulerResumeEvent, ms * 1000, mainThreadIdCounter]);
-    }
-  }
-}
-
-/* eslint-disable no-var */
-// Math.pow(2, 30) - 1
-// 0b111111111111111111111111111111
-
-var maxSigned31BitInt = 1073741823; // Times out immediately
-
-var IMMEDIATE_PRIORITY_TIMEOUT = -1; // Eventually times out
-
-var USER_BLOCKING_PRIORITY_TIMEOUT = 250;
-var NORMAL_PRIORITY_TIMEOUT = 5000;
-var LOW_PRIORITY_TIMEOUT = 10000; // Never times out
-
-var IDLE_PRIORITY_TIMEOUT = maxSigned31BitInt; // Tasks are stored on a min heap
-
-var taskQueue = [];
-var timerQueue = []; // Incrementing id counter. Used to maintain insertion order.
-
-var taskIdCounter = 1; // Pausing the scheduler is useful for debugging.
-var currentTask = null;
-var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrancy.
-
-var isPerformingWork = false;
-var isHostCallbackScheduled = false;
-var isHostTimeoutScheduled = false;
-
-function advanceTimers(currentTime) {
-  // Check for tasks that are no longer delayed and add them to the queue.
-  var timer = peek(timerQueue);
-
-  while (timer !== null) {
-    if (timer.callback === null) {
-      // Timer was cancelled.
-      pop(timerQueue);
-    } else if (timer.startTime <= currentTime) {
-      // Timer fired. Transfer to the task queue.
-      pop(timerQueue);
-      timer.sortIndex = timer.expirationTime;
-      push(taskQueue, timer);
-
-      {
-        markTaskStart(timer, currentTime);
-        timer.isQueued = true;
-      }
-    } else {
-      // Remaining timers are pending.
-      return;
-    }
-
-    timer = peek(timerQueue);
-  }
-}
-
-function handleTimeout(currentTime) {
-  isHostTimeoutScheduled = false;
-  advanceTimers(currentTime);
-
-  if (!isHostCallbackScheduled) {
-    if (peek(taskQueue) !== null) {
-      isHostCallbackScheduled = true;
-      requestHostCallback(flushWork);
-    } else {
-      var firstTimer = peek(timerQueue);
-
-      if (firstTimer !== null) {
-        requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
-      }
-    }
-  }
-}
-
-function flushWork(hasTimeRemaining, initialTime) {
-  {
-    markSchedulerUnsuspended(initialTime);
-  } // We'll need a host callback the next time work is scheduled.
-
-
-  isHostCallbackScheduled = false;
-
-  if (isHostTimeoutScheduled) {
-    // We scheduled a timeout but it's no longer needed. Cancel it.
-    isHostTimeoutScheduled = false;
-    cancelHostTimeout();
-  }
-
-  isPerformingWork = true;
-  var previousPriorityLevel = currentPriorityLevel;
-
-  try {
-    if (enableProfiling) {
-      try {
-        return workLoop(hasTimeRemaining, initialTime);
-      } catch (error) {
-        if (currentTask !== null) {
-          var currentTime = getCurrentTime();
-          markTaskErrored(currentTask, currentTime);
-          currentTask.isQueued = false;
-        }
-
-        throw error;
-      }
-    } else {
-      // No catch in prod code path.
-      return workLoop(hasTimeRemaining, initialTime);
-    }
-  } finally {
-    currentTask = null;
-    currentPriorityLevel = previousPriorityLevel;
-    isPerformingWork = false;
-
-    {
-      var _currentTime = getCurrentTime();
-
-      markSchedulerSuspended(_currentTime);
-    }
-  }
-}
-
-function workLoop(hasTimeRemaining, initialTime) {
-  var currentTime = initialTime;
-  advanceTimers(currentTime);
-  currentTask = peek(taskQueue);
-
-  while (currentTask !== null && !(enableSchedulerDebugging )) {
-    if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost())) {
-      // This currentTask hasn't expired, and we've reached the deadline.
-      break;
-    }
-
-    var callback = currentTask.callback;
-
-    if (typeof callback === 'function') {
-      currentTask.callback = null;
-      currentPriorityLevel = currentTask.priorityLevel;
-      var didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
-      markTaskRun(currentTask, currentTime);
-      var continuationCallback = callback(didUserCallbackTimeout);
-      currentTime = getCurrentTime();
-
-      if (typeof continuationCallback === 'function') {
-        currentTask.callback = continuationCallback;
-        markTaskYield(currentTask, currentTime);
-      } else {
-        {
-          markTaskCompleted(currentTask, currentTime);
-          currentTask.isQueued = false;
-        }
-
-        if (currentTask === peek(taskQueue)) {
-          pop(taskQueue);
-        }
-      }
-
-      advanceTimers(currentTime);
-    } else {
-      pop(taskQueue);
-    }
-
-    currentTask = peek(taskQueue);
-  } // Return whether there's additional work
-
-
-  if (currentTask !== null) {
-    return true;
-  } else {
-    var firstTimer = peek(timerQueue);
-
-    if (firstTimer !== null) {
-      requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
-    }
-
-    return false;
-  }
-}
-
-function unstable_runWithPriority(priorityLevel, eventHandler) {
-  switch (priorityLevel) {
-    case ImmediatePriority:
-    case UserBlockingPriority:
-    case NormalPriority:
-    case LowPriority:
-    case IdlePriority:
-      break;
-
-    default:
-      priorityLevel = NormalPriority;
-  }
-
-  var previousPriorityLevel = currentPriorityLevel;
-  currentPriorityLevel = priorityLevel;
-
-  try {
-    return eventHandler();
-  } finally {
-    currentPriorityLevel = previousPriorityLevel;
-  }
-}
-
-function unstable_next(eventHandler) {
-  var priorityLevel;
-
-  switch (currentPriorityLevel) {
-    case ImmediatePriority:
-    case UserBlockingPriority:
-    case NormalPriority:
-      // Shift down to normal priority
-      priorityLevel = NormalPriority;
-      break;
-
-    default:
-      // Anything lower than normal priority should remain at the current level.
-      priorityLevel = currentPriorityLevel;
-      break;
-  }
-
-  var previousPriorityLevel = currentPriorityLevel;
-  currentPriorityLevel = priorityLevel;
-
-  try {
-    return eventHandler();
-  } finally {
-    currentPriorityLevel = previousPriorityLevel;
-  }
-}
-
-function unstable_wrapCallback(callback) {
-  var parentPriorityLevel = currentPriorityLevel;
-  return function () {
-    // This is a fork of runWithPriority, inlined for performance.
-    var previousPriorityLevel = currentPriorityLevel;
-    currentPriorityLevel = parentPriorityLevel;
-
-    try {
-      return callback.apply(this, arguments);
-    } finally {
-      currentPriorityLevel = previousPriorityLevel;
-    }
-  };
-}
-
-function unstable_scheduleCallback(priorityLevel, callback, options) {
-  var currentTime = getCurrentTime();
-  var startTime;
-
-  if (typeof options === 'object' && options !== null) {
-    var delay = options.delay;
-
-    if (typeof delay === 'number' && delay > 0) {
-      startTime = currentTime + delay;
-    } else {
-      startTime = currentTime;
-    }
-  } else {
-    startTime = currentTime;
-  }
-
-  var timeout;
-
-  switch (priorityLevel) {
-    case ImmediatePriority:
-      timeout = IMMEDIATE_PRIORITY_TIMEOUT;
-      break;
-
-    case UserBlockingPriority:
-      timeout = USER_BLOCKING_PRIORITY_TIMEOUT;
-      break;
-
-    case IdlePriority:
-      timeout = IDLE_PRIORITY_TIMEOUT;
-      break;
-
-    case LowPriority:
-      timeout = LOW_PRIORITY_TIMEOUT;
-      break;
-
-    case NormalPriority:
-    default:
-      timeout = NORMAL_PRIORITY_TIMEOUT;
-      break;
-  }
-
-  var expirationTime = startTime + timeout;
-  var newTask = {
-    id: taskIdCounter++,
-    callback: callback,
-    priorityLevel: priorityLevel,
-    startTime: startTime,
-    expirationTime: expirationTime,
-    sortIndex: -1
-  };
-
-  {
-    newTask.isQueued = false;
-  }
-
-  if (startTime > currentTime) {
-    // This is a delayed task.
-    newTask.sortIndex = startTime;
-    push(timerQueue, newTask);
-
-    if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
-      // All tasks are delayed, and this is the task with the earliest delay.
-      if (isHostTimeoutScheduled) {
-        // Cancel an existing timeout.
-        cancelHostTimeout();
-      } else {
-        isHostTimeoutScheduled = true;
-      } // Schedule a timeout.
-
-
-      requestHostTimeout(handleTimeout, startTime - currentTime);
-    }
-  } else {
-    newTask.sortIndex = expirationTime;
-    push(taskQueue, newTask);
-
-    {
-      markTaskStart(newTask, currentTime);
-      newTask.isQueued = true;
-    } // Schedule a host callback, if needed. If we're already performing work,
-    // wait until the next time we yield.
-
-
-    if (!isHostCallbackScheduled && !isPerformingWork) {
-      isHostCallbackScheduled = true;
-      requestHostCallback(flushWork);
-    }
-  }
-
-  return newTask;
-}
-
-function unstable_pauseExecution() {
-}
-
-function unstable_continueExecution() {
-
-  if (!isHostCallbackScheduled && !isPerformingWork) {
-    isHostCallbackScheduled = true;
-    requestHostCallback(flushWork);
-  }
-}
-
-function unstable_getFirstCallbackNode() {
-  return peek(taskQueue);
-}
-
-function unstable_cancelCallback(task) {
-  {
-    if (task.isQueued) {
-      var currentTime = getCurrentTime();
-      markTaskCanceled(task, currentTime);
-      task.isQueued = false;
-    }
-  } // Null out the callback to indicate the task has been canceled. (Can't
-  // remove from the queue because you can't remove arbitrary nodes from an
-  // array based heap, only the first one.)
