Merge branch 'master' into better-signature-identity-checks

.dockerignore

@@ -43,7 +43,6 @@ yarn-error.log
 .parallelperf.*
 .failed-tests
 TEST-results.xml
-package-lock.json
 tests
 .vscode
 .git

.eslintignore

@@ -1,4 +1,4 @@
 /built/local/**
 /tests/**
 /lib/**
-/src/lib/*.generated.d.ts
+/src/lib/*.generated.d.ts

.eslintrc.json

@@ -17,12 +17,27 @@
         "@typescript-eslint/adjacent-overload-signatures": "error",
         "@typescript-eslint/array-type": "error",
 
-        "camelcase": "off",
-        "@typescript-eslint/camelcase": ["error", { "properties": "never", "allow": ["^[A-Za-z][a-zA-Za-z]+_[A-Za-z]+$"] }],
+        "brace-style": "off",
+        "@typescript-eslint/brace-style": ["error", "stroustrup", { "allowSingleLine": true }],
+
+        "@typescript-eslint/naming-convention": [
+            "error",
+            { "selector": "typeLike", "format": ["PascalCase"], "filter": { "regex": "^(__String|[A-Za-z]+_[A-Za-z]+)$", "match": false } },
+            { "selector": "interface", "format": ["PascalCase"], "custom": { "regex": "^I[A-Z]", "match": false }, "filter": { "regex": "^I(Arguments|TextWriter|O([A-Z][a-z]+[A-Za-z]*)?)$", "match": false } },
+            { "selector": "variable", "format": ["camelCase", "PascalCase", "UPPER_CASE"], "leadingUnderscore": "allow", "filter": { "regex": "^(_{1,2}filename|_{1,2}dirname|_+|[A-Za-z]+_[A-Za-z]+)$", "match": false } },
+            { "selector": "function", "format": ["camelCase", "PascalCase"], "leadingUnderscore": "allow", "filter": { "regex": "^[A-Za-z]+_[A-Za-z]+$", "match": false } },
+            { "selector": "parameter", "format": ["camelCase"], "leadingUnderscore": "allow", "filter": { "regex": "^(_+|[A-Za-z]+_[A-Z][a-z]+)$", "match": false } },
+            { "selector": "method", "format": ["camelCase", "PascalCase"], "leadingUnderscore": "allow", "filter": { "regex": "^[A-Za-z]+_[A-Za-z]+$", "match": false } },
+            { "selector": "memberLike", "format": ["camelCase"], "leadingUnderscore": "allow", "filter": { "regex": "^[A-Za-z]+_[A-Za-z]+$", "match": false } },
+            { "selector": "enumMember", "format": ["camelCase", "PascalCase"], "leadingUnderscore": "allow", "filter": { "regex": "^[A-Za-z]+_[A-Za-z]+$", "match": false } },
+            { "selector": "property", "format": null }
+        ],
 
-        "@typescript-eslint/class-name-casing": "error",
         "@typescript-eslint/consistent-type-definitions": ["error", "interface"],
-        "@typescript-eslint/interface-name-prefix": "error",
+
+        "no-duplicate-imports": "off",
+        "@typescript-eslint/no-duplicate-imports": "error",
+
         "@typescript-eslint/no-inferrable-types": "error",
         "@typescript-eslint/no-misused-new": "error",
         "@typescript-eslint/no-this-alias": "error",
@@ -77,7 +92,6 @@
         "jsdoc/check-alignment": "error",
 
         // eslint
-        "brace-style": ["error", "stroustrup", { "allowSingleLine": true }],
         "constructor-super": "error",
         "curly": ["error", "multi-line"],
         "dot-notation": "error",
@@ -86,7 +100,6 @@
         "new-parens": "error",
         "no-caller": "error",
         "no-duplicate-case": "error",
-        "no-duplicate-imports": "error",
         "no-empty": "error",
         "no-eval": "error",
         "no-extra-bind": "error",

.github/ISSUE_TEMPLATE/Bug_report.md

@@ -7,7 +7,7 @@ assignees: ''
 
 ---
 
-<!-- 🚨 STOP 🚨 𝗦𝗧𝗢𝗣 🚨 𝑺𝑻𝑶𝑷 🚨
+<!-- 🚨 STOP 🚨 STOP 🚨 STOP 🚨
 
 Half of all issues filed here are duplicates, answered in the FAQ, or not appropriate for the bug tracker. Even if you think you've found a *bug*, please read the FAQ first, especially the Common "Bugs" That Aren't Bugs section!
 

