From 5487354b5123dbe7fe5676733f43321ddfc9e09d Mon Sep 17 00:00:00 2001
From: Jimmy Lai <laijimmy0@gmail.com>
Date: Wed, 12 Oct 2022 12:25:31 +0200
Subject: [PATCH] lazy evla headers

---
 packages/next/client/components/hooks-server.ts          | 2 +-
 packages/next/client/components/request-async-storage.ts | 2 +-
 packages/next/server/app-render.tsx                      | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/packages/next/client/components/hooks-server.ts b/packages/next/client/components/hooks-server.ts
index 63a906e03f5e5..beb0ad95414c7 100644
--- a/packages/next/client/components/hooks-server.ts
+++ b/packages/next/client/components/hooks-server.ts
@@ -24,7 +24,7 @@ export function headers(): Headers {
       ? requestAsyncStorage.getStore()!
       : requestAsyncStorage
 
-  return requestStore.headers
+  return requestStore.headers()
 }
 
 export function previewData() {
diff --git a/packages/next/client/components/request-async-storage.ts b/packages/next/client/components/request-async-storage.ts
index fc1fff6841c9e..470ca75d90513 100644
--- a/packages/next/client/components/request-async-storage.ts
+++ b/packages/next/client/components/request-async-storage.ts
@@ -2,7 +2,7 @@ import type { AsyncLocalStorage } from 'async_hooks'
 import { Cookies } from '../../server/web/spec-extension/cookies'
 
 export interface RequestStore {
-  headers: Headers
+  headers: () => Headers
   cookies: Cookies
   previewData: any
 }
diff --git a/packages/next/server/app-render.tsx b/packages/next/server/app-render.tsx
index 45fbb227e6d4d..44501a9dcdc42 100644
--- a/packages/next/server/app-render.tsx
+++ b/packages/next/server/app-render.tsx
@@ -1572,7 +1572,7 @@ export async function renderToHTMLOrFlight(
   )
 
   const requestStore = {
-    headers: new ReadonlyHeaders(headersWithoutFlight(req.headers)),
+    headers: () => new ReadonlyHeaders(headersWithoutFlight(req.headers)),
     cookies: new ReadonlyNextCookies({
       headers: {
         get: (key) => {