chore: pkg.pr.new preview with label and comment (#18211)

.github/workflows/preview-release.yml

@@ -0,0 +1,44 @@
+name: Preview release
+
+env:
+  # install playwright binary manually (because pnpm only runs install script once)
+  PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: "1"
+
+permissions:
+  pull-requests: write
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    types: [labeled]
+
+jobs:
+  preview:
+    if: >
+      github.repository == 'vitejs/vite' &&
+      (github.event_name == 'push' ||
+      (github.event.issue.pull_request && contains(github.event.pull_request.labels.*.name, 'trigger: preview')))
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install pnpm
+        uses: pnpm/[email protected]
+
+      - name: Install dependencies
+        run: pnpm install
+
+      - name: Build
+        working-directory: ./packages/vite
+        run: pnpm build
+
+      - run: pnpm dlx [email protected] publish --compact --pnpm ./packages/vite
+
+      - if: github.event_name != 'push'
+        run: |
+          gh issue edit ${{ github.event.issue.number }} --remove-label "trigger: preview" --repo ${{ github.repository }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}