-
-
-  task.callback = null;
-}
-
-function unstable_getCurrentPriorityLevel() {
-  return currentPriorityLevel;
-}
-
-var unstable_requestPaint = requestPaint;
-var unstable_Profiling =  {
-  startLoggingProfilingEvents: startLoggingProfilingEvents,
-  stopLoggingProfilingEvents: stopLoggingProfilingEvents,
-  sharedProfilingBuffer: sharedProfilingBuffer
-} ;
-
-exports.unstable_IdlePriority = IdlePriority;
-exports.unstable_ImmediatePriority = ImmediatePriority;
-exports.unstable_LowPriority = LowPriority;
-exports.unstable_NormalPriority = NormalPriority;
-exports.unstable_Profiling = unstable_Profiling;
-exports.unstable_UserBlockingPriority = UserBlockingPriority;
-exports.unstable_advanceTime = unstable_advanceTime;
-exports.unstable_cancelCallback = unstable_cancelCallback;
-exports.unstable_clearYields = unstable_clearYields;
-exports.unstable_continueExecution = unstable_continueExecution;
-exports.unstable_flushAll = unstable_flushAll;
-exports.unstable_flushAllWithoutAsserting = unstable_flushAllWithoutAsserting;
-exports.unstable_flushExpired = unstable_flushExpired;
-exports.unstable_flushNumberOfYields = unstable_flushNumberOfYields;
-exports.unstable_flushUntilNextPaint = unstable_flushUntilNextPaint;
-exports.unstable_forceFrameRate = forceFrameRate;
-exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
-exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
-exports.unstable_next = unstable_next;
-exports.unstable_now = getCurrentTime;
-exports.unstable_pauseExecution = unstable_pauseExecution;
-exports.unstable_requestPaint = unstable_requestPaint;
-exports.unstable_runWithPriority = unstable_runWithPriority;
-exports.unstable_scheduleCallback = unstable_scheduleCallback;
-exports.unstable_shouldYield = shouldYieldToHost;
-exports.unstable_wrapCallback = unstable_wrapCallback;
-exports.unstable_yieldValue = unstable_yieldValue;
-  })();
-}
diff --git a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_mock.production.min.js b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_mock.production.min.js
deleted file mode 100644
index 3970ae6029901..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_mock.production.min.js
+++ /dev/null
@@ -1,19 +0,0 @@
-/** @license React v0.20.1
- * scheduler-unstable_mock.production.min.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-'use strict';var f=0,g=null,h=null,k=-1,l=null,m=-1,n=!1,p=!1,q=!1,r=!1;function t(){return-1!==m&&null!==l&&l.length>=m||r&&q?n=!0:!1}function x(){if(p)throw Error("Already flushing work.");if(null!==g){var a=g;p=!0;try{var b=!0;do b=a(!0,f);while(b);b||(g=null);return!0}finally{p=!1}}else return!1}function z(a,b){var c=a.length;a.push(b);a:for(;;){var d=c-1>>>1,e=a[d];if(void 0!==e&&0<A(e,b))a[d]=b,a[c]=e,c=d;else break a}}function B(a){a=a[0];return void 0===a?null:a}
-function C(a){var b=a[0];if(void 0!==b){var c=a.pop();if(c!==b){a[0]=c;a:for(var d=0,e=a.length;d<e;){var u=2*(d+1)-1,v=a[u],w=u+1,y=a[w];if(void 0!==v&&0>A(v,c))void 0!==y&&0>A(y,v)?(a[d]=y,a[w]=c,d=w):(a[d]=v,a[u]=c,d=u);else if(void 0!==y&&0>A(y,c))a[d]=y,a[w]=c,d=w;else break a}}return b}return null}function A(a,b){var c=a.sortIndex-b.sortIndex;return 0!==c?c:a.id-b.id}var D=[],E=[],F=1,G=null,H=3,I=!1,J=!1,K=!1;
-function L(a){for(var b=B(E);null!==b;){if(null===b.callback)C(E);else if(b.startTime<=a)C(E),b.sortIndex=b.expirationTime,z(D,b);else break;b=B(E)}}function M(a){K=!1;L(a);if(!J)if(null!==B(D))J=!0,g=N;else{var b=B(E);null!==b&&(a=b.startTime-a,h=M,k=f+a)}}
-function N(a,b){J=!1;K&&(K=!1,h=null,k=-1);I=!0;var c=H;try{L(b);for(G=B(D);null!==G&&(!(G.expirationTime>b)||a&&!t());){var d=G.callback;if("function"===typeof d){G.callback=null;H=G.priorityLevel;var e=d(G.expirationTime<=b);b=f;"function"===typeof e?G.callback=e:G===B(D)&&C(D);L(b)}else C(D);G=B(D)}if(null!==G)var u=!0;else{var v=B(E);if(null!==v){var w=v.startTime-b;h=M;k=f+w}u=!1}return u}finally{G=null,H=c,I=!1}}exports.unstable_IdlePriority=5;exports.unstable_ImmediatePriority=1;
-exports.unstable_LowPriority=4;exports.unstable_NormalPriority=3;exports.unstable_Profiling=null;exports.unstable_UserBlockingPriority=2;exports.unstable_advanceTime=function(a){"disabledLog"!==console.log.name&&(f+=a,null!==h&&k<=f&&(h(f),k=-1,h=null))};exports.unstable_cancelCallback=function(a){a.callback=null};exports.unstable_clearYields=function(){if(null===l)return[];var a=l;l=null;return a};exports.unstable_continueExecution=function(){J||I||(J=!0,g=N)};
-exports.unstable_flushAll=function(){if(null!==l)throw Error("Log is not empty. Assert on the log of yielded values before flushing additional work.");x();if(null!==l)throw Error("While flushing work, something yielded a value. Use an assertion helper to assert on the log of yielded values, e.g. expect(Scheduler).toFlushAndYield([...])");};exports.unstable_flushAllWithoutAsserting=x;
-exports.unstable_flushExpired=function(){if(p)throw Error("Already flushing work.");if(null!==g){p=!0;try{g(!1,f)||(g=null)}finally{p=!1}}};exports.unstable_flushNumberOfYields=function(a){if(p)throw Error("Already flushing work.");if(null!==g){var b=g;m=a;p=!0;try{a=!0;do a=b(!0,f);while(a&&!n);a||(g=null)}finally{m=-1,p=n=!1}}};
-exports.unstable_flushUntilNextPaint=function(){if(p)throw Error("Already flushing work.");if(null!==g){var a=g;r=!0;q=!1;p=!0;try{var b=!0;do b=a(!0,f);while(b&&!n);b||(g=null)}finally{p=n=r=!1}}};exports.unstable_forceFrameRate=function(){};exports.unstable_getCurrentPriorityLevel=function(){return H};exports.unstable_getFirstCallbackNode=function(){return B(D)};exports.unstable_next=function(a){switch(H){case 1:case 2:case 3:var b=3;break;default:b=H}var c=H;H=b;try{return a()}finally{H=c}};
-exports.unstable_now=function(){return f};exports.unstable_pauseExecution=function(){};exports.unstable_requestPaint=function(){q=!0};exports.unstable_runWithPriority=function(a,b){switch(a){case 1:case 2:case 3:case 4:case 5:break;default:a=3}var c=H;H=a;try{return b()}finally{H=c}};
-exports.unstable_scheduleCallback=function(a,b,c){var d=f;"object"===typeof c&&null!==c?(c=c.delay,c="number"===typeof c&&0<c?d+c:d):c=d;switch(a){case 1:var e=-1;break;case 2:e=250;break;case 5:e=1073741823;break;case 4:e=1E4;break;default:e=5E3}e=c+e;a={id:F++,callback:b,priorityLevel:a,startTime:c,expirationTime:e,sortIndex:-1};c>d?(a.sortIndex=c,z(E,a),null===B(D)&&a===B(E)&&(K?(h=null,k=-1):K=!0,h=M,k=f+(c-d))):(a.sortIndex=e,z(D,a),J||I||(J=!0,g=N));return a};exports.unstable_shouldYield=t;
-exports.unstable_wrapCallback=function(a){var b=H;return function(){var c=H;H=b;try{return a.apply(this,arguments)}finally{H=c}}};exports.unstable_yieldValue=function(a){"disabledLog"!==console.log.name&&(null===l?l=[a]:l.push(a))};
diff --git a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_post_task.development.js b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_post_task.development.js
deleted file mode 100644
index 6fc7ed7c8c886..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_post_task.development.js
+++ /dev/null
@@ -1,206 +0,0 @@
-/** @license React v0.20.1
- * scheduler-unstable_post_task.development.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-'use strict';
-
-if (process.env.NODE_ENV !== "production") {
-  (function() {
-'use strict';
-
-// TODO: Use symbols?
-var ImmediatePriority = 1;
-var UserBlockingPriority = 2;
-var NormalPriority = 3;
-var LowPriority = 4;
-var IdlePriority = 5;
-
-var perf = window.performance;
-var setTimeout = window.setTimeout; // Use experimental Chrome Scheduler postTask API.
-
-var scheduler = global.scheduler;
-var getCurrentTime = perf.now.bind(perf);
-var unstable_now = getCurrentTime; // Scheduler periodically yields in case there is other work on the main
-// thread, like user events. By default, it yields multiple times per frame.
-// It does not attempt to align with frame boundaries, since most tasks don't
-// need to be frame aligned; for those that do, use requestAnimationFrame.
-
-var yieldInterval = 5;
-var deadline = 0;
-var currentPriorityLevel_DEPRECATED = NormalPriority; // `isInputPending` is not available. Since we have no way of knowing if
-// there's pending input, always yield at the end of the frame.
-
-function unstable_shouldYield() {
-  return getCurrentTime() >= deadline;
-}
-function unstable_requestPaint() {// Since we yield every frame regardless, `requestPaint` has no effect.
-}
-function unstable_scheduleCallback(priorityLevel, callback, options) {
-  var postTaskPriority;
-
-  switch (priorityLevel) {
-    case ImmediatePriority:
-    case UserBlockingPriority:
-      postTaskPriority = 'user-blocking';
-      break;
-
-    case LowPriority:
-    case NormalPriority:
-      postTaskPriority = 'user-visible';
-      break;
-
-    case IdlePriority:
-      postTaskPriority = 'background';
-      break;
-
-    default:
-      postTaskPriority = 'user-visible';
-      break;
-  }
-
-  var controller = new TaskController();
-  var postTaskOptions = {
-    priority: postTaskPriority,
-    delay: typeof options === 'object' && options !== null ? options.delay : 0,
-    signal: controller.signal
-  };
-  var node = {
-    _controller: controller
-  };
-  scheduler.postTask(runTask.bind(null, priorityLevel, postTaskPriority, node, callback), postTaskOptions).catch(handleAbortError);
-  return node;
-}
-
-function runTask(priorityLevel, postTaskPriority, node, callback) {
-  deadline = getCurrentTime() + yieldInterval;
-
-  try {
-    currentPriorityLevel_DEPRECATED = priorityLevel;
-    var _didTimeout_DEPRECATED = false;
-    var result = callback(_didTimeout_DEPRECATED);
-
-    if (typeof result === 'function') {
-      // Assume this is a continuation
-      var continuation = result;
-      var continuationController = new TaskController();
-      var continuationOptions = {
-        priority: postTaskPriority,
-        signal: continuationController.signal
-      }; // Update the original callback node's controller, since even though we're
-      // posting a new task, conceptually it's the same one.
-
-      node._controller = continuationController;
-      scheduler.postTask(runTask.bind(null, priorityLevel, postTaskPriority, node, continuation), continuationOptions).catch(handleAbortError);
-    }
-  } catch (error) {
-    // We're inside a `postTask` promise. If we don't handle this error, then it
-    // will trigger an "Unhandled promise rejection" error. We don't want that,
-    // but we do want the default error reporting behavior that normal
-    // (non-Promise) tasks get for unhandled errors.
-    //
-    // So we'll re-throw the error inside a regular browser task.
-    setTimeout(function () {
-      throw error;
-    });
-  } finally {
-    currentPriorityLevel_DEPRECATED = NormalPriority;
-  }
-}
-
-function handleAbortError(error) {// Abort errors are an implementation detail. We don't expose the
-  // TaskController to the user, nor do we expose the promise that is returned
-  // from `postTask`. So we should suppress them, since there's no way for the
-  // user to handle them.
-}
-
-function unstable_cancelCallback(node) {
-  var controller = node._controller;
-  controller.abort();
-}
-function unstable_runWithPriority(priorityLevel, callback) {
-  var previousPriorityLevel = currentPriorityLevel_DEPRECATED;
-  currentPriorityLevel_DEPRECATED = priorityLevel;
-
-  try {
-    return callback();
-  } finally {
-    currentPriorityLevel_DEPRECATED = previousPriorityLevel;
-  }
-}
-function unstable_getCurrentPriorityLevel() {
-  return currentPriorityLevel_DEPRECATED;
-}
-function unstable_next(callback) {
-  var priorityLevel;
-
-  switch (currentPriorityLevel_DEPRECATED) {
-    case ImmediatePriority:
-    case UserBlockingPriority:
-    case NormalPriority:
-      // Shift down to normal priority
-      priorityLevel = NormalPriority;
-      break;
-
-    default:
-      // Anything lower than normal priority should remain at the current level.
-      priorityLevel = currentPriorityLevel_DEPRECATED;
-      break;
-  }
-
-  var previousPriorityLevel = currentPriorityLevel_DEPRECATED;
-  currentPriorityLevel_DEPRECATED = priorityLevel;
-
-  try {
-    return callback();
-  } finally {
-    currentPriorityLevel_DEPRECATED = previousPriorityLevel;
-  }
-}
-function unstable_wrapCallback(callback) {
-  var parentPriorityLevel = currentPriorityLevel_DEPRECATED;
-  return function () {
-    var previousPriorityLevel = currentPriorityLevel_DEPRECATED;
-    currentPriorityLevel_DEPRECATED = parentPriorityLevel;
-
-    try {
-      return callback();
-    } finally {
-      currentPriorityLevel_DEPRECATED = previousPriorityLevel;
-    }
-  };
-}
-function unstable_forceFrameRate() {}
-function unstable_pauseExecution() {}
-function unstable_continueExecution() {}
-function unstable_getFirstCallbackNode() {
-  return null;
-} // Currently no profiling build
-
-var unstable_Profiling = null;
-
-exports.unstable_IdlePriority = IdlePriority;
-exports.unstable_ImmediatePriority = ImmediatePriority;
-exports.unstable_LowPriority = LowPriority;
-exports.unstable_NormalPriority = NormalPriority;
-exports.unstable_Profiling = unstable_Profiling;
-exports.unstable_UserBlockingPriority = UserBlockingPriority;
-exports.unstable_cancelCallback = unstable_cancelCallback;
-exports.unstable_continueExecution = unstable_continueExecution;
-exports.unstable_forceFrameRate = unstable_forceFrameRate;
-exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
-exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
-exports.unstable_next = unstable_next;
-exports.unstable_now = unstable_now;
-exports.unstable_pauseExecution = unstable_pauseExecution;
-exports.unstable_requestPaint = unstable_requestPaint;
-exports.unstable_runWithPriority = unstable_runWithPriority;
-exports.unstable_scheduleCallback = unstable_scheduleCallback;
-exports.unstable_shouldYield = unstable_shouldYield;
-exports.unstable_wrapCallback = unstable_wrapCallback;
-  })();
-}
diff --git a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_post_task.production.min.js b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_post_task.production.min.js
deleted file mode 100644
index 388a1b9225043..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler-unstable_post_task.production.min.js
+++ /dev/null
@@ -1,13 +0,0 @@
-/** @license React v0.20.1
- * scheduler-unstable_post_task.production.min.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-'use strict';var a=window.performance,g=window.setTimeout,h=global.scheduler,k=a.now.bind(a),l=0,m=3;function p(c,d,b,f){l=k()+5;try{m=c;var e=f(!1);if("function"===typeof e){var n=new TaskController,r={priority:d,signal:n.signal};b._controller=n;h.postTask(p.bind(null,c,d,b,e),r).catch(q)}}catch(t){g(function(){throw t;})}finally{m=3}}function q(){}exports.unstable_IdlePriority=5;exports.unstable_ImmediatePriority=1;exports.unstable_LowPriority=4;exports.unstable_NormalPriority=3;
-exports.unstable_Profiling=null;exports.unstable_UserBlockingPriority=2;exports.unstable_cancelCallback=function(c){c._controller.abort()};exports.unstable_continueExecution=function(){};exports.unstable_forceFrameRate=function(){};exports.unstable_getCurrentPriorityLevel=function(){return m};exports.unstable_getFirstCallbackNode=function(){return null};exports.unstable_next=function(c){switch(m){case 1:case 2:case 3:var d=3;break;default:d=m}var b=m;m=d;try{return c()}finally{m=b}};
-exports.unstable_now=k;exports.unstable_pauseExecution=function(){};exports.unstable_requestPaint=function(){};exports.unstable_runWithPriority=function(c,d){var b=m;m=c;try{return d()}finally{m=b}};
-exports.unstable_scheduleCallback=function(c,d,b){switch(c){case 1:case 2:var f="user-blocking";break;case 4:case 3:f="user-visible";break;case 5:f="background";break;default:f="user-visible"}var e=new TaskController;b={priority:f,delay:"object"===typeof b&&null!==b?b.delay:0,signal:e.signal};e={_controller:e};h.postTask(p.bind(null,c,f,e,d),b).catch(q);return e};exports.unstable_shouldYield=function(){return k()>=l};
-exports.unstable_wrapCallback=function(c){var d=m;return function(){var b=m;m=d;try{return c()}finally{m=b}}};
diff --git a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler.development.js b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler.development.js
deleted file mode 100644
index 1ca8c952c80a6..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler.development.js
+++ /dev/null
@@ -1,845 +0,0 @@
-/** @license React v0.20.1
- * scheduler.development.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-'use strict';
-
-console.log('WRONG')
-if (process.env.NODE_ENV !== "production") {
-  (function() {
-'use strict';
-
-var enableSchedulerDebugging = false;
-var enableProfiling = true;
-
-var requestHostCallback;
-var requestHostTimeout;
-var cancelHostTimeout;
-var requestPaint;
-var hasPerformanceNow = typeof performance === 'object' && typeof performance.now === 'function';
-
-if (hasPerformanceNow) {
-  var localPerformance = performance;
-
-  exports.unstable_now = function () {
-    return localPerformance.now();
-  };
-} else {
-  var localDate = Date;
-  var initialTime = localDate.now();
-
-  exports.unstable_now = function () {
-    return localDate.now() - initialTime;
-  };
-}
-
-if ( // If Scheduler runs in a non-DOM environment, it falls back to a naive
-// implementation using setTimeout.
