chore: add pkg.pr.new (#6362)

Co-authored-by: Hiroshi Ogawa <hi.ogawa.zz@gmail.com>

.github/workflows/cr.yml

@@ -0,0 +1,46 @@
+name: CR
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    types: [opened, synchronize, labeled]
+
+permissions: {}
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.number }}
+  cancel-in-progress: true
+
+jobs:
+  release:
+    if: github.repository == 'vitest-dev/vitest' && (github.ref == 'refs/heads/main' || contains(github.event.pull_request.labels.*.name, 'cr-tracked'))
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
+
+      - name: Set node version to 20
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          registry-url: https://registry.npmjs.org/
+          cache: pnpm
+
+      - name: Install
+        run: pnpm install --frozen-lockfile --prefer-offline
+        env:
+          PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: '1'
+
+      - name: Build
+        run: pnpm build
+        env:
+          NO_VITE_TEST_WATCHER_DEBUG: '1'
+
+      - name: Publish to StackBlitz
+        run: pnpx pkg-pr-new publish --compact --no-template --pnpm './packages/*'

docs/guide/index.md

@@ -287,7 +287,9 @@ Thanks for choosing Vitest!
 
 ## Using Unreleased Commits
 
-If you can't wait for a new release to test the latest features, you will need to clone the [vitest repo](https://github.com/vitest-dev/vitest) to your local machine and then build and link it yourself ([pnpm](https://pnpm.io/) is required):
+Each commit on main branch and a PR with a `cr-tracked` label are published to [pkg.pr.new](https://github.com/stackblitz-labs/pkg.pr.new). You can install it by `npm i https://pkg.pr.new/vitest@{commit}`.
+
+If you want to test your own modification locally, you can build and link it yourself ([pnpm](https://pnpm.io/) is required):
 
 ```bash
 git clone https://github.com/vitest-dev/vitest.git