Add package lock and eslint config (#711)

.github/workflows/node.js.yml

@@ -11,7 +11,6 @@ on:
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
 
     strategy:
@@ -19,10 +18,21 @@ jobs:
         node-version: [20.x, 18.x]
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v1
+      uses: actions/setup-node@v4
       with:
         node-version: ${{ matrix.node-version }}
     - run: npm ci
     - run: npm test
+
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/setup-node@v4
+      with:
+        node-version: 20.x
+    - run: npm ci
+    - run: npm run lint