-typeof window === 'undefined' || // Check if MessageChannel is supported, too.
-typeof MessageChannel !== 'function') {
-  // If this accidentally gets imported in a non-browser environment, e.g. JavaScriptCore,
-  // fallback to a naive implementation.
-  var _callback = null;
-  var _timeoutID = null;
-
-  var _flushCallback = function () {
-    if (_callback !== null) {
-      try {
-        var currentTime = exports.unstable_now();
-        var hasRemainingTime = true;
-
-        _callback(hasRemainingTime, currentTime);
-
-        _callback = null;
-      } catch (e) {
-        setTimeout(_flushCallback, 0);
-        throw e;
-      }
-    }
-  };
-
-  requestHostCallback = function (cb) {
-    if (_callback !== null) {
-      // Protect against re-entrancy.
-      setTimeout(requestHostCallback, 0, cb);
-    } else {
-      _callback = cb;
-      setTimeout(_flushCallback, 0);
-    }
-  };
-
-  requestHostTimeout = function (cb, ms) {
-    _timeoutID = setTimeout(cb, ms);
-  };
-
-  cancelHostTimeout = function () {
-    clearTimeout(_timeoutID);
-  };
-
-  exports.unstable_shouldYield = function () {
-    return false;
-  };
-
-  requestPaint = exports.unstable_forceFrameRate = function () {};
-} else {
-  // Capture local references to native APIs, in case a polyfill overrides them.
-  var _setTimeout = window.setTimeout;
-  var _clearTimeout = window.clearTimeout;
-
-  if (typeof console !== 'undefined') {
-    // TODO: Scheduler no longer requires these methods to be polyfilled. But
-    // maybe we want to continue warning if they don't exist, to preserve the
-    // option to rely on it in the future?
-    var requestAnimationFrame = window.requestAnimationFrame;
-    var cancelAnimationFrame = window.cancelAnimationFrame;
-
-    if (typeof requestAnimationFrame !== 'function') {
-      // Using console['error'] to evade Babel and ESLint
-      console['error']("This browser doesn't support requestAnimationFrame. " + 'Make sure that you load a ' + 'polyfill in older browsers. https://reactjs.org/link/react-polyfills');
-    }
-
-    if (typeof cancelAnimationFrame !== 'function') {
-      // Using console['error'] to evade Babel and ESLint
-      console['error']("This browser doesn't support cancelAnimationFrame. " + 'Make sure that you load a ' + 'polyfill in older browsers. https://reactjs.org/link/react-polyfills');
-    }
-  }
-
-  var isMessageLoopRunning = false;
-  var scheduledHostCallback = null;
-  var taskTimeoutID = -1; // Scheduler periodically yields in case there is other work on the main
-  // thread, like user events. By default, it yields multiple times per frame.
-  // It does not attempt to align with frame boundaries, since most tasks don't
-  // need to be frame aligned; for those that do, use requestAnimationFrame.
-
-  var yieldInterval = 5;
-  var deadline = 0; // TODO: Make this configurable
-
-  {
-    // `isInputPending` is not available. Since we have no way of knowing if
-    // there's pending input, always yield at the end of the frame.
-    exports.unstable_shouldYield = function () {
-      return exports.unstable_now() >= deadline;
-    }; // Since we yield every frame regardless, `requestPaint` has no effect.
-
-
-    requestPaint = function () {};
-  }
-
-  exports.unstable_forceFrameRate = function (fps) {
-    if (fps < 0 || fps > 125) {
-      // Using console['error'] to evade Babel and ESLint
-      console['error']('forceFrameRate takes a positive int between 0 and 125, ' + 'forcing frame rates higher than 125 fps is not supported');
-      return;
-    }
-
-    if (fps > 0) {
-      yieldInterval = Math.floor(1000 / fps);
-    } else {
-      // reset the framerate
-      yieldInterval = 5;
-    }
-  };
-
-  var performWorkUntilDeadline = function () {
-    if (scheduledHostCallback !== null) {
-      var currentTime = exports.unstable_now(); // Yield after `yieldInterval` ms, regardless of where we are in the vsync
-      // cycle. This means there's always time remaining at the beginning of
-      // the message event.
-
-      deadline = currentTime + yieldInterval;
-      var hasTimeRemaining = true;
-
-      try {
-        var hasMoreWork = scheduledHostCallback(hasTimeRemaining, currentTime);
-
-        if (!hasMoreWork) {
-          isMessageLoopRunning = false;
-          scheduledHostCallback = null;
-        } else {
-          // If there's more work, schedule the next message event at the end
-          // of the preceding one.
-          port.postMessage(null);
-        }
-      } catch (error) {
-        // If a scheduler task throws, exit the current browser task so the
-        // error can be observed.
-        port.postMessage(null);
-        throw error;
-      }
-    } else {
-      isMessageLoopRunning = false;
-    } // Yielding to the browser will give it a chance to paint, so we can
-  };
-
-  var channel = new MessageChannel();
-  var port = channel.port2;
-  channel.port1.onmessage = performWorkUntilDeadline;
-
-  requestHostCallback = function (callback) {
-    scheduledHostCallback = callback;
-
-    if (!isMessageLoopRunning) {
-      isMessageLoopRunning = true;
-      port.postMessage(null);
-    }
-  };
-
-  requestHostTimeout = function (callback, ms) {
-    taskTimeoutID = _setTimeout(function () {
-      callback(exports.unstable_now());
-    }, ms);
-  };
-
-  cancelHostTimeout = function () {
-    _clearTimeout(taskTimeoutID);
-
-    taskTimeoutID = -1;
-  };
-}
-
-function push(heap, node) {
-  var index = heap.length;
-  heap.push(node);
-  siftUp(heap, node, index);
-}
-function peek(heap) {
-  var first = heap[0];
-  return first === undefined ? null : first;
-}
-function pop(heap) {
-  var first = heap[0];
-
-  if (first !== undefined) {
-    var last = heap.pop();
-
-    if (last !== first) {
-      heap[0] = last;
-      siftDown(heap, last, 0);
-    }
-
-    return first;
-  } else {
-    return null;
-  }
-}
-
-function siftUp(heap, node, i) {
-  var index = i;
-
-  while (true) {
-    var parentIndex = index - 1 >>> 1;
-    var parent = heap[parentIndex];
-
-    if (parent !== undefined && compare(parent, node) > 0) {
-      // The parent is larger. Swap positions.
-      heap[parentIndex] = node;
-      heap[index] = parent;
-      index = parentIndex;
-    } else {
-      // The parent is smaller. Exit.
-      return;
-    }
-  }
-}
-
-function siftDown(heap, node, i) {
-  var index = i;
-  var length = heap.length;
-
-  while (index < length) {
-    var leftIndex = (index + 1) * 2 - 1;
-    var left = heap[leftIndex];
-    var rightIndex = leftIndex + 1;
-    var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those.
-
-    if (left !== undefined && compare(left, node) < 0) {
-      if (right !== undefined && compare(right, left) < 0) {
-        heap[index] = right;
-        heap[rightIndex] = node;
-        index = rightIndex;
-      } else {
-        heap[index] = left;
-        heap[leftIndex] = node;
-        index = leftIndex;
-      }
-    } else if (right !== undefined && compare(right, node) < 0) {
-      heap[index] = right;
-      heap[rightIndex] = node;
-      index = rightIndex;
-    } else {
-      // Neither child is smaller. Exit.
-      return;
-    }
-  }
-}
-
-function compare(a, b) {
-  // Compare sort index first, then task id.
-  var diff = a.sortIndex - b.sortIndex;
-  return diff !== 0 ? diff : a.id - b.id;
-}
-
-// TODO: Use symbols?
-var NoPriority = 0;
-var ImmediatePriority = 1;
-var UserBlockingPriority = 2;
-var NormalPriority = 3;
-var LowPriority = 4;
-var IdlePriority = 5;
-
-var runIdCounter = 0;
-var mainThreadIdCounter = 0;
-var profilingStateSize = 4;
-var sharedProfilingBuffer =  // $FlowFixMe Flow doesn't know about SharedArrayBuffer
-typeof SharedArrayBuffer === 'function' ? new SharedArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : // $FlowFixMe Flow doesn't know about ArrayBuffer
-typeof ArrayBuffer === 'function' ? new ArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : null // Don't crash the init path on IE9
-;
-var profilingState =  sharedProfilingBuffer !== null ? new Int32Array(sharedProfilingBuffer) : []; // We can't read this but it helps save bytes for null checks
-
-var PRIORITY = 0;
-var CURRENT_TASK_ID = 1;
-var CURRENT_RUN_ID = 2;
-var QUEUE_SIZE = 3;
-
-{
-  profilingState[PRIORITY] = NoPriority; // This is maintained with a counter, because the size of the priority queue
-  // array might include canceled tasks.
-
-  profilingState[QUEUE_SIZE] = 0;
-  profilingState[CURRENT_TASK_ID] = 0;
-} // Bytes per element is 4
-
-
-var INITIAL_EVENT_LOG_SIZE = 131072;
-var MAX_EVENT_LOG_SIZE = 524288; // Equivalent to 2 megabytes
-
-var eventLogSize = 0;
-var eventLogBuffer = null;
-var eventLog = null;
-var eventLogIndex = 0;
-var TaskStartEvent = 1;
-var TaskCompleteEvent = 2;
-var TaskErrorEvent = 3;
-var TaskCancelEvent = 4;
-var TaskRunEvent = 5;
-var TaskYieldEvent = 6;
-var SchedulerSuspendEvent = 7;
-var SchedulerResumeEvent = 8;
-
-function logEvent(entries) {
-  if (eventLog !== null) {
-    var offset = eventLogIndex;
-    eventLogIndex += entries.length;
-
-    if (eventLogIndex + 1 > eventLogSize) {
-      eventLogSize *= 2;
-
-      if (eventLogSize > MAX_EVENT_LOG_SIZE) {
-        // Using console['error'] to evade Babel and ESLint
-        console['error']("Scheduler Profiling: Event log exceeded maximum size. Don't " + 'forget to call `stopLoggingProfilingEvents()`.');
-        stopLoggingProfilingEvents();
-        return;
-      }
-
-      var newEventLog = new Int32Array(eventLogSize * 4);
-      newEventLog.set(eventLog);
-      eventLogBuffer = newEventLog.buffer;
-      eventLog = newEventLog;
-    }
-
-    eventLog.set(entries, offset);
-  }
-}
-
-function startLoggingProfilingEvents() {
-  eventLogSize = INITIAL_EVENT_LOG_SIZE;
-  eventLogBuffer = new ArrayBuffer(eventLogSize * 4);
-  eventLog = new Int32Array(eventLogBuffer);
-  eventLogIndex = 0;
-}
-function stopLoggingProfilingEvents() {
-  var buffer = eventLogBuffer;
-  eventLogSize = 0;
-  eventLogBuffer = null;
-  eventLog = null;
-  eventLogIndex = 0;
-  return buffer;
-}
-function markTaskStart(task, ms) {
-  {
-    profilingState[QUEUE_SIZE]++;
-
-    if (eventLog !== null) {
-      // performance.now returns a float, representing milliseconds. When the
-      // event is logged, it's coerced to an int. Convert to microseconds to
-      // maintain extra degrees of precision.
