Fix: When using create-next-app with the --api flag combined with --yes \(or in CI\) without explicitly specifying a linter option\, the opts.ultracite variable is never initialized and remains undefined\. This causes a type mismatch when passed to createApp()\.

Author: vercel[bot]

packages/create-next-app/index.ts

@@ -489,6 +489,11 @@ async function run(): Promise<void> {
       opts.ultracite = false
       preferences.linter = 'none'
       preferences.eslint = false
+    } else if (opts.api) {
+      // When using --api without an explicit linter flag, default to no linter
+      opts.eslint = false
+      opts.biome = false
+      opts.ultracite = false
     }
 
     if (