fix tests and configuration files

* update dependencies

* Update .eslintrc.js

* Update .gitignore

* Create onpush.yml

* downgrade 2 packages causing test failure

.github/workflows/onpush.yml

@@ -0,0 +1,20 @@
+name: Node CI
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use Node.js
+      uses: actions/setup-node@v2
+      with:
+        node-version: 14.x
+    - name: npm install, test and lint
+      run: |
+        npm ci
+        npm run lint
+        npm run test