Fix router CPU profiling (#54497)

Since we've merged the app and router processes, the `__NEXT_PRIVATE_CPU_PROFILE` env was missing.
vercel · Aug 27, 2023 · 52e0b1d · 52e0b1d
1 parent 40b3226
commit 52e0b1d
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/packages/next/src/server/lib/start-server.ts b/packages/next/src/server/lib/start-server.ts
@@ -18,6 +18,11 @@ import {
 import { checkIsNodeDebugging } from './is-node-debugging'
 const debug = setupDebug('next:start-server')
 
+if (process.env.NEXT_CPU_PROF) {
+  process.env.__NEXT_PRIVATE_CPU_PROFILE = `CPU.router`
+  require('./cpu-profile')
+}
+
 export interface StartServerOptions {
   dir: string
   port: number