Update add module functionality to allow multiple numbers as args.

Add a lint job in CI workflow.

Author: WebDevCaptain

.github/workflows/ci.yml

@@ -17,6 +17,30 @@ on:
   workflow_dispatch:
 
 jobs:
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Clone repo
+        uses: actions/checkout@v4
+
+      - name: Install NodeJS
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22.12.0
+
+      - name: Cache npm dependencies
+        uses: actions/cache@v4
+        with:
+          path: ~/.npm
+          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run linter
+        run: npm run lint
+
   test:
     runs-on: ubuntu-latest
 

src/add.js

@@ -1,8 +1,8 @@
 /**
- * @param {number} a
- * @param {number} b
- * @returns {number}
+ * Add any number of arguments
+ * @param {...number} args - The numbers to be added
+ * @returns {number} - sum of the numbers
  */
-export function add(a, b) {
-  return a + b;
+export function add(...args) {
+  return args.reduce((prev, curr) => prev + curr, 0);
 }