ci: add GitHub Actions for CI and auto-publish on release

Author: chenliuyun

.github/workflows/ci.yml

@@ -0,0 +1,24 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [18.x, 20.x, 22.x]
+    steps:
+      - uses: actions/checkout@v4
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: npm
+      - run: npm ci
+      - run: npm run build
+      - run: npm test

.github/workflows/publish.yml

@@ -0,0 +1,33 @@
+name: Publish to npm
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20.x
+          registry-url: https://registry.npmjs.org
+          cache: npm
+      - run: npm ci
+      - run: npm run build
+      - run: npm test
+      - name: Verify tag matches package.json version
+        run: |
+          PKG_VERSION=$(node -p "require('./package.json').version")
+          TAG_VERSION="${GITHUB_REF_NAME#v}"
+          if [ "$PKG_VERSION" != "$TAG_VERSION" ]; then
+            echo "Tag $TAG_VERSION does not match package.json version $PKG_VERSION"
+            exit 1
+          fi
+      - run: npm publish --provenance --access public
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}