From a5dca628c003554bd43311b82559c86ddf456f40 Mon Sep 17 00:00:00 2001
From: Wyatt Johnson <accounts+github@wyattjoh.ca>
Date: Fri, 22 Dec 2023 20:24:49 -0700
Subject: [PATCH] fix: replaced array with object

---
 packages/next/src/build/collect-build-traces.ts |  4 ++--
 packages/next/src/build/index.ts                | 14 +++++---------
 2 files changed, 7 insertions(+), 11 deletions(-)

diff --git a/packages/next/src/build/collect-build-traces.ts b/packages/next/src/build/collect-build-traces.ts
index a6439752defe2..d05fc05732bfc 100644
--- a/packages/next/src/build/collect-build-traces.ts
+++ b/packages/next/src/build/collect-build-traces.ts
@@ -78,7 +78,7 @@ export async function collectBuildTraces({
   staticPages: string[]
   hasSsrAmpPages: boolean
   outputFileTracingRoot: string
-  edgeRoutes: readonly string[] | undefined
+  edgeRoutes: Readonly<Record<string, boolean>> | undefined
   nextBuildSpan?: Span
   config: NextConfigComplete
   buildTraceContext?: BuildTraceContext
@@ -642,7 +642,7 @@ export async function collectBuildTraces({
         }
 
         // Edge routes have no trace files.
-        if (edgeRoutes && edgeRoutes.includes(route)) {
+        if (edgeRoutes && route in edgeRoutes) {
           return
         }
 
diff --git a/packages/next/src/build/index.ts b/packages/next/src/build/index.ts
index ec14ebfb139c1..7e0077db10b39 100644
--- a/packages/next/src/build/index.ts
+++ b/packages/next/src/build/index.ts
@@ -1946,15 +1946,11 @@ export default async function build(
       if (!isGenerateMode && config.outputFileTracing && !buildTracesPromise) {
         // Get all the edge routes from the pageInfos. If the runtime is set as
         // edge, then we know it's an edge route.
-        const edgeRoutes: ReadonlyArray<string> = Array.from(
-          pageInfos.entries()
-        ).reduce<string[]>((acc, [route, { runtime }]) => {
-          if (runtime === 'edge') {
-            acc.push(route)
-          }
-
-          return acc
-        }, [])
+        const edgeRoutes: Record<string, boolean> = {}
+        pageInfos.forEach((pageInfo, route) => {
+          if (pageInfo.runtime !== 'edge') return
+          edgeRoutes[route] = true
+        })
 
         buildTracesPromise = collectBuildTraces({
           dir,