add 16 test

Author: overbalance

bundler-tests/browser/nextjs-16-edge/next.test.ts

@@ -0,0 +1,22 @@
+/**
+ * Next.js 16+ uses Turbopack, which lacks callbacks for build errors or warnings.
+ * This script runs the build and fails if Turbopack reports any warnings.
+ */
+import { execSync } from 'node:child_process';
+import path from 'node:path';
+
+const testDir = path.dirname(new URL(import.meta.url).pathname);
+
+// Install dependencies and run build, capturing both stdout and stderr
+const output = execSync('npm run build 2>&1', {
+  cwd: testDir,
+  encoding: 'utf-8',
+});
+
+const hasWarning = /Turbopack build encountered/.test(output);
+if (hasWarning) {
+  console.error('Build produced warnings:\n', output);
+  process.exit(1);
+}
+
+console.log('Build completed without warnings');