-      logEvent([TaskStartEvent, ms * 1000, task.id, task.priorityLevel]);
-    }
-  }
-}
-function markTaskCompleted(task, ms) {
-  {
-    profilingState[PRIORITY] = NoPriority;
-    profilingState[CURRENT_TASK_ID] = 0;
-    profilingState[QUEUE_SIZE]--;
-
-    if (eventLog !== null) {
-      logEvent([TaskCompleteEvent, ms * 1000, task.id]);
-    }
-  }
-}
-function markTaskCanceled(task, ms) {
-  {
-    profilingState[QUEUE_SIZE]--;
-
-    if (eventLog !== null) {
-      logEvent([TaskCancelEvent, ms * 1000, task.id]);
-    }
-  }
-}
-function markTaskErrored(task, ms) {
-  {
-    profilingState[PRIORITY] = NoPriority;
-    profilingState[CURRENT_TASK_ID] = 0;
-    profilingState[QUEUE_SIZE]--;
-
-    if (eventLog !== null) {
-      logEvent([TaskErrorEvent, ms * 1000, task.id]);
-    }
-  }
-}
-function markTaskRun(task, ms) {
-  {
-    runIdCounter++;
-    profilingState[PRIORITY] = task.priorityLevel;
-    profilingState[CURRENT_TASK_ID] = task.id;
-    profilingState[CURRENT_RUN_ID] = runIdCounter;
-
-    if (eventLog !== null) {
-      logEvent([TaskRunEvent, ms * 1000, task.id, runIdCounter]);
-    }
-  }
-}
-function markTaskYield(task, ms) {
-  {
-    profilingState[PRIORITY] = NoPriority;
-    profilingState[CURRENT_TASK_ID] = 0;
-    profilingState[CURRENT_RUN_ID] = 0;
-
-    if (eventLog !== null) {
-      logEvent([TaskYieldEvent, ms * 1000, task.id, runIdCounter]);
-    }
-  }
-}
-function markSchedulerSuspended(ms) {
-  {
-    mainThreadIdCounter++;
-
-    if (eventLog !== null) {
-      logEvent([SchedulerSuspendEvent, ms * 1000, mainThreadIdCounter]);
-    }
-  }
-}
-function markSchedulerUnsuspended(ms) {
-  {
-    if (eventLog !== null) {
-      logEvent([SchedulerResumeEvent, ms * 1000, mainThreadIdCounter]);
-    }
-  }
-}
-
-/* eslint-disable no-var */
-// Math.pow(2, 30) - 1
-// 0b111111111111111111111111111111
-
-var maxSigned31BitInt = 1073741823; // Times out immediately
-
-var IMMEDIATE_PRIORITY_TIMEOUT = -1; // Eventually times out
-
-var USER_BLOCKING_PRIORITY_TIMEOUT = 250;
-var NORMAL_PRIORITY_TIMEOUT = 5000;
-var LOW_PRIORITY_TIMEOUT = 10000; // Never times out
-
-var IDLE_PRIORITY_TIMEOUT = maxSigned31BitInt; // Tasks are stored on a min heap
-
-var taskQueue = [];
-var timerQueue = []; // Incrementing id counter. Used to maintain insertion order.
-
-var taskIdCounter = 1; // Pausing the scheduler is useful for debugging.
-var currentTask = null;
-var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrancy.
-
-var isPerformingWork = false;
-var isHostCallbackScheduled = false;
-var isHostTimeoutScheduled = false;
-
-function advanceTimers(currentTime) {
-  // Check for tasks that are no longer delayed and add them to the queue.
-  var timer = peek(timerQueue);
-
-  while (timer !== null) {
-    if (timer.callback === null) {
-      // Timer was cancelled.
-      pop(timerQueue);
-    } else if (timer.startTime <= currentTime) {
-      // Timer fired. Transfer to the task queue.
-      pop(timerQueue);
-      timer.sortIndex = timer.expirationTime;
-      push(taskQueue, timer);
-
-      {
-        markTaskStart(timer, currentTime);
-        timer.isQueued = true;
-      }
-    } else {
-      // Remaining timers are pending.
-      return;
-    }
-
-    timer = peek(timerQueue);
-  }
-}
-
-function handleTimeout(currentTime) {
-  isHostTimeoutScheduled = false;
-  advanceTimers(currentTime);
-
-  if (!isHostCallbackScheduled) {
-    if (peek(taskQueue) !== null) {
-      isHostCallbackScheduled = true;
-      requestHostCallback(flushWork);
-    } else {
-      var firstTimer = peek(timerQueue);
-
-      if (firstTimer !== null) {
-        requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
-      }
-    }
-  }
-}
-
-function flushWork(hasTimeRemaining, initialTime) {
-  {
-    markSchedulerUnsuspended(initialTime);
-  } // We'll need a host callback the next time work is scheduled.
-
-
-  isHostCallbackScheduled = false;
-
-  if (isHostTimeoutScheduled) {
-    // We scheduled a timeout but it's no longer needed. Cancel it.
-    isHostTimeoutScheduled = false;
-    cancelHostTimeout();
-  }
-
-  isPerformingWork = true;
-  var previousPriorityLevel = currentPriorityLevel;
-
-  try {
-    if (enableProfiling) {
-      try {
-        return workLoop(hasTimeRemaining, initialTime);
-      } catch (error) {
-        if (currentTask !== null) {
-          var currentTime = exports.unstable_now();
-          markTaskErrored(currentTask, currentTime);
-          currentTask.isQueued = false;
-        }
-
-        throw error;
-      }
-    } else {
-      // No catch in prod code path.
-      return workLoop(hasTimeRemaining, initialTime);
-    }
-  } finally {
-    currentTask = null;
-    currentPriorityLevel = previousPriorityLevel;
-    isPerformingWork = false;
-
-    {
-      var _currentTime = exports.unstable_now();
-
-      markSchedulerSuspended(_currentTime);
-    }
-  }
-}
-
-function workLoop(hasTimeRemaining, initialTime) {
-  var currentTime = initialTime;
-  advanceTimers(currentTime);
-  currentTask = peek(taskQueue);
-
-  while (currentTask !== null && !(enableSchedulerDebugging )) {
-    if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || exports.unstable_shouldYield())) {
-      // This currentTask hasn't expired, and we've reached the deadline.
-      break;
-    }
-
-    var callback = currentTask.callback;
-
-    if (typeof callback === 'function') {
-      currentTask.callback = null;
-      currentPriorityLevel = currentTask.priorityLevel;
-      var didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
-      markTaskRun(currentTask, currentTime);
-      var continuationCallback = callback(didUserCallbackTimeout);
-      currentTime = exports.unstable_now();
-
-      if (typeof continuationCallback === 'function') {
-        currentTask.callback = continuationCallback;
-        markTaskYield(currentTask, currentTime);
-      } else {
-        {
-          markTaskCompleted(currentTask, currentTime);
-          currentTask.isQueued = false;
-        }
-
-        if (currentTask === peek(taskQueue)) {
-          pop(taskQueue);
-        }
-      }
-
-      advanceTimers(currentTime);
-    } else {
-      pop(taskQueue);
-    }
-
-    currentTask = peek(taskQueue);
-  } // Return whether there's additional work
-
-
-  if (currentTask !== null) {
-    return true;
-  } else {
-    var firstTimer = peek(timerQueue);
-
-    if (firstTimer !== null) {
-      requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
-    }
-
-    return false;
-  }
-}
-
-function unstable_runWithPriority(priorityLevel, eventHandler) {
-  switch (priorityLevel) {
-    case ImmediatePriority:
-    case UserBlockingPriority:
-    case NormalPriority:
-    case LowPriority:
-    case IdlePriority:
-      break;
-
-    default:
-      priorityLevel = NormalPriority;
-  }
-
-  var previousPriorityLevel = currentPriorityLevel;
-  currentPriorityLevel = priorityLevel;
-
-  try {
-    return eventHandler();
-  } finally {
-    currentPriorityLevel = previousPriorityLevel;
-  }
-}
-
-function unstable_next(eventHandler) {
-  var priorityLevel;
-
-  switch (currentPriorityLevel) {
-    case ImmediatePriority:
-    case UserBlockingPriority:
-    case NormalPriority:
-      // Shift down to normal priority
-      priorityLevel = NormalPriority;
-      break;
-
-    default:
-      // Anything lower than normal priority should remain at the current level.
-      priorityLevel = currentPriorityLevel;
-      break;
-  }
-
-  var previousPriorityLevel = currentPriorityLevel;
-  currentPriorityLevel = priorityLevel;
-
-  try {
-    return eventHandler();
-  } finally {
-    currentPriorityLevel = previousPriorityLevel;
-  }
-}
-
-function unstable_wrapCallback(callback) {
-  var parentPriorityLevel = currentPriorityLevel;
-  return function () {
-    // This is a fork of runWithPriority, inlined for performance.
-    var previousPriorityLevel = currentPriorityLevel;
-    currentPriorityLevel = parentPriorityLevel;
-
-    try {
-      return callback.apply(this, arguments);
-    } finally {
-      currentPriorityLevel = previousPriorityLevel;
-    }
-  };
-}
-
-function unstable_scheduleCallback(priorityLevel, callback, options) {
-  var currentTime = exports.unstable_now();
-  var startTime;
-
-  if (typeof options === 'object' && options !== null) {
-    var delay = options.delay;
-
-    if (typeof delay === 'number' && delay > 0) {
-      startTime = currentTime + delay;
-    } else {
-      startTime = currentTime;
-    }
-  } else {
-    startTime = currentTime;
-  }
-
-  var timeout;
-
-  switch (priorityLevel) {
-    case ImmediatePriority:
-      timeout = IMMEDIATE_PRIORITY_TIMEOUT;
-      break;
-
-    case UserBlockingPriority:
-      timeout = USER_BLOCKING_PRIORITY_TIMEOUT;
-      break;
-
-    case IdlePriority:
-      timeout = IDLE_PRIORITY_TIMEOUT;
-      break;
-
-    case LowPriority:
-      timeout = LOW_PRIORITY_TIMEOUT;
-      break;
-
-    case NormalPriority:
-    default:
-      timeout = NORMAL_PRIORITY_TIMEOUT;
-      break;
-  }
-
-  var expirationTime = startTime + timeout;
-  var newTask = {
-    id: taskIdCounter++,
-    callback: callback,
-    priorityLevel: priorityLevel,
-    startTime: startTime,
-    expirationTime: expirationTime,
-    sortIndex: -1
-  };
-
-  {
-    newTask.isQueued = false;
-  }
-
-  if (startTime > currentTime) {
-    // This is a delayed task.
-    newTask.sortIndex = startTime;
-    push(timerQueue, newTask);
-
-    if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
-      // All tasks are delayed, and this is the task with the earliest delay.
-      if (isHostTimeoutScheduled) {
-        // Cancel an existing timeout.
-        cancelHostTimeout();
-      } else {
-        isHostTimeoutScheduled = true;
-      } // Schedule a timeout.
-
-
-      requestHostTimeout(handleTimeout, startTime - currentTime);
-    }
-  } else {
-    newTask.sortIndex = expirationTime;
-    push(taskQueue, newTask);
-
-    {
-      markTaskStart(newTask, currentTime);
-      newTask.isQueued = true;
-    } // Schedule a host callback, if needed. If we're already performing work,
-    // wait until the next time we yield.
-
-
-    if (!isHostCallbackScheduled && !isPerformingWork) {
-      isHostCallbackScheduled = true;
-      requestHostCallback(flushWork);
-    }
-  }
-
-  return newTask;
-}
-
-function unstable_pauseExecution() {
-}
-
-function unstable_continueExecution() {
-
-  if (!isHostCallbackScheduled && !isPerformingWork) {
-    isHostCallbackScheduled = true;
-    requestHostCallback(flushWork);
-  }
-}
-
-function unstable_getFirstCallbackNode() {
-  return peek(taskQueue);
-}
-
-function unstable_cancelCallback(task) {
-  {
-    if (task.isQueued) {
-      var currentTime = exports.unstable_now();
-      markTaskCanceled(task, currentTime);
-      task.isQueued = false;
-    }
-  } // Null out the callback to indicate the task has been canceled. (Can't
-  // remove from the queue because you can't remove arbitrary nodes from an
-  // array based heap, only the first one.)