.github/ISSUE_TEMPLATE/config.yml

@@ -14,6 +14,6 @@ contact_links:
     name: "TypeScript FAQ"
     url: "https://github.com/microsoft/TypeScript/wiki/FAQ"
   - 
-    about: "Please raise issues about the site on it's own repo."
+    about: "Please raise issues about the site on its own repo."
     name: Website
     url: "https://github.com/microsoft/TypeScript-Website/issues/new"

.github/codeql/codeql-configuration.yml

@@ -0,0 +1,4 @@
+name : CodeQL Configuration
+
+paths:
+  - './src' 

.github/pr_owners.txt

@@ -6,3 +6,8 @@ RyanCavanaugh
 sheetalkamat
 orta
 rbuckton
+ahejlsberg
+amcasey
+jessetrinity
+minestarks
+uniqueiniquity

.github/tsc.json

@@ -0,0 +1,18 @@
+{
+  "problemMatcher": [
+      {
+          "owner": "tsc",
+          "pattern": [
+              {
+                  "regexp": "^(?:\\s+\\d+\\>)?([^\\s].*)\\((\\d+),(\\d+)\\)\\s*:\\s+(error|warning|info)\\s+(\\w{1,2}\\d+)\\s*:\\s*(.*)$",
+                  "file": 1,
+                  "line": 2,
+                  "column": 3,
+                  "severity": 4,
+                  "code": 5,
+                  "message": 6
+              }
+          ]
+      }
+  ]
+}

.github/workflows/accept-baselines-fix-lints.yaml

@@ -0,0 +1,29 @@
+name: Accept Baselines and Fix Lints
+
+on:
+  workflow_dispatch: {}
+
+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: Configure Git, Run Tests, Update Baselines, Apply Fixes
+      run: |
+        git config user.email "[email protected]"
+        git config user.name "TypeScript Bot"
+        npm install
+        gulp runtests-parallel --ci --fix || true
+        gulp baseline-accept
+        git add ./src
+        git add ./tests/baselines/reference
+        git diff --cached
+        git commit -m "Update Baselines and/or Applied Lint Fixes"
+        git push

.github/workflows/ci.yml

@@ -16,10 +16,10 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [8.x, 10.x, 12.x]
+        node-version: [10.x, 12.x, 14.x]
 
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
       with:
         fetch-depth: 5
     - name: Use node version ${{ matrix.node-version }}
@@ -30,11 +30,21 @@ jobs:
       run: |
         npm uninstall typescript --no-save
         npm uninstall tslint --no-save
-    - name: npm install and test
-      run: |
-        npm install
-        npm update
-        npm test
+    - run:  npm ci
+
+    # Re: https://github.com/actions/setup-node/pull/125
+    - name: Register Problem Matcher for TSC
+      run: echo "##[add-matcher].github/tsc.json"
+
+    - name: Tests
+      run:  npm test -- --no-lint
+
+    - name: Linter
+      run:  npm run lint:ci
+
+    - name: Adding playwright
+      run: npm install --no-save --no-package-lock playwright
+
     - name: Validate the browser can import TypeScript
       run: gulp test-browser-integration
-    
+

.github/workflows/codeql.yml

@@ -0,0 +1,54 @@
+name: "Code scanning - action"
+
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: '0 19 * * 0'
+
+jobs:
+  CodeQL-Build:
+
+    # CodeQL runs on ubuntu-latest and windows-latest
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+      with:
+        # We must fetch at least the immediate parents so that if this is
+        # a pull request then we can checkout the head.
+        fetch-depth: 2
+
+    # If this run was triggered by a pull request event, then checkout
+    # the head of the pull request instead of the merge commit.
+    - run: git checkout HEAD^2
+      if: ${{ github.event_name == 'pull_request' }}
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v1
+      with:
+        config-file: ./.github/codeql/codeql-configuration.yml
+      # Override language selection by uncommenting this and choosing your languages
+      # with:
+      #   languages: go, javascript, csharp, python, cpp, java
+
+    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+    # If this step fails, then you should remove it and run the build manually (see below)
+    - name: Autobuild
+      uses: github/codeql-action/autobuild@v1
+
+    # ℹ️ Command-line programs to run using the OS shell.
+    # 📚 https://git.io/JvXDl
+
+    # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
+    #    and modify them (or add more) to build your code if your project
+    #    uses a compiled language
+
+    #- run: |
+    #   make bootstrap
+    #   make release
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v1

