Add status-checker GitHub Action (dotnet#4492)

.github/actions/status-checker/.eslintignore

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+dist/
+lib/
+node_modules/
+jest.config.js

.github/actions/status-checker/.eslintrc.json

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+{
+    "plugins": ["jest", "@typescript-eslint"],
+    "extends": ["plugin:github/recommended"],
+    "parser": "@typescript-eslint/parser",
+    "parserOptions": {
+      "ecmaVersion": 9,
+      "sourceType": "module",
+      "project": "./tsconfig.json"
+    },
+    "rules": {
+      "eslint-comments/no-use": "off",
+      "import/no-namespace": "off",
+      "no-unused-vars": "off",
+      "@typescript-eslint/no-unused-vars": "error",
+      "@typescript-eslint/explicit-member-accessibility": ["error", {"accessibility": "no-public"}],
+      "@typescript-eslint/no-require-imports": "error",
+      "@typescript-eslint/array-type": "error",
+      "@typescript-eslint/await-thenable": "error",
+      "@typescript-eslint/ban-ts-comment": "error",
+      "camelcase": "off",
+      "@typescript-eslint/consistent-type-assertions": "error",
+      "@typescript-eslint/explicit-function-return-type": ["error", {"allowExpressions": true}],
+      "@typescript-eslint/func-call-spacing": ["error", "never"],
+      "@typescript-eslint/no-array-constructor": "error",
+      "@typescript-eslint/no-empty-interface": "error",
+      "@typescript-eslint/no-explicit-any": "error",
+      "@typescript-eslint/no-extraneous-class": "error",
+      "@typescript-eslint/no-for-in-array": "error",
+      "@typescript-eslint/no-inferrable-types": "error",
+      "@typescript-eslint/no-misused-new": "error",
+      "@typescript-eslint/no-namespace": "error",
+      "@typescript-eslint/no-non-null-assertion": "warn",
+      "@typescript-eslint/no-unnecessary-qualifier": "error",
+      "@typescript-eslint/no-unnecessary-type-assertion": "error",
+      "@typescript-eslint/no-useless-constructor": "error",
+      "@typescript-eslint/no-var-requires": "error",
+      "@typescript-eslint/prefer-for-of": "warn",
+      "@typescript-eslint/prefer-function-type": "warn",
+      "@typescript-eslint/prefer-includes": "error",
+      "@typescript-eslint/prefer-string-starts-ends-with": "error",
+      "@typescript-eslint/promise-function-async": "error",
+      "@typescript-eslint/require-array-sort-compare": "error",
+      "@typescript-eslint/restrict-plus-operands": "error",
+      "semi": "off",
+      "@typescript-eslint/semi": ["error", "never"],
+      "@typescript-eslint/type-annotation-spacing": "error",
+      "@typescript-eslint/unbound-method": "error"
+    },
+    "env": {
+      "node": true,
+      "es6": true,
+      "jest/globals": true
+    }
+  }

.github/actions/status-checker/.gitattributes

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+dist/** -diff linguist-generated=true 

.github/actions/status-checker/.gitignore

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+# Dependency directory
+node_modules
+
+# Rest pulled from https://github.com/github/gitignore/blob/master/Node.gitignore
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+jspm_packages/
+
+# TypeScript v1 declaration files
+typings/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+.env.test
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+
+# next.js build output
+.next
+
+# nuxt.js build output
+.nuxt
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# OS metadata
+.DS_Store
+Thumbs.db
+
+# Ignore built ts files
+__tests__/runner/*
+lib/**/*

.github/actions/status-checker/.prettierignore

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+dist/
+lib/
+node_modules/

.github/actions/status-checker/README.md

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+# Status checker GitHub Action
+
+Use this action to check for Open Publishing Build system warnings.:rocket:
+
+This action only adds a status check to a pull request if the "OpenPublishing.Build" status check contains warnings. The new status check will have a state of "failure" so that you can more easily identify build warnings at a glance.
+
+## Usage
+
+Add a new YAML file to your repo in the *.github/workflows* folder. The only required input is the GitHub OAuth token.
+
+For example, the following YAML example calls this status-checker Action.
+
+```yml
+on: [pull_request]
+
+jobs:
+  status_checker_job:
+    runs-on: ubuntu-latest
+    name: Checks the OpenPublishing.Build status check for build warnings
+    steps:
+    - uses: actions/checkout@v1
+    - uses: dotnet/samples/.github/actions/status-checker@main
+      with:
+        repo-token: ${{ secrets.GITHUB_TOKEN }}
+```

.github/actions/status-checker/__tests__/main.test.ts

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+import {wait} from '../src/wait'
+import * as process from 'process'
+import * as cp from 'child_process'
+import * as path from 'path'
+
+test('throws invalid number', async () => {
+  const input = parseInt('foo', 10)
+  await expect(wait(input)).rejects.toThrow('milliseconds not a number')
+})
+
+test('wait 500 ms', async () => {
+  const start = new Date()
+  await wait(500)
+  const end = new Date()
+  var delta = Math.abs(end.getTime() - start.getTime())
+  expect(delta).toBeGreaterThan(450)
+})
+
+// shows how the runner will run a javascript action with env / stdout protocol
+test('test runs', () => {
+  process.env['INPUT_MILLISECONDS'] = '500'
+  const np = process.execPath
+  const ip = path.join(__dirname, '..', 'lib', 'main.js')
+  const options: cp.ExecFileSyncOptions = {
+    env: process.env
+  }
+  console.log(cp.execFileSync(np, [ip], options).toString())
+})

.github/actions/status-checker/action.yml

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+name: 'Status check checker'
+description: "Checks the OpenPublishing.Build's status check's description to see if there are build warnings, and adds a new status check with a state of failure if build warnings are present."
+author: 'Genevieve Warren'
+inputs:
+  repo-token:
+    description: 'The GITHUB_TOKEN secret'
+    required: true
+runs:
+  using: 'node12'
+  main: 'dist/index.js'