Turbopack: Optimize addedRoutes and removedRoutes calculation (#83840)

timneutkens · web-flow · commit 1fc182445472 · 2025-09-16T21:52:05.000+02:00
## What? Apply suggestion from this review: #83829 (comment)
diff --git a/packages/next/src/server/dev/hot-reloader-turbopack.ts b/packages/next/src/server/dev/hot-reloader-turbopack.ts
@@ -619,10 +619,12 @@ export async function createHotReloaderTurbopack(
       const newRoutes = [...entrypoints.routes.keys()]
 
       const addedRoutes = newRoutes.filter(
-        (route) => !existingRoutes.includes(route)
+        (route) =>
+          !currentEntrypoints.app.has(route) &&
+          !currentEntrypoints.page.has(route)
       )
       const removedRoutes = existingRoutes.filter(
-        (route) => !newRoutes.includes(route)
+        (route) => !entrypoints.routes.has(route)
       )
 
       processTopLevelIssues(currentTopLevelIssues, entrypoints)

Original file line number	Diff line number	Diff line change
`@@ -619,10 +619,12 @@ export async function createHotReloaderTurbopack(`
`619`	`619`	`const newRoutes = [...entrypoints.routes.keys()]`
`620`	`620`
`621`	`621`	`const addedRoutes = newRoutes.filter(`
`622`		`- (route) => !existingRoutes.includes(route)`
	`622`	`+ (route) =>`
	`623`	`+ !currentEntrypoints.app.has(route) &&`
	`624`	`+ !currentEntrypoints.page.has(route)`
`623`	`625`	`)`
`624`	`626`	`const removedRoutes = existingRoutes.filter(`
`625`		`- (route) => !newRoutes.includes(route)`
	`627`	`+ (route) => !entrypoints.routes.has(route)`
`626`	`628`	`)`
`627`	`629`
`628`	`630`	`processTopLevelIssues(currentTopLevelIssues, entrypoints)`