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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| /** | ||
| * Copyright (c) 2014-present, Facebook, Inc. All rights reserved. | ||
| * | ||
| * This source code is licensed under the MIT license found in the | ||
| * LICENSE file in the root directory of this source tree. | ||
| * | ||
| * @flow | ||
| */ | ||
|
|
||
| import type {ProjectConfig} from 'types/Config'; | ||
|
|
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| // This works for nodes without the async_hooks as the require's lazy | ||
| // $FlowFixMe: Node core module | ||
| import asyncHooks from 'async_hooks'; | ||
|
|
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| import { | ||
| formatStackTrace, | ||
| separateMessageFromStack, | ||
| } from '../../jest-message-util/build'; | ||
|
|
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| // Inspired by https://github.com/mafintosh/why-is-node-running/blob/master/index.js | ||
| // Extracted as we want to format the result ourselves | ||
| export default function collectHandles(): () => Array<Error> { | ||
| const activeHandles: Map<string, Error> = new Map(); | ||
|
|
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| function initHook(asyncId, type) { | ||
| if (type === 'TIMERWRAP') return; | ||
| const error = new Error(type); | ||
|
|
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| if (Error.captureStackTrace) { | ||
| Error.captureStackTrace(error, initHook); | ||
| } | ||
|
|
||
| if (error.stack.includes('Runtime.requireModule')) { | ||
| activeHandles.set(asyncId, error); | ||
| } | ||
| } | ||
|
|
||
| let hook; | ||
|
|
||
| try { | ||
| hook = asyncHooks.createHook({ | ||
| destroy(asyncId) { | ||
| activeHandles.delete(asyncId); | ||
| }, | ||
| init: initHook, | ||
| }); | ||
|
|
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| hook.enable(); | ||
| } catch (e) { | ||
| const nodeMajor = Number(process.versions.node.split('.')[0]); | ||
| if (e.code === 'MODULE_NOT_FOUND' && nodeMajor < 8) { | ||
| throw new Error( | ||
| 'You can only use --detectOpenHandles on Node 8 and newer.', | ||
| ); | ||
| } else { | ||
| throw e; | ||
| } | ||
| } | ||
|
|
||
| return () => { | ||
| hook.disable(); | ||
|
|
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| const result = Array.from(activeHandles.values()); | ||
|
|
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| activeHandles.clear(); | ||
|
|
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| return result; | ||
| }; | ||
| } | ||
|
|
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| export function formatHandleErrors( | ||
| errors: Array<Error>, | ||
| config: ProjectConfig, | ||
| ): Array<string> { | ||
| return errors.map(err => { | ||
| const {message, stack} = separateMessageFromStack(err.stack); | ||
|
|
||
| return ( | ||
| message + '\n\n' + formatStackTrace(stack, config, {noStackTrace: false}) | ||
| ); | ||
| }); | ||
| } |
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