-
-
-  task.callback = null;
-}
-
-function unstable_getCurrentPriorityLevel() {
-  return currentPriorityLevel;
-}
-
-var unstable_requestPaint = requestPaint;
-var unstable_Profiling =  {
-  startLoggingProfilingEvents: startLoggingProfilingEvents,
-  stopLoggingProfilingEvents: stopLoggingProfilingEvents,
-  sharedProfilingBuffer: sharedProfilingBuffer
-} ;
-
-exports.unstable_IdlePriority = IdlePriority;
-exports.unstable_ImmediatePriority = ImmediatePriority;
-exports.unstable_LowPriority = LowPriority;
-exports.unstable_NormalPriority = NormalPriority;
-exports.unstable_Profiling = unstable_Profiling;
-exports.unstable_UserBlockingPriority = UserBlockingPriority;
-exports.unstable_cancelCallback = unstable_cancelCallback;
-exports.unstable_continueExecution = unstable_continueExecution;
-exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
-exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
-exports.unstable_next = unstable_next;
-exports.unstable_pauseExecution = unstable_pauseExecution;
-exports.unstable_requestPaint = unstable_requestPaint;
-exports.unstable_runWithPriority = unstable_runWithPriority;
-exports.unstable_scheduleCallback = unstable_scheduleCallback;
-exports.unstable_wrapCallback = unstable_wrapCallback;
-  })();
-}
diff --git a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler.production.min.js b/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler.production.min.js
deleted file mode 100644
index 904ed26e322dc..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/cjs/scheduler.production.min.js
+++ /dev/null
@@ -1,20 +0,0 @@
-/** @license React v0.20.1
- * scheduler.production.min.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-'use strict';var f,g,h,k;if("object"===typeof performance&&"function"===typeof performance.now){var l=performance;exports.unstable_now=function(){return l.now()}}else{var p=Date,q=p.now();exports.unstable_now=function(){return p.now()-q}}
-if("undefined"===typeof window||"function"!==typeof MessageChannel){var t=null,u=null,w=function(){if(null!==t)try{var a=exports.unstable_now();t(!0,a);t=null}catch(b){throw setTimeout(w,0),b;}};f=function(a){null!==t?setTimeout(f,0,a):(t=a,setTimeout(w,0))};g=function(a,b){u=setTimeout(a,b)};h=function(){clearTimeout(u)};exports.unstable_shouldYield=function(){return!1};k=exports.unstable_forceFrameRate=function(){}}else{var x=window.setTimeout,y=window.clearTimeout;if("undefined"!==typeof console){var z=
-window.cancelAnimationFrame;"function"!==typeof window.requestAnimationFrame&&console.error("This browser doesn't support requestAnimationFrame. Make sure that you load a polyfill in older browsers. https://reactjs.org/link/react-polyfills");"function"!==typeof z&&console.error("This browser doesn't support cancelAnimationFrame. Make sure that you load a polyfill in older browsers. https://reactjs.org/link/react-polyfills")}var A=!1,B=null,C=-1,D=5,E=0;exports.unstable_shouldYield=function(){return exports.unstable_now()>=
-E};k=function(){};exports.unstable_forceFrameRate=function(a){0>a||125<a?console.error("forceFrameRate takes a positive int between 0 and 125, forcing frame rates higher than 125 fps is not supported"):D=0<a?Math.floor(1E3/a):5};var F=new MessageChannel,G=F.port2;F.port1.onmessage=function(){if(null!==B){var a=exports.unstable_now();E=a+D;try{B(!0,a)?G.postMessage(null):(A=!1,B=null)}catch(b){throw G.postMessage(null),b;}}else A=!1};f=function(a){B=a;A||(A=!0,G.postMessage(null))};g=function(a,b){C=
-x(function(){a(exports.unstable_now())},b)};h=function(){y(C);C=-1}}function H(a,b){var c=a.length;a.push(b);a:for(;;){var d=c-1>>>1,e=a[d];if(void 0!==e&&0<I(e,b))a[d]=b,a[c]=e,c=d;else break a}}function J(a){a=a[0];return void 0===a?null:a}
-function K(a){var b=a[0];if(void 0!==b){var c=a.pop();if(c!==b){a[0]=c;a:for(var d=0,e=a.length;d<e;){var m=2*(d+1)-1,n=a[m],v=m+1,r=a[v];if(void 0!==n&&0>I(n,c))void 0!==r&&0>I(r,n)?(a[d]=r,a[v]=c,d=v):(a[d]=n,a[m]=c,d=m);else if(void 0!==r&&0>I(r,c))a[d]=r,a[v]=c,d=v;else break a}}return b}return null}function I(a,b){var c=a.sortIndex-b.sortIndex;return 0!==c?c:a.id-b.id}var L=[],M=[],N=1,O=null,P=3,Q=!1,R=!1,S=!1;
-function T(a){for(var b=J(M);null!==b;){if(null===b.callback)K(M);else if(b.startTime<=a)K(M),b.sortIndex=b.expirationTime,H(L,b);else break;b=J(M)}}function U(a){S=!1;T(a);if(!R)if(null!==J(L))R=!0,f(V);else{var b=J(M);null!==b&&g(U,b.startTime-a)}}
-function V(a,b){R=!1;S&&(S=!1,h());Q=!0;var c=P;try{T(b);for(O=J(L);null!==O&&(!(O.expirationTime>b)||a&&!exports.unstable_shouldYield());){var d=O.callback;if("function"===typeof d){O.callback=null;P=O.priorityLevel;var e=d(O.expirationTime<=b);b=exports.unstable_now();"function"===typeof e?O.callback=e:O===J(L)&&K(L);T(b)}else K(L);O=J(L)}if(null!==O)var m=!0;else{var n=J(M);null!==n&&g(U,n.startTime-b);m=!1}return m}finally{O=null,P=c,Q=!1}}var W=k;exports.unstable_IdlePriority=5;
-exports.unstable_ImmediatePriority=1;exports.unstable_LowPriority=4;exports.unstable_NormalPriority=3;exports.unstable_Profiling=null;exports.unstable_UserBlockingPriority=2;exports.unstable_cancelCallback=function(a){a.callback=null};exports.unstable_continueExecution=function(){R||Q||(R=!0,f(V))};exports.unstable_getCurrentPriorityLevel=function(){return P};exports.unstable_getFirstCallbackNode=function(){return J(L)};
-exports.unstable_next=function(a){switch(P){case 1:case 2:case 3:var b=3;break;default:b=P}var c=P;P=b;try{return a()}finally{P=c}};exports.unstable_pauseExecution=function(){};exports.unstable_requestPaint=W;exports.unstable_runWithPriority=function(a,b){switch(a){case 1:case 2:case 3:case 4:case 5:break;default:a=3}var c=P;P=a;try{return b()}finally{P=c}};
-exports.unstable_scheduleCallback=function(a,b,c){var d=exports.unstable_now();"object"===typeof c&&null!==c?(c=c.delay,c="number"===typeof c&&0<c?d+c:d):c=d;switch(a){case 1:var e=-1;break;case 2:e=250;break;case 5:e=1073741823;break;case 4:e=1E4;break;default:e=5E3}e=c+e;a={id:N++,callback:b,priorityLevel:a,startTime:c,expirationTime:e,sortIndex:-1};c>d?(a.sortIndex=c,H(M,a),null===J(L)&&a===J(M)&&(S?h():S=!0,g(U,c-d))):(a.sortIndex=e,H(L,a),R||Q||(R=!0,f(V)));return a};
-exports.unstable_wrapCallback=function(a){var b=P;return function(){var c=P;P=b;try{return a.apply(this,arguments)}finally{P=c}}};
diff --git a/fixtures/tests/schedulers/stable/scheduler/index.js b/fixtures/tests/schedulers/stable/scheduler/index.js
deleted file mode 100644
index 77770b0c219e2..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/index.js
+++ /dev/null
@@ -1,7 +0,0 @@
-'use strict';
-
-if (process.env.NODE_ENV === 'production') {
-  module.exports = require('./cjs/scheduler.production.min.js');
-} else {
-  module.exports = require('./cjs/scheduler.development.js');
-}
diff --git a/fixtures/tests/schedulers/stable/scheduler/tracing-profiling.js b/fixtures/tests/schedulers/stable/scheduler/tracing-profiling.js
deleted file mode 100644
index cb2d20c025226..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/tracing-profiling.js
+++ /dev/null
@@ -1,7 +0,0 @@
-'use strict';
-
-if (process.env.NODE_ENV === 'production') {
-  module.exports = require('./cjs/scheduler-tracing.profiling.min.js');
-} else {
-  module.exports = require('./cjs/scheduler-tracing.development.js');
-}
diff --git a/fixtures/tests/schedulers/stable/scheduler/tracing.js b/fixtures/tests/schedulers/stable/scheduler/tracing.js
deleted file mode 100644
index 1e318bd901b5d..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/tracing.js
+++ /dev/null
@@ -1,7 +0,0 @@
-'use strict';
-
-if (process.env.NODE_ENV === 'production') {
-  module.exports = require('./cjs/scheduler-tracing.production.min.js');
-} else {
-  module.exports = require('./cjs/scheduler-tracing.development.js');
-}
diff --git a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.development.js b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.development.js
deleted file mode 100644
index a81bf8fe2f98d..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.development.js
+++ /dev/null
@@ -1,80 +0,0 @@
-/**
- * @license React
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-'use strict';
-
-(function(global, factory) {
-  // eslint-disable-next-line no-unused-expressions
-  typeof exports === 'object' && typeof module !== 'undefined'
-    ? (module.exports = factory(require('react')))
-    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
-    ? define(['react'], factory) // eslint-disable-line no-undef
-    : (global.SchedulerTracing = factory(global));
-})(this, function(global) {
-  function unstable_clear() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_clear.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getCurrent() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getCurrent.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getThreadID() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getThreadID.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_subscribe() {
-    // eslint-disable-next-line max-len
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_subscribe.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_trace() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_trace.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_unsubscribe() {
-    // eslint-disable-next-line max-len
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_unsubscribe.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_wrap() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_wrap.apply(
-      this,
-      arguments
-    );
-  }
-
-  return Object.freeze({
-    unstable_clear: unstable_clear,
-    unstable_getCurrent: unstable_getCurrent,
-    unstable_getThreadID: unstable_getThreadID,
-    unstable_subscribe: unstable_subscribe,
-    unstable_trace: unstable_trace,
-    unstable_unsubscribe: unstable_unsubscribe,
-    unstable_wrap: unstable_wrap,
-  });
-});
diff --git a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.production.min.js b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.production.min.js
deleted file mode 100644
index a81bf8fe2f98d..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.production.min.js
+++ /dev/null
@@ -1,80 +0,0 @@
-/**
- * @license React
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-'use strict';
-
-(function(global, factory) {
-  // eslint-disable-next-line no-unused-expressions
-  typeof exports === 'object' && typeof module !== 'undefined'
-    ? (module.exports = factory(require('react')))
-    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
-    ? define(['react'], factory) // eslint-disable-line no-undef
-    : (global.SchedulerTracing = factory(global));
-})(this, function(global) {
-  function unstable_clear() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_clear.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getCurrent() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getCurrent.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getThreadID() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getThreadID.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_subscribe() {
-    // eslint-disable-next-line max-len
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_subscribe.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_trace() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_trace.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_unsubscribe() {
-    // eslint-disable-next-line max-len
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_unsubscribe.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_wrap() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_wrap.apply(
-      this,
-      arguments
-    );
-  }
-
-  return Object.freeze({
-    unstable_clear: unstable_clear,
-    unstable_getCurrent: unstable_getCurrent,
-    unstable_getThreadID: unstable_getThreadID,
-    unstable_subscribe: unstable_subscribe,
-    unstable_trace: unstable_trace,
-    unstable_unsubscribe: unstable_unsubscribe,
-    unstable_wrap: unstable_wrap,
-  });
-});
diff --git a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.profiling.min.js b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.profiling.min.js
deleted file mode 100644
index a81bf8fe2f98d..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-tracing.profiling.min.js
+++ /dev/null
@@ -1,80 +0,0 @@
-/**
- * @license React
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-'use strict';
-
-(function(global, factory) {
-  // eslint-disable-next-line no-unused-expressions
-  typeof exports === 'object' && typeof module !== 'undefined'
-    ? (module.exports = factory(require('react')))
-    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
-    ? define(['react'], factory) // eslint-disable-line no-undef
-    : (global.SchedulerTracing = factory(global));
-})(this, function(global) {
-  function unstable_clear() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_clear.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getCurrent() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getCurrent.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getThreadID() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getThreadID.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_subscribe() {
-    // eslint-disable-next-line max-len
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_subscribe.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_trace() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_trace.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_unsubscribe() {
-    // eslint-disable-next-line max-len
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_unsubscribe.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_wrap() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_wrap.apply(
-      this,
-      arguments
-    );
-  }
-
-  return Object.freeze({
-    unstable_clear: unstable_clear,
-    unstable_getCurrent: unstable_getCurrent,
-    unstable_getThreadID: unstable_getThreadID,
-    unstable_subscribe: unstable_subscribe,
-    unstable_trace: unstable_trace,
-    unstable_unsubscribe: unstable_unsubscribe,
-    unstable_wrap: unstable_wrap,
-  });
-});
diff --git a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-unstable_mock.development.js b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-unstable_mock.development.js
deleted file mode 100644
index 8f87b6e10c52d..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-unstable_mock.development.js
+++ /dev/null
@@ -1,862 +0,0 @@
-/** @license React v0.20.1
- * scheduler-unstable_mock.development.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-(function (global, factory) {
-  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
-  typeof define === 'function' && define.amd ? define(['exports'], factory) :
-  (global = global || self, factory(global.SchedulerMock = {}));
-}(this, (function (exports) { 'use strict';
-
-  var enableSchedulerDebugging = false;
-  var enableProfiling = true;
-
-  var currentTime = 0;
-  var scheduledCallback = null;
-  var scheduledTimeout = null;
-  var timeoutTime = -1;
-  var yieldedValues = null;
-  var expectedNumberOfYields = -1;
-  var didStop = false;
-  var isFlushing = false;
-  var needsPaint = false;
-  var shouldYieldForPaint = false;
-  function requestHostCallback(callback) {
-    scheduledCallback = callback;
-  }
-  function requestHostTimeout(callback, ms) {
-    scheduledTimeout = callback;
-    timeoutTime = currentTime + ms;
-  }
-  function cancelHostTimeout() {
-    scheduledTimeout = null;
-    timeoutTime = -1;
-  }
-  function shouldYieldToHost() {
-    if (expectedNumberOfYields !== -1 && yieldedValues !== null && yieldedValues.length >= expectedNumberOfYields || shouldYieldForPaint && needsPaint) {
-      // We yielded at least as many values as expected. Stop flushing.
