CI on pull requests

.github/workflows/ci.yml

@@ -0,0 +1,41 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches: [main]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  check:
+    name: Node ${{ matrix.node }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        node: [20, 22]
+    steps:
+      - uses: actions/checkout@v4
+
+      # The pnpm version comes from package.json's packageManager.
+      - uses: pnpm/action-setup@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node }}
+          cache: pnpm
+
+      - run: pnpm install --frozen-lockfile
+
+      - name: Lint
+        run: pnpm lint
+
+      - name: Test
+        run: pnpm test
+
+      # vue-tsc over the library sources, then the bundle and the styles.
+      - name: Typecheck and build
+        run: pnpm build