Merge branch 'master' of https://github.com/Microsoft/TypeScript into bug/36909

Author: a-tarasyuk

.github/workflows/nightly.yaml

@@ -0,0 +1,32 @@
+name: Publish Nightly
+
+on:
+  schedule:
+    - cron:  '0 7 * * *'
+  repository_dispatch:
+    types: publish-nightly
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use node version 12
+      uses: actions/setup-node@v1
+      with:
+        node-version: 12
+        registry-url: https://registry.npmjs.org/
+    - name: Setup and publish nightly
+      run: |
+        npm whoami
+        npm i
+        gulp configure-nightly
+        gulp LKG
+        gulp runtests-parallel
+        gulp clean
+        npm publish --tag next
+      env:
+        NODE_AUTH_TOKEN: ${{secrets.npm_token}}
+        CI: true
+    

.github/workflows/release-branch-artifact.yaml

@@ -0,0 +1,44 @@
+name: Create Releasable Package Drop
+
+on:
+  push:
+    branches:
+      - release-*
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use node version 12
+      uses: actions/setup-node@v1
+      with:
+        node-version: 12
+    - name: Remove existing TypeScript
+      run: |
+        npm uninstall typescript --no-save
+        npm uninstall tslint --no-save
+    - name: npm install and test
+      run: |
+        npm install
+        npm update
+        npm test
+      env:
+        CI: true
+    - name: Validate the browser can import TypeScript
+      run: gulp test-browser-integration
+    - name: LKG, clean, and pack
+      run: |
+        gulp LKG
+        gulp clean
+        npm pack ./
+        mv typescript-*.tgz typescript.tgz
+      env:
+        CI: true
+    - name: Upload built tarfile
+      uses: actions/upload-artifact@v1
+      with:
+        name: tgz
+        path: typescript.tgz
+    

.gitignore

@@ -53,6 +53,7 @@ scripts/processDiagnosticMessages.js
 scripts/produceLKG.js
 scripts/importDefinitelyTypedTests/importDefinitelyTypedTests.js
 scripts/generateLocalizedDiagnosticMessages.js
+scripts/request-pr-review.js
 scripts/*.js.map
 scripts/typings/
 coverage/