-      didStop = true;
-      return true;
-    }
-
-    return false;
-  }
-  function getCurrentTime() {
-    return currentTime;
-  }
-  function forceFrameRate() {// No-op
-  }
-
-  function unstable_flushNumberOfYields(count) {
-    if (isFlushing) {
-      throw new Error('Already flushing work.');
-    }
-
-    if (scheduledCallback !== null) {
-      var cb = scheduledCallback;
-      expectedNumberOfYields = count;
-      isFlushing = true;
-
-      try {
-        var hasMoreWork = true;
-
-        do {
-          hasMoreWork = cb(true, currentTime);
-        } while (hasMoreWork && !didStop);
-
-        if (!hasMoreWork) {
-          scheduledCallback = null;
-        }
-      } finally {
-        expectedNumberOfYields = -1;
-        didStop = false;
-        isFlushing = false;
-      }
-    }
-  }
-  function unstable_flushUntilNextPaint() {
-    if (isFlushing) {
-      throw new Error('Already flushing work.');
-    }
-
-    if (scheduledCallback !== null) {
-      var cb = scheduledCallback;
-      shouldYieldForPaint = true;
-      needsPaint = false;
-      isFlushing = true;
-
-      try {
-        var hasMoreWork = true;
-
-        do {
-          hasMoreWork = cb(true, currentTime);
-        } while (hasMoreWork && !didStop);
-
-        if (!hasMoreWork) {
-          scheduledCallback = null;
-        }
-      } finally {
-        shouldYieldForPaint = false;
-        didStop = false;
-        isFlushing = false;
-      }
-    }
-  }
-  function unstable_flushExpired() {
-    if (isFlushing) {
-      throw new Error('Already flushing work.');
-    }
-
-    if (scheduledCallback !== null) {
-      isFlushing = true;
-
-      try {
-        var hasMoreWork = scheduledCallback(false, currentTime);
-
-        if (!hasMoreWork) {
-          scheduledCallback = null;
-        }
-      } finally {
-        isFlushing = false;
-      }
-    }
-  }
-  function unstable_flushAllWithoutAsserting() {
-    // Returns false if no work was flushed.
-    if (isFlushing) {
-      throw new Error('Already flushing work.');
-    }
-
-    if (scheduledCallback !== null) {
-      var cb = scheduledCallback;
-      isFlushing = true;
-
-      try {
-        var hasMoreWork = true;
-
-        do {
-          hasMoreWork = cb(true, currentTime);
-        } while (hasMoreWork);
-
-        if (!hasMoreWork) {
-          scheduledCallback = null;
-        }
-
-        return true;
-      } finally {
-        isFlushing = false;
-      }
-    } else {
-      return false;
-    }
-  }
-  function unstable_clearYields() {
-    if (yieldedValues === null) {
-      return [];
-    }
-
-    var values = yieldedValues;
-    yieldedValues = null;
-    return values;
-  }
-  function unstable_flushAll() {
-    if (yieldedValues !== null) {
-      throw new Error('Log is not empty. Assert on the log of yielded values before ' + 'flushing additional work.');
-    }
-
-    unstable_flushAllWithoutAsserting();
-
-    if (yieldedValues !== null) {
-      throw new Error('While flushing work, something yielded a value. Use an ' + 'assertion helper to assert on the log of yielded values, e.g. ' + 'expect(Scheduler).toFlushAndYield([...])');
-    }
-  }
-  function unstable_yieldValue(value) {
-    // eslint-disable-next-line react-internal/no-production-logging
-    if (console.log.name === 'disabledLog') {
-      // If console.log has been patched, we assume we're in render
-      // replaying and we ignore any values yielding in the second pass.
-      return;
-    }
-
-    if (yieldedValues === null) {
-      yieldedValues = [value];
-    } else {
-      yieldedValues.push(value);
-    }
-  }
-  function unstable_advanceTime(ms) {
-    // eslint-disable-next-line react-internal/no-production-logging
-    if (console.log.name === 'disabledLog') {
-      // If console.log has been patched, we assume we're in render
-      // replaying and we ignore any time advancing in the second pass.
-      return;
-    }
-
-    currentTime += ms;
-
-    if (scheduledTimeout !== null && timeoutTime <= currentTime) {
-      scheduledTimeout(currentTime);
-      timeoutTime = -1;
-      scheduledTimeout = null;
-    }
-  }
-  function requestPaint() {
-    needsPaint = true;
-  }
-
-  function push(heap, node) {
-    var index = heap.length;
-    heap.push(node);
-    siftUp(heap, node, index);
-  }
-  function peek(heap) {
-    var first = heap[0];
-    return first === undefined ? null : first;
-  }
-  function pop(heap) {
-    var first = heap[0];
-
-    if (first !== undefined) {
-      var last = heap.pop();
-
-      if (last !== first) {
-        heap[0] = last;
-        siftDown(heap, last, 0);
-      }
-
-      return first;
-    } else {
-      return null;
-    }
-  }
-
-  function siftUp(heap, node, i) {
-    var index = i;
-
-    while (true) {
-      var parentIndex = index - 1 >>> 1;
-      var parent = heap[parentIndex];
-
-      if (parent !== undefined && compare(parent, node) > 0) {
-        // The parent is larger. Swap positions.
-        heap[parentIndex] = node;
-        heap[index] = parent;
-        index = parentIndex;
-      } else {
-        // The parent is smaller. Exit.
-        return;
-      }
-    }
-  }
-
-  function siftDown(heap, node, i) {
-    var index = i;
-    var length = heap.length;
-
-    while (index < length) {
-      var leftIndex = (index + 1) * 2 - 1;
-      var left = heap[leftIndex];
-      var rightIndex = leftIndex + 1;
-      var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those.
-
-      if (left !== undefined && compare(left, node) < 0) {
-        if (right !== undefined && compare(right, left) < 0) {
-          heap[index] = right;
-          heap[rightIndex] = node;
-          index = rightIndex;
-        } else {
-          heap[index] = left;
-          heap[leftIndex] = node;
-          index = leftIndex;
-        }
-      } else if (right !== undefined && compare(right, node) < 0) {
-        heap[index] = right;
-        heap[rightIndex] = node;
-        index = rightIndex;
-      } else {
-        // Neither child is smaller. Exit.
-        return;
-      }
-    }
-  }
-
-  function compare(a, b) {
-    // Compare sort index first, then task id.
-    var diff = a.sortIndex - b.sortIndex;
-    return diff !== 0 ? diff : a.id - b.id;
-  }
-
-  // TODO: Use symbols?
-  var NoPriority = 0;
-  var ImmediatePriority = 1;
-  var UserBlockingPriority = 2;
-  var NormalPriority = 3;
-  var LowPriority = 4;
-  var IdlePriority = 5;
-
-  var runIdCounter = 0;
-  var mainThreadIdCounter = 0;
-  var profilingStateSize = 4;
-  var sharedProfilingBuffer =  // $FlowFixMe Flow doesn't know about SharedArrayBuffer
-  typeof SharedArrayBuffer === 'function' ? new SharedArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : // $FlowFixMe Flow doesn't know about ArrayBuffer
-  typeof ArrayBuffer === 'function' ? new ArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : null // Don't crash the init path on IE9
-  ;
-  var profilingState =  sharedProfilingBuffer !== null ? new Int32Array(sharedProfilingBuffer) : []; // We can't read this but it helps save bytes for null checks
-
-  var PRIORITY = 0;
-  var CURRENT_TASK_ID = 1;
-  var CURRENT_RUN_ID = 2;
-  var QUEUE_SIZE = 3;
-
-  {
-    profilingState[PRIORITY] = NoPriority; // This is maintained with a counter, because the size of the priority queue
-    // array might include canceled tasks.
-
-    profilingState[QUEUE_SIZE] = 0;
-    profilingState[CURRENT_TASK_ID] = 0;
-  } // Bytes per element is 4
-
-
-  var INITIAL_EVENT_LOG_SIZE = 131072;
-  var MAX_EVENT_LOG_SIZE = 524288; // Equivalent to 2 megabytes
-
-  var eventLogSize = 0;
-  var eventLogBuffer = null;
-  var eventLog = null;
-  var eventLogIndex = 0;
-  var TaskStartEvent = 1;
-  var TaskCompleteEvent = 2;
-  var TaskErrorEvent = 3;
-  var TaskCancelEvent = 4;
-  var TaskRunEvent = 5;
-  var TaskYieldEvent = 6;
-  var SchedulerSuspendEvent = 7;
-  var SchedulerResumeEvent = 8;
-
-  function logEvent(entries) {
-    if (eventLog !== null) {
-      var offset = eventLogIndex;
-      eventLogIndex += entries.length;
-
-      if (eventLogIndex + 1 > eventLogSize) {
-        eventLogSize *= 2;
-
-        if (eventLogSize > MAX_EVENT_LOG_SIZE) {
-          // Using console['error'] to evade Babel and ESLint
-          console['error']("Scheduler Profiling: Event log exceeded maximum size. Don't " + 'forget to call `stopLoggingProfilingEvents()`.');
-          stopLoggingProfilingEvents();
-          return;
-        }
-
-        var newEventLog = new Int32Array(eventLogSize * 4);
-        newEventLog.set(eventLog);
-        eventLogBuffer = newEventLog.buffer;
-        eventLog = newEventLog;
-      }
-
-      eventLog.set(entries, offset);
-    }
-  }
-
-  function startLoggingProfilingEvents() {
-    eventLogSize = INITIAL_EVENT_LOG_SIZE;
-    eventLogBuffer = new ArrayBuffer(eventLogSize * 4);
-    eventLog = new Int32Array(eventLogBuffer);
-    eventLogIndex = 0;
-  }
-  function stopLoggingProfilingEvents() {
-    var buffer = eventLogBuffer;
-    eventLogSize = 0;
-    eventLogBuffer = null;
-    eventLog = null;
-    eventLogIndex = 0;
-    return buffer;
-  }
-  function markTaskStart(task, ms) {
-    {
-      profilingState[QUEUE_SIZE]++;
-
-      if (eventLog !== null) {
-        // performance.now returns a float, representing milliseconds. When the
-        // event is logged, it's coerced to an int. Convert to microseconds to
-        // maintain extra degrees of precision.
-        logEvent([TaskStartEvent, ms * 1000, task.id, task.priorityLevel]);
-      }
-    }
-  }
-  function markTaskCompleted(task, ms) {
-    {
-      profilingState[PRIORITY] = NoPriority;
-      profilingState[CURRENT_TASK_ID] = 0;
-      profilingState[QUEUE_SIZE]--;
-
-      if (eventLog !== null) {
-        logEvent([TaskCompleteEvent, ms * 1000, task.id]);
-      }
-    }
-  }
-  function markTaskCanceled(task, ms) {
-    {
-      profilingState[QUEUE_SIZE]--;
-
-      if (eventLog !== null) {
-        logEvent([TaskCancelEvent, ms * 1000, task.id]);
-      }
-    }
-  }
-  function markTaskErrored(task, ms) {
-    {
-      profilingState[PRIORITY] = NoPriority;
-      profilingState[CURRENT_TASK_ID] = 0;
-      profilingState[QUEUE_SIZE]--;
-
-      if (eventLog !== null) {
-        logEvent([TaskErrorEvent, ms * 1000, task.id]);
-      }
-    }
-  }
-  function markTaskRun(task, ms) {
-    {
-      runIdCounter++;
-      profilingState[PRIORITY] = task.priorityLevel;
-      profilingState[CURRENT_TASK_ID] = task.id;
-      profilingState[CURRENT_RUN_ID] = runIdCounter;
-
-      if (eventLog !== null) {
-        logEvent([TaskRunEvent, ms * 1000, task.id, runIdCounter]);
-      }
-    }
-  }
-  function markTaskYield(task, ms) {
-    {
-      profilingState[PRIORITY] = NoPriority;
-      profilingState[CURRENT_TASK_ID] = 0;
-      profilingState[CURRENT_RUN_ID] = 0;
-
-      if (eventLog !== null) {
-        logEvent([TaskYieldEvent, ms * 1000, task.id, runIdCounter]);
-      }
-    }
-  }
-  function markSchedulerSuspended(ms) {
-    {
-      mainThreadIdCounter++;
-
-      if (eventLog !== null) {
-        logEvent([SchedulerSuspendEvent, ms * 1000, mainThreadIdCounter]);
-      }
-    }
-  }
-  function markSchedulerUnsuspended(ms) {
-    {
-      if (eventLog !== null) {
-        logEvent([SchedulerResumeEvent, ms * 1000, mainThreadIdCounter]);
-      }
-    }
-  }
-
-  /* eslint-disable no-var */
-  // Math.pow(2, 30) - 1
-  // 0b111111111111111111111111111111
-
-  var maxSigned31BitInt = 1073741823; // Times out immediately
-
-  var IMMEDIATE_PRIORITY_TIMEOUT = -1; // Eventually times out
-
-  var USER_BLOCKING_PRIORITY_TIMEOUT = 250;
-  var NORMAL_PRIORITY_TIMEOUT = 5000;
-  var LOW_PRIORITY_TIMEOUT = 10000; // Never times out
-
-  var IDLE_PRIORITY_TIMEOUT = maxSigned31BitInt; // Tasks are stored on a min heap
-
-  var taskQueue = [];
-  var timerQueue = []; // Incrementing id counter. Used to maintain insertion order.
-
-  var taskIdCounter = 1; // Pausing the scheduler is useful for debugging.
-  var currentTask = null;
-  var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrancy.
-
-  var isPerformingWork = false;
-  var isHostCallbackScheduled = false;
-  var isHostTimeoutScheduled = false;
-
-  function advanceTimers(currentTime) {
-    // Check for tasks that are no longer delayed and add them to the queue.
-    var timer = peek(timerQueue);
-
-    while (timer !== null) {
-      if (timer.callback === null) {
-        // Timer was cancelled.
-        pop(timerQueue);
-      } else if (timer.startTime <= currentTime) {
-        // Timer fired. Transfer to the task queue.
-        pop(timerQueue);
-        timer.sortIndex = timer.expirationTime;
-        push(taskQueue, timer);
-
-        {
-          markTaskStart(timer, currentTime);
-          timer.isQueued = true;
-        }
-      } else {
-        // Remaining timers are pending.
