chore: Add linting in CI/CD pipeline (#665)

Add lint workflow in GitHub Actions pipeline

Co-authored-by: Melvin. L. Abraham <[email protected]>

.eslintrc.json

@@ -12,7 +12,8 @@
       "ecmaVersion": 12
   },
   "ignorePatterns": [
-    "*.min.js"
+    "*.min.js",
+    "**/lib/pv_workers/*.js"
   ],
   "rules": {
     "linebreak-style": "off",

.github/workflows/main.yml

@@ -36,3 +36,27 @@ jobs:
 
       - name: Build
         run: npm run dist:ci
+
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Set up Node.js environment
+        uses: actions/setup-node@v2
+        with:
+          node-version: 12.x
+
+      - name: Cache Dependencies
+        uses: actions/cache@v2
+        with:
+          path: ~/.npm
+          key: ${{ matrix.os }}-node-${{ matrix.node-version }}-${{ hashFiles('**/package-lock.json') }}
+
+      - name: Install Dependencies
+        run: npm ci
+
+      - name: Run ESLint
+        run: npm run lint