Workflow setup and edit build in package to avoid errors

.github/workflows/CI.yaml

@@ -0,0 +1,17 @@
+name: Continuos Integration
+on: pull_request
+
+jobs:
+  continous-integration:
+    runs-on: ubuntu-latest
+  steps:
+    - uses: action/checkout@v3
+    - name: use Node.JS
+      uses: actions/setup-node@v2
+      with:
+        node-version: 21.x
+    - name: run, install and test
+      run: |
+        npm install
+        npm run build
+        npm run test