-        return;
-      }
-
-      timer = peek(timerQueue);
-    }
-  }
-
-  function handleTimeout(currentTime) {
-    isHostTimeoutScheduled = false;
-    advanceTimers(currentTime);
-
-    if (!isHostCallbackScheduled) {
-      if (peek(taskQueue) !== null) {
-        isHostCallbackScheduled = true;
-        requestHostCallback(flushWork);
-      } else {
-        var firstTimer = peek(timerQueue);
-
-        if (firstTimer !== null) {
-          requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
-        }
-      }
-    }
-  }
-
-  function flushWork(hasTimeRemaining, initialTime) {
-    {
-      markSchedulerUnsuspended(initialTime);
-    } // We'll need a host callback the next time work is scheduled.
-
-
-    isHostCallbackScheduled = false;
-
-    if (isHostTimeoutScheduled) {
-      // We scheduled a timeout but it's no longer needed. Cancel it.
-      isHostTimeoutScheduled = false;
-      cancelHostTimeout();
-    }
-
-    isPerformingWork = true;
-    var previousPriorityLevel = currentPriorityLevel;
-
-    try {
-      if (enableProfiling) {
-        try {
-          return workLoop(hasTimeRemaining, initialTime);
-        } catch (error) {
-          if (currentTask !== null) {
-            var currentTime = getCurrentTime();
-            markTaskErrored(currentTask, currentTime);
-            currentTask.isQueued = false;
-          }
-
-          throw error;
-        }
-      } else {
-        // No catch in prod code path.
-        return workLoop(hasTimeRemaining, initialTime);
-      }
-    } finally {
-      currentTask = null;
-      currentPriorityLevel = previousPriorityLevel;
-      isPerformingWork = false;
-
-      {
-        var _currentTime = getCurrentTime();
-
-        markSchedulerSuspended(_currentTime);
-      }
-    }
-  }
-
-  function workLoop(hasTimeRemaining, initialTime) {
-    var currentTime = initialTime;
-    advanceTimers(currentTime);
-    currentTask = peek(taskQueue);
-
-    while (currentTask !== null && !(enableSchedulerDebugging )) {
-      if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost())) {
-        // This currentTask hasn't expired, and we've reached the deadline.
-        break;
-      }
-
-      var callback = currentTask.callback;
-
-      if (typeof callback === 'function') {
-        currentTask.callback = null;
-        currentPriorityLevel = currentTask.priorityLevel;
-        var didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
-        markTaskRun(currentTask, currentTime);
-        var continuationCallback = callback(didUserCallbackTimeout);
-        currentTime = getCurrentTime();
-
-        if (typeof continuationCallback === 'function') {
-          currentTask.callback = continuationCallback;
-          markTaskYield(currentTask, currentTime);
-        } else {
-          {
-            markTaskCompleted(currentTask, currentTime);
-            currentTask.isQueued = false;
-          }
-
-          if (currentTask === peek(taskQueue)) {
-            pop(taskQueue);
-          }
-        }
-
-        advanceTimers(currentTime);
-      } else {
-        pop(taskQueue);
-      }
-
-      currentTask = peek(taskQueue);
-    } // Return whether there's additional work
-
-
-    if (currentTask !== null) {
-      return true;
-    } else {
-      var firstTimer = peek(timerQueue);
-
-      if (firstTimer !== null) {
-        requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
-      }
-
-      return false;
-    }
-  }
-
-  function unstable_runWithPriority(priorityLevel, eventHandler) {
-    switch (priorityLevel) {
-      case ImmediatePriority:
-      case UserBlockingPriority:
-      case NormalPriority:
-      case LowPriority:
-      case IdlePriority:
-        break;
-
-      default:
-        priorityLevel = NormalPriority;
-    }
-
-    var previousPriorityLevel = currentPriorityLevel;
-    currentPriorityLevel = priorityLevel;
-
-    try {
-      return eventHandler();
-    } finally {
-      currentPriorityLevel = previousPriorityLevel;
-    }
-  }
-
-  function unstable_next(eventHandler) {
-    var priorityLevel;
-
-    switch (currentPriorityLevel) {
-      case ImmediatePriority:
-      case UserBlockingPriority:
-      case NormalPriority:
-        // Shift down to normal priority
-        priorityLevel = NormalPriority;
-        break;
-
-      default:
-        // Anything lower than normal priority should remain at the current level.
-        priorityLevel = currentPriorityLevel;
-        break;
-    }
-
-    var previousPriorityLevel = currentPriorityLevel;
-    currentPriorityLevel = priorityLevel;
-
-    try {
-      return eventHandler();
-    } finally {
-      currentPriorityLevel = previousPriorityLevel;
-    }
-  }
-
-  function unstable_wrapCallback(callback) {
-    var parentPriorityLevel = currentPriorityLevel;
-    return function () {
-      // This is a fork of runWithPriority, inlined for performance.
-      var previousPriorityLevel = currentPriorityLevel;
-      currentPriorityLevel = parentPriorityLevel;
-
-      try {
-        return callback.apply(this, arguments);
-      } finally {
-        currentPriorityLevel = previousPriorityLevel;
-      }
-    };
-  }
-
-  function unstable_scheduleCallback(priorityLevel, callback, options) {
-    var currentTime = getCurrentTime();
-    var startTime;
-
-    if (typeof options === 'object' && options !== null) {
-      var delay = options.delay;
-
-      if (typeof delay === 'number' && delay > 0) {
-        startTime = currentTime + delay;
-      } else {
-        startTime = currentTime;
-      }
-    } else {
-      startTime = currentTime;
-    }
-
-    var timeout;
-
-    switch (priorityLevel) {
-      case ImmediatePriority:
-        timeout = IMMEDIATE_PRIORITY_TIMEOUT;
-        break;
-
-      case UserBlockingPriority:
-        timeout = USER_BLOCKING_PRIORITY_TIMEOUT;
-        break;
-
-      case IdlePriority:
-        timeout = IDLE_PRIORITY_TIMEOUT;
-        break;
-
-      case LowPriority:
-        timeout = LOW_PRIORITY_TIMEOUT;
-        break;
-
-      case NormalPriority:
-      default:
-        timeout = NORMAL_PRIORITY_TIMEOUT;
-        break;
-    }
-
-    var expirationTime = startTime + timeout;
-    var newTask = {
-      id: taskIdCounter++,
-      callback: callback,
-      priorityLevel: priorityLevel,
-      startTime: startTime,
-      expirationTime: expirationTime,
-      sortIndex: -1
-    };
-
-    {
-      newTask.isQueued = false;
-    }
-
-    if (startTime > currentTime) {
-      // This is a delayed task.
-      newTask.sortIndex = startTime;
-      push(timerQueue, newTask);
-
-      if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
-        // All tasks are delayed, and this is the task with the earliest delay.
-        if (isHostTimeoutScheduled) {
-          // Cancel an existing timeout.
-          cancelHostTimeout();
-        } else {
-          isHostTimeoutScheduled = true;
-        } // Schedule a timeout.
-
-
-        requestHostTimeout(handleTimeout, startTime - currentTime);
-      }
-    } else {
-      newTask.sortIndex = expirationTime;
-      push(taskQueue, newTask);
-
-      {
-        markTaskStart(newTask, currentTime);
-        newTask.isQueued = true;
-      } // Schedule a host callback, if needed. If we're already performing work,
-      // wait until the next time we yield.
-
-
-      if (!isHostCallbackScheduled && !isPerformingWork) {
-        isHostCallbackScheduled = true;
-        requestHostCallback(flushWork);
-      }
-    }
-
-    return newTask;
-  }
-
-  function unstable_pauseExecution() {
-  }
-
-  function unstable_continueExecution() {
-
-    if (!isHostCallbackScheduled && !isPerformingWork) {
-      isHostCallbackScheduled = true;
-      requestHostCallback(flushWork);
-    }
-  }
-
-  function unstable_getFirstCallbackNode() {
-    return peek(taskQueue);
-  }
-
-  function unstable_cancelCallback(task) {
-    {
-      if (task.isQueued) {
-        var currentTime = getCurrentTime();
-        markTaskCanceled(task, currentTime);
-        task.isQueued = false;
-      }
-    } // Null out the callback to indicate the task has been canceled. (Can't
-    // remove from the queue because you can't remove arbitrary nodes from an
-    // array based heap, only the first one.)
-
-
-    task.callback = null;
-  }
-
-  function unstable_getCurrentPriorityLevel() {
-    return currentPriorityLevel;
-  }
-
-  var unstable_requestPaint = requestPaint;
-  var unstable_Profiling =  {
-    startLoggingProfilingEvents: startLoggingProfilingEvents,
-    stopLoggingProfilingEvents: stopLoggingProfilingEvents,
-    sharedProfilingBuffer: sharedProfilingBuffer
-  } ;
-
-  exports.unstable_IdlePriority = IdlePriority;
-  exports.unstable_ImmediatePriority = ImmediatePriority;
-  exports.unstable_LowPriority = LowPriority;
-  exports.unstable_NormalPriority = NormalPriority;
-  exports.unstable_Profiling = unstable_Profiling;
-  exports.unstable_UserBlockingPriority = UserBlockingPriority;
-  exports.unstable_advanceTime = unstable_advanceTime;
-  exports.unstable_cancelCallback = unstable_cancelCallback;
-  exports.unstable_clearYields = unstable_clearYields;
-  exports.unstable_continueExecution = unstable_continueExecution;
-  exports.unstable_flushAll = unstable_flushAll;
-  exports.unstable_flushAllWithoutAsserting = unstable_flushAllWithoutAsserting;
-  exports.unstable_flushExpired = unstable_flushExpired;
-  exports.unstable_flushNumberOfYields = unstable_flushNumberOfYields;
-  exports.unstable_flushUntilNextPaint = unstable_flushUntilNextPaint;
-  exports.unstable_forceFrameRate = forceFrameRate;
-  exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
-  exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
-  exports.unstable_next = unstable_next;
-  exports.unstable_now = getCurrentTime;
-  exports.unstable_pauseExecution = unstable_pauseExecution;
-  exports.unstable_requestPaint = unstable_requestPaint;
-  exports.unstable_runWithPriority = unstable_runWithPriority;
-  exports.unstable_scheduleCallback = unstable_scheduleCallback;
-  exports.unstable_shouldYield = shouldYieldToHost;
-  exports.unstable_wrapCallback = unstable_wrapCallback;
-  exports.unstable_yieldValue = unstable_yieldValue;
-
-})));
diff --git a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-unstable_mock.production.min.js b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-unstable_mock.production.min.js
deleted file mode 100644
index 208c78eda0136..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler-unstable_mock.production.min.js
+++ /dev/null
@@ -1,18 +0,0 @@
-/** @license React v0.20.1
- * scheduler-unstable_mock.production.min.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-(function(){'use strict';(function(a,v){"object"===typeof exports&&"undefined"!==typeof module?v(exports):"function"===typeof define&&define.amd?define(["exports"],v):(a=a||self,v(a.SchedulerMock={}))})(this,function(a){function v(){return-1!==y&&null!==k&&k.length>=y||C&&D?r=!0:!1}function I(){if(f)throw Error("Already flushing work.");if(null!==e){var b=e;f=!0;try{var h=!0;do h=b(!0,g);while(h);h||(e=null);return!0}finally{f=!1}}else return!1}function E(b,h){var c=b.length;b.push(h);a:for(;;){var a=c-1>>>1,
-w=b[a];if(void 0!==w&&0<z(w,h))b[a]=h,b[c]=w,c=a;else break a}}function m(b){b=b[0];return void 0===b?null:b}function A(b){var h=b[0];if(void 0!==h){var c=b.pop();if(c!==h){b[0]=c;a:for(var a=0,w=b.length;a<w;){var d=2*(a+1)-1,e=b[d],g=d+1,f=b[g];if(void 0!==e&&0>z(e,c))void 0!==f&&0>z(f,e)?(b[a]=f,b[g]=c,a=g):(b[a]=e,b[d]=c,a=d);else if(void 0!==f&&0>z(f,c))b[a]=f,b[g]=c,a=g;else break a}}return h}return null}function z(b,h){var a=b.sortIndex-h.sortIndex;return 0!==a?a:b.id-h.id}function F(b){for(var a=
-m(p);null!==a;){if(null===a.callback)A(p);else if(a.startTime<=b)A(p),a.sortIndex=a.expirationTime,E(n,a);else break;a=m(p)}}function G(b){x=!1;F(b);if(!t)if(null!==m(n))t=!0,e=H;else{var a=m(p);null!==a&&(b=a.startTime-b,q=G,u=g+b)}}function H(b,a){t=!1;x&&(x=!1,q=null,u=-1);B=!0;var c=d;try{F(a);for(l=m(n);null!==l&&(!(l.expirationTime>a)||b&&!v());){var h=l.callback;if("function"===typeof h){l.callback=null;d=l.priorityLevel;var e=h(l.expirationTime<=a);a=g;"function"===typeof e?l.callback=e:l===
-m(n)&&A(n);F(a)}else A(n);l=m(n)}if(null!==l)var f=!0;else{var k=m(p);if(null!==k){var r=k.startTime-a;q=G;u=g+r}f=!1}return f}finally{l=null,d=c,B=!1}}var g=0,e=null,q=null,u=-1,k=null,y=-1,r=!1,f=!1,D=!1,C=!1,n=[],p=[],J=1,l=null,d=3,B=!1,t=!1,x=!1;a.unstable_IdlePriority=5;a.unstable_ImmediatePriority=1;a.unstable_LowPriority=4;a.unstable_NormalPriority=3;a.unstable_Profiling=null;a.unstable_UserBlockingPriority=2;a.unstable_advanceTime=function(b){"disabledLog"!==console.log.name&&(g+=b,null!==
-q&&u<=g&&(q(g),u=-1,q=null))};a.unstable_cancelCallback=function(b){b.callback=null};a.unstable_clearYields=function(){if(null===k)return[];var b=k;k=null;return b};a.unstable_continueExecution=function(){t||B||(t=!0,e=H)};a.unstable_flushAll=function(){if(null!==k)throw Error("Log is not empty. Assert on the log of yielded values before flushing additional work.");I();if(null!==k)throw Error("While flushing work, something yielded a value. Use an assertion helper to assert on the log of yielded values, e.g. expect(Scheduler).toFlushAndYield([...])");
-};a.unstable_flushAllWithoutAsserting=I;a.unstable_flushExpired=function(){if(f)throw Error("Already flushing work.");if(null!==e){f=!0;try{e(!1,g)||(e=null)}finally{f=!1}}};a.unstable_flushNumberOfYields=function(b){if(f)throw Error("Already flushing work.");if(null!==e){var a=e;y=b;f=!0;try{b=!0;do b=a(!0,g);while(b&&!r);b||(e=null)}finally{y=-1,f=r=!1}}};a.unstable_flushUntilNextPaint=function(){if(f)throw Error("Already flushing work.");if(null!==e){var b=e;C=!0;D=!1;f=!0;try{var a=!0;do a=b(!0,
-g);while(a&&!r);a||(e=null)}finally{f=r=C=!1}}};a.unstable_forceFrameRate=function(){};a.unstable_getCurrentPriorityLevel=function(){return d};a.unstable_getFirstCallbackNode=function(){return m(n)};a.unstable_next=function(b){switch(d){case 1:case 2:case 3:var a=3;break;default:a=d}var c=d;d=a;try{return b()}finally{d=c}};a.unstable_now=function(){return g};a.unstable_pauseExecution=function(){};a.unstable_requestPaint=function(){D=!0};a.unstable_runWithPriority=function(a,e){switch(a){case 1:case 2:case 3:case 4:case 5:break;
-default:a=3}var b=d;d=a;try{return e()}finally{d=b}};a.unstable_scheduleCallback=function(a,f,c){var b=g;"object"===typeof c&&null!==c?(c=c.delay,c="number"===typeof c&&0<c?b+c:b):c=b;switch(a){case 1:var d=-1;break;case 2:d=250;break;case 5:d=1073741823;break;case 4:d=1E4;break;default:d=5E3}d=c+d;a={id:J++,callback:f,priorityLevel:a,startTime:c,expirationTime:d,sortIndex:-1};c>b?(a.sortIndex=c,E(p,a),null===m(n)&&a===m(p)&&(x?(q=null,u=-1):x=!0,q=G,u=g+(c-b))):(a.sortIndex=d,E(n,a),t||B||(t=!0,
