github action

.github/workflows/ci.yml

@@ -0,0 +1,21 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Use Node.js
+        uses: actions/setup-node@v1
+        with:
+          node-version: "18"
+      - name: Install dependencies
+        run: npm install
+      - name: Run tests
+        run: npm test
+      - name: Publish coverage
+        uses: coverallsapp/github-action@v2.2.0