eslint.rb in nextgen-0.19.0

- old
+ new

@@ -22,7 +22,33 @@
 
 say_git "Add eslint to default rake task"
 copy_file "lib/tasks/eslint.rake"
 add_lint_task "eslint"
 
+if File.exist?(".github/workflows/ci.yml")
+  say_git "Add eslint job to CI workflow"
+  node_spec = File.exist?(".node-version") ? 'node-version-file: ".node-version"' : 'node-version: "lts/*"'
+  inject_into_file ".github/workflows/ci.yml", <<-YAML, after: /^jobs:\n/
+  eslint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Node
+        uses: actions/setup-node@v4
+        with:
+          #{node_spec}
+          cache: yarn
+
+      - name: Install Yarn packages
+        run: npx --yes ci
+
+      - name: Lint JavaScript files with eslint
+        run: yarn lint:js
+
+  YAML
+end
+
 say_git "Auto-correct any existing issues"
 run "yarn fix:js", capture: true