From 31077aeb83179fdfeafbb44948fb2914ad64b9b2 Mon Sep 17 00:00:00 2001
From: Daniel Roe <daniel@roe.dev>
Date: Tue, 14 Jan 2025 10:34:20 +0000
Subject: [PATCH] perf(nuxt): avoid checking fs for existence of scanned pages
 (#30581)

---
 packages/nuxt/src/pages/utils.ts | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/packages/nuxt/src/pages/utils.ts b/packages/nuxt/src/pages/utils.ts
index 7f078eed28..327521a10d 100644
--- a/packages/nuxt/src/pages/utils.ts
+++ b/packages/nuxt/src/pages/utils.ts
@@ -68,7 +68,10 @@ export async function resolvePagesRoutes (nuxt = useNuxt()): Promise<NuxtPage[]>
     return pages
   }
 
-  const augmentCtx = { extraExtractionKeys: nuxt.options.experimental.extraPageMetaExtractionKeys }
+  const augmentCtx = {
+    extraExtractionKeys: nuxt.options.experimental.extraPageMetaExtractionKeys,
+    fullyResolvedPaths: new Set(scannedFiles.map(file => file.absolutePath)),
+  }
   if (shouldAugment === 'after-resolve') {
     await nuxt.callHook('pages:extend', pages)
     await augmentPages(pages, nuxt.vfs, augmentCtx)
@@ -154,6 +157,7 @@ export function generateRoutesFromFiles (files: ScannedFile[], options: Generate
 }
 
 interface AugmentPagesContext {
+  fullyResolvedPaths?: Set<string>
   pagesToSkip?: Set<string>
   augmentedPages?: Set<string>
   extraExtractionKeys?: string[]
@@ -163,7 +167,9 @@ export async function augmentPages (routes: NuxtPage[], vfs: Record<string, stri
   ctx.augmentedPages ??= new Set()
   for (const route of routes) {
     if (route.file && !ctx.pagesToSkip?.has(route.file)) {
-      const fileContent = route.file in vfs ? vfs[route.file]! : fs.readFileSync(await resolvePath(route.file), 'utf-8')
+      const fileContent = route.file in vfs
+        ? vfs[route.file]!
+        : fs.readFileSync(ctx.fullyResolvedPaths?.has(route.file) ? route.file : await resolvePath(route.file), 'utf-8')
       const routeMeta = await getRouteMeta(fileContent, route.file, ctx.extraExtractionKeys)
       if (route.meta) {
         routeMeta.meta = { ...routeMeta.meta, ...route.meta }