ci: Add CI tests.

.github/workflows/test.yml

@@ -0,0 +1,35 @@
+name: Test
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node: [20, 22]
+
+    name: Node ${{ matrix.node }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Node ${{ matrix.node }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node }}
+          cache: "npm"
+
+      - name: Install Node dependencies
+        run: npm ci
+
+      - name: Run linter
+        run: npm run lint
+
+      - name: Run tests
+        run: npm run test

.npmignore

@@ -1,3 +1,4 @@
+.github
 .temp
 .DS_Store
 node_modules/