Fixed Line 9 issue in main.yml

.github/workflows/main.yml

@@ -1,27 +1,28 @@
-name: Lint & Test
+name: CI
 
 on:
   push:
-    branches: [main]
   pull_request:
-    branches: [main]
-  workflow_dispatch:
 
 jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      # Use Node 20 (required for @typescript-eslint v8 / structuredClone)
+      - name: Use Node.js 20
+        uses: actions/setup-node@v4
         with:
-          node-version: "16"
-      - name: Setup
-        run: |
-          npm install
-          npm run build
+          node-version: 20
+          cache: 'npm'
+
+      - name: Install deps (clean)
+        run: npm ci
+
       - name: Run eslint
-        run: |
-          npm run lint
+        run: npm run lint
+
       - name: Run tests
-        run: |
-          npm run test
+        run: npm test