Add npm test Ci step

.github/workflows/build.yaml

@@ -0,0 +1,16 @@
+name: Run npm test
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Use Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: '20.x'
+      - run: npm test

package.json

@@ -4,7 +4,8 @@
   "description": "",
   "main": "index.js",
   "scripts": {
-    "test": "npx vitest",
+    "test": "npx vitest run",
+    "test:watch": "npx vitest watch",
     "start": "vite --open",
     "build": "vite build",
     "preview": "vite preview"