Add undefined

vercel · Nov 11, 2021 · f92123c · f92123c
1 parent 454a7b5
commit f92123c
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diff --git a/docs/api-reference/next/server.md b/docs/api-reference/next/server.md
@@ -15,7 +15,7 @@ These native Web API objects are extended to give you more control over how you
 The function signature is defined as follows:
 
 ```ts
-type NextMiddlewareResult = NextResponse | Response | null
+type NextMiddlewareResult = NextResponse | Response | null | undefined
 
 type NextMiddleware = (
   request: NextRequest,

diff --git a/packages/next/server/web/types.ts b/packages/next/server/web/types.ts
@@ -33,7 +33,7 @@ export interface FetchEventResult {
   waitUntil: Promise<any>
 }
 
-type NextMiddlewareResult = NextResponse | Response | null
+export type NextMiddlewareResult = NextResponse | Response | null | undefined
 
 export type NextMiddleware = (
   request: NextRequest,