Added polling-controller

packages/polling-controller/CHANGELOG.md

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+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+[Unreleased]: https://github.com/MetaMask/core/

packages/polling-controller/LICENSE

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+MIT License
+
+Copyright (c) 2018 MetaMask
+
+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

packages/polling-controller/README.md

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+# `@metamask/polling-controller`
+
+PollingController is used as the base for all controllers that need to poll for updates based on `networkClientId`.
+
+## Installation
+
+`yarn add @metamask/polling-controller`
+
+or
+
+`npm install @metamask/polling-controller`
+
+## Contributing
+
+This package is part of a monorepo. Instructions for contributing can be found in the [monorepo README](https://github.com/MetaMask/core#readme).

packages/polling-controller/jest.config.js

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+/*
+ * For a detailed explanation regarding each configuration property and type check, visit:
+ * https://jestjs.io/docs/configuration
+ */
+
+const merge = require('deepmerge');
+const path = require('path');
+
+const baseConfig = require('../../jest.config.packages');
+
+const displayName = path.basename(__dirname);
+
+module.exports = merge(baseConfig, {
+  // The display name when running multiple projects
+  displayName,
+
+  // An object that configures minimum threshold enforcement for coverage results
+  coverageThreshold: {
+    global: {
+      branches: 65.31,
+      functions: 76.59,
+      lines: 75.83,
+      statements: 75.91,
+    },
+  },
+});

packages/polling-controller/package.json

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+{
+  "name": "@metamask/polling-controller",
+  "version": "0.0.0",
+  "description": "Polling Controller is the base for controllers that polling by networkClientId",
+  "keywords": [
+    "MetaMask",
+    "Ethereum"
+  ],
+  "homepage": "https://github.com/MetaMask/core/tree/main/packages/polling-controller#readme",
+  "bugs": {
+    "url": "https://github.com/MetaMask/core/issues"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/MetaMask/core.git"
+  },
+  "license": "MIT",
+  "main": "./dist/index.js",
+  "types": "./dist/index.d.ts",
+  "files": [
+    "dist/"
+  ],
+  "scripts": {
+    "build:docs": "typedoc",
+    "changelog:validate": "../../scripts/validate-changelog.sh @metamask/polling-controller",
+    "publish:preview": "yarn npm publish --tag preview",
+    "test": "jest",
+    "test:watch": "jest --watch"
+  },
+  "dependencies": {
+    "@metamask/base-controller": "^3.2.1",
+    "@metamask/controller-utils": "^4.3.2",
+    "@metamask/network-controller": "^12.2.0",
+    "@metamask/utils": "^6.2.0",
+    "@types/uuid": "^8.3.0",
+    "uuid": "^8.3.2"
+  },
+  "devDependencies": {
+    "@metamask/auto-changelog": "^3.1.0",
+    "@types/jest": "^27.4.1",
+    "deepmerge": "^4.2.2",
+    "jest": "^27.5.1",
+    "ts-jest": "^27.1.4",
+    "typedoc": "^0.22.15",
+    "typedoc-plugin-missing-exports": "^0.22.6",
+    "typescript": "~4.6.3"
+  },
+  "peerDependencies": {
+    "@metamask/network-controller": "^12.2.0"
+  },
+  "engines": {
+    "node": ">=16.0.0"
+  },
+  "publishConfig": {
+    "access": "public",
+    "registry": "https://registry.npmjs.org/"
+  }
+}