React is removing Server Context (it was never documented) and Next never fully implemented it anyway. This removes any references to server context APIs (entirely internal) which is now required since the latest React canary no longer exposes these APIs.

Author: gnoff

packages/next/src/server/app-render/app-render.tsx

@@ -104,7 +104,6 @@ export type AppRenderContext = AppRenderBaseContext & {
   pagePath: string
   clientReferenceManifest: ClientReferenceManifest
   assetPrefix: string
-  serverContexts: ServerContext[]
   flightDataRendererErrorHandler: ErrorHandler
   serverComponentsErrorHandler: ErrorHandler
   isNotFoundPath: boolean
@@ -290,7 +289,6 @@ async function generateFlight(
       : buildIdFlightDataPair,
     ctx.clientReferenceManifest.clientModules,
     {
-      context: ctx.serverContexts,
       onError: ctx.flightDataRendererErrorHandler,
     }
   ).pipeThrough(createBufferedTransformStream())
@@ -525,15 +523,6 @@ async function renderToHTMLOrFlightImpl(
     : query
   const searchParamsProps = { searchParams: providedSearchParams }
 
-  /**
-   * Server Context is specifically only available in Server Components.
-   * It has to hold values that can't change while rendering from the common layout down.
-   * An example of this would be that `headers` are available but `searchParams` are not because that'd mean we have to render from the root layout down on all requests.
-   */
-  const serverContexts: Array<[string, any]> = [
-    ['WORKAROUND', null], // TODO-APP: First value has a bug currently where the value is not set on the second request: https://github.com/facebook/react/issues/24849
-  ]
-
   /**
    * Dynamic parameters. E.g. when you visit `/dashboard/vercel` which is rendered by `/dashboard/[slug]` the value will be {"slug": "vercel"}.
    */
@@ -561,7 +550,6 @@ async function renderToHTMLOrFlightImpl(
     assetPrefix,
     flightDataRendererErrorHandler,
     serverComponentsErrorHandler,
-    serverContexts,
     isNotFoundPath,
     res,
   }
@@ -580,7 +568,6 @@ async function renderToHTMLOrFlightImpl(
   const serverComponentsRenderOpts = {
     inlinedDataTransformStream: new TransformStream<Uint8Array, Uint8Array>(),
     clientReferenceManifest,
-    serverContexts,
     formState: null,
   }
 

packages/next/src/server/app-render/create-server-components-renderer.tsx

@@ -16,14 +16,10 @@ export function createServerComponentRenderer<Props>(
   {
     inlinedDataTransformStream,
     clientReferenceManifest,
-    serverContexts,
     formState,
   }: {
     inlinedDataTransformStream: TransformStream<Uint8Array, Uint8Array>
     clientReferenceManifest: NonNullable<RenderOpts['clientReferenceManifest']>
-    serverContexts: Array<
-      [ServerContextName: string, JSONValue: Object | number | string]
-    >
     formState: null | any
   },
   serverComponentsErrorHandler: ReturnType<typeof createErrorHandler>,
@@ -36,7 +32,6 @@ export function createServerComponentRenderer<Props>(
         <ComponentToRender {...(props as any)} />,
         clientReferenceManifest.clientModules,
         {
-          context: serverContexts,
           onError: serverComponentsErrorHandler,
         }
       )