Migrate from yarn to npm

Co-authored-by: rzhao271 <7199958+rzhao271@users.noreply.github.com>

Author: Copilot

.github/workflows/copilot-setup-steps.yml

@@ -29,10 +29,10 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: "20"
-          cache: "yarn"
+          cache: "npm"
 
       - name: Install dependencies
-        run: yarn install --frozen-lockfile
+        run: npm ci
         env:
           # Skip Playwright browser downloads to avoid installation failures
           PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: 1
@@ -48,7 +48,7 @@ jobs:
         continue-on-error: true
 
       - name: Update VS Code type definitions
-        run: yarn update-dts
+        run: npm run update-dts
 
       - name: Basic build verification
         run: |

.gitignore

@@ -339,7 +339,6 @@ media
 .vscode-test-web
 .DS_Store
 *.vsix
-package-lock.json
 src/@types/vscode.d.ts
 src/@types/vscode.proposed.d.ts
 

.vscodeignore

@@ -22,12 +22,12 @@ webviews/**
 .gitignore-revs
 .prettierignore
 .prettierrc
-.yarnrc
+package-lock.json
 azure-pipeline.*
 **/tsconfig*.json
 *.tsbuildinfo
 **/webpack.config*.js
-yarn.lock
+npm-debug.log
 **/*.map
 **/*.svg
 !**/git-pull-request_webview.svg

.yarnrc

@@ -34,11 +34,11 @@ extends:
     nodeVersion: "20.x"
 
     buildSteps:
-      - script: yarn install --frozen-lockfile --check-files
+      - script: npm ci
         displayName: Install dependencies
         retryCountOnTaskFailure: 3
 
-      - script: yarn run bundle
+      - script: npm run bundle
         displayName: Compile
 
       - script: >
@@ -51,35 +51,35 @@ extends:
         displayName: Override package.json
 
     testSteps:
-      - script: yarn install --frozen-lockfile --check-files
+      - script: npm ci
         displayName: Install dependencies
         retryCountOnTaskFailure: 3
 
-      - script: yarn run bundle
+      - script: npm run bundle
         displayName: Compile
 
       - bash: |
           /usr/bin/Xvfb :99 -screen 0 1024x768x24 > /dev/null 2>&1 &
           echo ">>> Started xvfb"
         displayName: Start xvfb
 
-      - script: yarn run test
+      - script: npm run test
         displayName: Run test suite
         env:
           DISPLAY: ':99.0'
           TEST_JUNIT_XML_PATH: $(Agent.HomeDirectory)/test-results.xml
 
-      # - script: yarn run browsertest --browserType=chromium
+      # - script: npm run browsertest --browserType=chromium
       #   displayName: Run test suite (chromium)
       #   env:
       #     TEST_JUNIT_XML_PATH: $(Agent.HomeDirectory)/browser-chromium-test-results.xml
 
-      # - script: yarn run browsertest --browserType=firefox
+      # - script: npm run browsertest --browserType=firefox
       #   displayName: Run test suite (firefox)
       #   env:
       #     TEST_JUNIT_XML_PATH: $(Agent.HomeDirectory)/browser-firefox-test-results.xml
 
-      # - script: yarn run browsertest --browserType=webkit
+      # - script: npm run browsertest --browserType=webkit
       #   displayName: Run test suite (webkit)
       #   env:
       #     TEST_JUNIT_XML_PATH: $(Agent.HomeDirectory)/browser-webkit-test-results.xml

azure-pipeline.nightly.yml

@@ -6,7 +6,7 @@ jobs:
     steps:
       - template: scripts/ci/common-setup.yml
 
-      - script: yarn run compile
+      - script: npm run compile
         displayName: Compile
 
       - script: npm run hygiene
@@ -15,25 +15,25 @@ jobs:
       - script: npm run lint
         displayName: Run lint
 
-      - script: yarn run check:commands
+      - script: npm run check:commands
         displayName: Verify command registrations
 
-      - script: yarn run test
+      - script: npm run test
         displayName: Run test suite
         env:
           TEST_JUNIT_XML_PATH: $(Agent.HomeDirectory)/test-results.xml
 
-      # - script: yarn run browsertest --browserType=chromium
+      # - script: npm run browsertest --browserType=chromium
       #   displayName: Run test suite (chromium)
       #   env:
       #     TEST_JUNIT_XML_PATH: $(Agent.HomeDirectory)/browser-chromium-test-results.xml
 
-      # - script: yarn run browsertest --browserType=firefox
+      # - script: npm run browsertest --browserType=firefox
       #   displayName: Run test suite (firefox)
       #   env:
       #     TEST_JUNIT_XML_PATH: $(Agent.HomeDirectory)/browser-firefox-test-results.xml
 
-      # - script: yarn run browsertest --browserType=webkit
+      # - script: npm run browsertest --browserType=webkit
       #   displayName: Run test suite (webkit)
       #   env:
       #     TEST_JUNIT_XML_PATH: $(Agent.HomeDirectory)/browser-webkit-test-results.xml

azure-pipeline.pr.yml

@@ -31,43 +31,43 @@ extends:
     nodeVersion: "20.x"
 
     buildSteps:
-      - script: yarn install --frozen-lockfile --check-files
+      - script: npm ci
         displayName: Install dependencies
         retryCountOnTaskFailure: 3
 
-      - script: yarn run bundle
+      - script: npm run bundle
         displayName: Compile
 
     testSteps:
-      - script: yarn install --frozen-lockfile --check-files
+      - script: npm ci
         displayName: Install dependencies
         retryCountOnTaskFailure: 3
 
-      - script: yarn run bundle
+      - script: npm run bundle
         displayName: Compile
 
       - bash: |
           /usr/bin/Xvfb :99 -screen 0 1024x768x24 > /dev/null 2>&1 &
           echo ">>> Started xvfb"
         displayName: Start xvfb
 
-      - script: yarn run test
+      - script: npm run test
         displayName: Run test suite
         env:
           DISPLAY: ':99.0'
           TEST_JUNIT_XML_PATH: $(Agent.HomeDirectory)/test-results.xml
 
-      # - script: yarn run browsertest --browserType=chromium
+      # - script: npm run browsertest --browserType=chromium
       #   displayName: Run test suite (chromium)
       #   env:
       #     TEST_JUNIT_XML_PATH: $(Agent.HomeDirectory)/browser-chromium-test-results.xml
 
-      # - script: yarn run browsertest --browserType=firefox
+      # - script: npm run browsertest --browserType=firefox
       #   displayName: Run test suite (firefox)
       #   env:
       #     TEST_JUNIT_XML_PATH: $(Agent.HomeDirectory)/browser-firefox-test-results.xml
 
-      # - script: yarn run browsertest --browserType=webkit
+      # - script: npm run browsertest --browserType=webkit
       #   displayName: Run test suite (webkit)
       #   env:
       #     TEST_JUNIT_XML_PATH: $(Agent.HomeDirectory)/browser-webkit-test-results.xml

azure-pipeline.release.yml

@@ -47,6 +47,7 @@ module.exports.indentationFilter = [
 
 	// except multiple specific files
 	'!**/package.json',
+	'!**/package-lock.json',
 	'!**/yarn.lock',
 	'!**/yarn-error.log',
 	'!**/fixtures/**/*'
@@ -70,6 +71,7 @@ module.exports.copyrightFilter = [
 	'!**/*.yml',
 	'!**/*.md',
 	'!package.nls.json',
+	'!**/package-lock.json',
 	'!**/*.svg',
 	'!src/integrations/gitlens/gitlens.d.ts',
 	'!**/fixtures/**'