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

@@ -23,7 +23,7 @@ jobs:
         sed -i -e 's/const versionMajorMinor = ".*"/const versionMajorMinor = "${{ github.event.client_payload.core_major_minor }}"/g' tests/baselines/reference/api/typescript.d.ts
         sed -i -e 's/const versionMajorMinor = ".*"/const versionMajorMinor = "${{ github.event.client_payload.core_major_minor }}"/g' tests/baselines/reference/api/tsserverlibrary.d.ts
         sed -i -e 's/const version = `${versionMajorMinor}.0-.*`/const version = `${versionMajorMinor}.0-${{ github.event.client_payload.core_tag || 'dev' }}`/g' src/compiler/corePublic.ts
-        npm install
+        npm ci
         gulp LKG
         npm test
         git diff
@@ -32,7 +32,7 @@ jobs:
         git add tests/baselines/reference/api/typescript.d.ts
         git add tests/baselines/reference/api/tsserverlibrary.d.ts
         git add ./lib
-        git config user.email "ts_bot@rcavanaugh.com"
+        git config user.email "typescriptbot@microsoft.com"
         git config user.name "TypeScript Bot"
         git commit -m 'Bump version to ${{ github.event.client_payload.package_version }} and LKG'
         git push --set-upstream origin ${{ github.event.client_payload.branch_name }}

.github/workflows/nightly.yaml

@@ -3,6 +3,8 @@ name: Publish Nightly
 on:
   schedule:
     - cron:  '0 7 * * *'
+  # enable users to manually trigger with workflow_dispatch
+  workflow_dispatch: {}
   repository_dispatch:
     types: publish-nightly
 
@@ -20,7 +22,7 @@ jobs:
     - name: Setup and publish nightly
       run: |
         npm whoami
-        npm i
+        npm ci
         gulp configure-nightly
         gulp LKG
         gulp runtests-parallel

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

@@ -21,11 +21,12 @@ jobs:
         npm uninstall tslint --no-save
     - name: npm install and test
       run: |
-        npm install
-        npm update
+        npm ci
         npm test
       env:
         CI: true
+    - name: Adding playwright
+      run: npm install --no-save --no-package-lock playwright    
     - name: Validate the browser can import TypeScript
       run: gulp test-browser-integration
     - name: LKG, clean, and pack
@@ -41,4 +42,3 @@ jobs:
       with:
         name: tgz
         path: typescript.tgz
-

.github/workflows/set-version.yaml

@@ -29,7 +29,7 @@ jobs:
         sed -i -e 's/const versionMajorMinor = ".*"/const versionMajorMinor = "${{ github.event.client_payload.core_major_minor }}"/g' tests/baselines/reference/api/typescript.d.ts
         sed -i -e 's/const versionMajorMinor = ".*"/const versionMajorMinor = "${{ github.event.client_payload.core_major_minor }}"/g' tests/baselines/reference/api/tsserverlibrary.d.ts
         sed -i -e 's/const version = .*;/const version = "${{ github.event.client_payload.package_version }}" as string;/g' src/compiler/corePublic.ts
-        npm install
+        npm ci
         gulp LKG
         npm test
         git diff
@@ -38,7 +38,7 @@ jobs:
         git add tests/baselines/reference/api/typescript.d.ts
         git add tests/baselines/reference/api/tsserverlibrary.d.ts
         git add ./lib
-        git config user.email "ts_bot@rcavanaugh.com"
+        git config user.email "typescriptbot@microsoft.com"
         git config user.name "TypeScript Bot"
         git commit -m 'Bump version to ${{ github.event.client_payload.package_version }} and LKG'
         git push

.github/workflows/sync-branch.yaml

@@ -3,6 +3,11 @@ name: Sync branch with master
 on:
   repository_dispatch:
     types: sync-branch
+  workflow_dispatch:
+    inputs:
+      branch_name:
+        description: 'Target Branch Name'
+        required: true
 
 jobs:
   build:
@@ -15,15 +20,16 @@ jobs:
         node-version: 12.x
     - uses: actions/checkout@v2
       with:
-        ref: ${{ github.event.client_payload.branch_name }}
+        ref: ${{ github.event.inputs.branch_name || github.event.client_payload.branch_name }}
+        fetch-depth: 0
     # This does a test post-merge and only pushes the result if the test succeeds
     # required client_payload members:
     # branch_name - the target branch
     - run: |
-        git config user.email "ts_bot@rcavanaugh.com"
+        git config user.email "typescriptbot@microsoft.com"
         git config user.name "TypeScript Bot"
         git fetch origin master
-        git merge master --no-ff
-        npm install
+        git merge origin/master --no-ff
+        npm ci
         npm test
         git push

.github/workflows/twoslash-repros.yaml

@@ -0,0 +1,23 @@
+name: Twoslash Code Sample Repros
+
+on:
+  push:
+    branches:
+      - orta-twoslash-repros
+  schedule:
+    - cron:  '0 8 * * *'
+  repository_dispatch:
+    types: run-twoslash-repros
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Use node
+      uses: actions/setup-node@v1
+    - run: |
+       npm init -y
+       npm install --save typescript@next
+    - uses: microsoft/TypeScript-Twoslash-Repro-Action@master
+      with: 
+        github-token: ${{ secrets.TS_BOT_GITHUB_TOKEN }}