-e=H));return a};a.unstable_shouldYield=v;a.unstable_wrapCallback=function(a){var b=d;return function(){var c=d;d=b;try{return a.apply(this,arguments)}finally{d=c}}};a.unstable_yieldValue=function(a){"disabledLog"!==console.log.name&&(null===k?k=[a]:k.push(a))}});
-})();
diff --git a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler.development.js b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler.development.js
deleted file mode 100644
index b960dc91132e7..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler.development.js
+++ /dev/null
@@ -1,152 +0,0 @@
-/**
- * @license React
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-/* eslint-disable max-len */
-
-'use strict';
-
-(function(global, factory) {
-  // eslint-disable-next-line no-unused-expressions
-  typeof exports === 'object' && typeof module !== 'undefined'
-    ? (module.exports = factory(require('react')))
-    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
-    ? define(['react'], factory) // eslint-disable-line no-undef
-    : (global.Scheduler = factory(global));
-})(this, function(global) {
-  function unstable_now() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_now.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_scheduleCallback() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_scheduleCallback.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_cancelCallback() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_cancelCallback.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_shouldYield() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_shouldYield.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_requestPaint() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_requestPaint.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_runWithPriority() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_runWithPriority.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_next() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_next.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_wrapCallback() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_wrapCallback.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getCurrentPriorityLevel() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getCurrentPriorityLevel.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getFirstCallbackNode() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getFirstCallbackNode.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_pauseExecution() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_pauseExecution.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_continueExecution() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_continueExecution.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_forceFrameRate() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_forceFrameRate.apply(
-      this,
-      arguments
-    );
-  }
-
-  return Object.freeze({
-    unstable_now: unstable_now,
-    unstable_scheduleCallback: unstable_scheduleCallback,
-    unstable_cancelCallback: unstable_cancelCallback,
-    unstable_shouldYield: unstable_shouldYield,
-    unstable_requestPaint: unstable_requestPaint,
-    unstable_runWithPriority: unstable_runWithPriority,
-    unstable_next: unstable_next,
-    unstable_wrapCallback: unstable_wrapCallback,
-    unstable_getCurrentPriorityLevel: unstable_getCurrentPriorityLevel,
-    unstable_continueExecution: unstable_continueExecution,
-    unstable_pauseExecution: unstable_pauseExecution,
-    unstable_getFirstCallbackNode: unstable_getFirstCallbackNode,
-    unstable_forceFrameRate: unstable_forceFrameRate,
-    get unstable_IdlePriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_IdlePriority;
-    },
-    get unstable_ImmediatePriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_ImmediatePriority;
-    },
-    get unstable_LowPriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_LowPriority;
-    },
-    get unstable_NormalPriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_NormalPriority;
-    },
-    get unstable_UserBlockingPriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_UserBlockingPriority;
-    },
-    get unstable_Profiling() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_Profiling;
-    },
-  });
-});
diff --git a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler.production.min.js b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler.production.min.js
deleted file mode 100644
index 0c2584331b847..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler.production.min.js
+++ /dev/null
@@ -1,146 +0,0 @@
-/**
- * @license React
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-/* eslint-disable max-len */
-
-'use strict';
-
-(function(global, factory) {
-  // eslint-disable-next-line no-unused-expressions
-  typeof exports === 'object' && typeof module !== 'undefined'
-    ? (module.exports = factory(require('react')))
-    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
-    ? define(['react'], factory) // eslint-disable-line no-undef
-    : (global.Scheduler = factory(global));
-})(this, function(global) {
-  function unstable_now() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_now.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_scheduleCallback() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_scheduleCallback.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_cancelCallback() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_cancelCallback.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_shouldYield() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_shouldYield.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_requestPaint() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_requestPaint.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_runWithPriority() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_runWithPriority.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_next() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_next.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_wrapCallback() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_wrapCallback.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getCurrentPriorityLevel() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getCurrentPriorityLevel.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getFirstCallbackNode() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getFirstCallbackNode.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_pauseExecution() {
-    return undefined;
-  }
-
-  function unstable_continueExecution() {
-    return undefined;
-  }
-
-  function unstable_forceFrameRate() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_forceFrameRate.apply(
-      this,
-      arguments
-    );
-  }
-
-  return Object.freeze({
-    unstable_now: unstable_now,
-    unstable_scheduleCallback: unstable_scheduleCallback,
-    unstable_cancelCallback: unstable_cancelCallback,
-    unstable_shouldYield: unstable_shouldYield,
-    unstable_requestPaint: unstable_requestPaint,
-    unstable_runWithPriority: unstable_runWithPriority,
-    unstable_next: unstable_next,
-    unstable_wrapCallback: unstable_wrapCallback,
-    unstable_getCurrentPriorityLevel: unstable_getCurrentPriorityLevel,
-    unstable_continueExecution: unstable_continueExecution,
-    unstable_pauseExecution: unstable_pauseExecution,
-    unstable_getFirstCallbackNode: unstable_getFirstCallbackNode,
-    unstable_forceFrameRate: unstable_forceFrameRate,
-    get unstable_IdlePriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_IdlePriority;
-    },
-    get unstable_ImmediatePriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_ImmediatePriority;
-    },
-    get unstable_LowPriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_LowPriority;
-    },
-    get unstable_NormalPriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_NormalPriority;
-    },
-    get unstable_UserBlockingPriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_UserBlockingPriority;
-    },
-    get unstable_Profiling() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_Profiling;
-    },
-  });
-});
diff --git a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler.profiling.min.js b/fixtures/tests/schedulers/stable/scheduler/umd/scheduler.profiling.min.js
deleted file mode 100644
index 0c2584331b847..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/umd/scheduler.profiling.min.js
+++ /dev/null
@@ -1,146 +0,0 @@
-/**
- * @license React
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-/* eslint-disable max-len */
-
-'use strict';
-
-(function(global, factory) {
-  // eslint-disable-next-line no-unused-expressions
-  typeof exports === 'object' && typeof module !== 'undefined'
-    ? (module.exports = factory(require('react')))
-    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
-    ? define(['react'], factory) // eslint-disable-line no-undef
-    : (global.Scheduler = factory(global));
-})(this, function(global) {
-  function unstable_now() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_now.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_scheduleCallback() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_scheduleCallback.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_cancelCallback() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_cancelCallback.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_shouldYield() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_shouldYield.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_requestPaint() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_requestPaint.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_runWithPriority() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_runWithPriority.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_next() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_next.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_wrapCallback() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_wrapCallback.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getCurrentPriorityLevel() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getCurrentPriorityLevel.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_getFirstCallbackNode() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getFirstCallbackNode.apply(
-      this,
-      arguments
-    );
-  }
-
-  function unstable_pauseExecution() {
-    return undefined;
-  }
-
-  function unstable_continueExecution() {
-    return undefined;
-  }
-
-  function unstable_forceFrameRate() {
-    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_forceFrameRate.apply(
-      this,
-      arguments
-    );
-  }
-
-  return Object.freeze({
-    unstable_now: unstable_now,
-    unstable_scheduleCallback: unstable_scheduleCallback,
-    unstable_cancelCallback: unstable_cancelCallback,
-    unstable_shouldYield: unstable_shouldYield,
-    unstable_requestPaint: unstable_requestPaint,
-    unstable_runWithPriority: unstable_runWithPriority,
-    unstable_next: unstable_next,
-    unstable_wrapCallback: unstable_wrapCallback,
-    unstable_getCurrentPriorityLevel: unstable_getCurrentPriorityLevel,
-    unstable_continueExecution: unstable_continueExecution,
-    unstable_pauseExecution: unstable_pauseExecution,
-    unstable_getFirstCallbackNode: unstable_getFirstCallbackNode,
-    unstable_forceFrameRate: unstable_forceFrameRate,
-    get unstable_IdlePriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_IdlePriority;
-    },
-    get unstable_ImmediatePriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_ImmediatePriority;
-    },
-    get unstable_LowPriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_LowPriority;
-    },
-    get unstable_NormalPriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_NormalPriority;
-    },
-    get unstable_UserBlockingPriority() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_UserBlockingPriority;
-    },
-    get unstable_Profiling() {
-      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
-        .Scheduler.unstable_Profiling;
-    },
-  });
-});
diff --git a/fixtures/tests/schedulers/stable/scheduler/unstable_mock.js b/fixtures/tests/schedulers/stable/scheduler/unstable_mock.js
deleted file mode 100644
index e72ea3186f005..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/unstable_mock.js
+++ /dev/null
@@ -1,7 +0,0 @@
-'use strict';
-
-if (process.env.NODE_ENV === 'production') {
-  module.exports = require('./cjs/scheduler-unstable_mock.production.min.js');
-} else {
-  module.exports = require('./cjs/scheduler-unstable_mock.development.js');
-}
diff --git a/fixtures/tests/schedulers/stable/scheduler/unstable_post_task.js b/fixtures/tests/schedulers/stable/scheduler/unstable_post_task.js
deleted file mode 100644
index 62ecbd5a072bc..0000000000000
--- a/fixtures/tests/schedulers/stable/scheduler/unstable_post_task.js
+++ /dev/null
@@ -1,7 +0,0 @@
-'use strict';
-
-if (process.env.NODE_ENV === 'production') {
-  module.exports = require('./cjs/scheduler-unstable_post_task.production.min.js');
-} else {
-  module.exports = require('./cjs/scheduler-unstable_post_task.development.js');
-}
diff --git a/fixtures/tests/yarn.lock b/fixtures/tests/yarn.lock
deleted file mode 100644
index 94134f6709072..0000000000000
--- a/fixtures/tests/yarn.lock
+++ /dev/null
@@ -1,3882 +0,0 @@
-# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
-# yarn lockfile v1
-
-
-"@babel/code-frame@^7.0.0", "@babel/code-frame@^7.12.13":
-  version "7.12.13"
-  resolved "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.12.13.tgz"
-  integrity sha512-HV1Cm0Q3ZrpCR93tkWOYiuYIgLxZXZFVG2VgK+MBWjUqZTundupbfx2aXarXuw5Ko5aMcjtJgbSs4vUGBS5v6g==
-  dependencies:
-    "@babel/highlight" "^7.12.13"
-
-"@babel/compat-data@^7.13.8":
-  version "7.13.8"
-  resolved "https://registry.npmjs.org/@babel/compat-data/-/compat-data-7.13.8.tgz"
-  integrity sha512-EaI33z19T4qN3xLXsGf48M2cDqa6ei9tPZlfLdb2HC+e/cFtREiRd8hdSqDbwdLB0/+gLwqJmCYASH0z2bUdog==
-
-"@babel/core@^7.1.0", "@babel/core@^7.13.10", "@babel/core@^7.7.5":
-  version "7.13.10"
-  resolved "https://registry.npmjs.org/@babel/core/-/core-7.13.10.tgz"
-  integrity sha512-bfIYcT0BdKeAZrovpMqX2Mx5NrgAckGbwT982AkdS5GNfn3KMGiprlBAtmBcFZRUmpaufS6WZFP8trvx8ptFDw==
-  dependencies:
-    "@babel/code-frame" "^7.12.13"
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