ci: add npm publish workflow

.github/workflows/publish-package-to-npmjs.yml

@@ -0,0 +1,68 @@
+name: Publish package to npmjs.com
+
+on:
+  workflow_dispatch:
+  release:
+    types: [published]
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    name: Build and test package
+    permissions:
+      contents: read
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-node@v6
+        with:
+          node-version: '22.x'
+          cache: 'npm'
+      - run: npm ci
+      - run: npm run typecheck
+      - run: npm run format:check
+      - run: npm run lint
+      - run: npm test
+
+  publish-to-npm:
+    name: Publish npm package to npmjs.com
+    needs: build
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-node@v6
+        with:
+          node-version: '22.x'
+          registry-url: 'https://registry.npmjs.org'
+
+      # Trusted publishing requires npm 11.5.1 or later
+      # https://docs.npmjs.com/trusted-publishers
+      - name: Update npm
+        run: npm install -g npm@latest
+
+      - name: Show npm version
+        run: npm -v
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build package for release
+        run: npm run build
+
+      - name: Publish to npmjs.com
+        run: >-
+          npm
+          --loglevel notice
+          publish
+          --provenance
+          --access public