Wrong type for createRequestHandler when middleware Feature enabled on 7.3.0-pre.0

[tobiasfoerg]

I'm using React Router as a...

framework

Reproduction

see below

System Info

System:
    OS: macOS 15.3.1
    CPU: (8) arm64 Apple M2
    Memory: 150.70 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 22.12.0 - ~/.local/state/fnm_multishells/93155_1741110880467/bin/node
    npm: 10.9.0 - ~/.local/state/fnm_multishells/93155_1741110880467/bin/npm
    pnpm: 10.5.2 - ~/Library/pnpm/pnpm
  Browsers:
    Chrome: 133.0.6943.142
    Safari: 18.3
  npmPackages:
    @react-router/cloudflare: ^7.3.0-pre.0 => 7.3.0-pre.0
    @react-router/dev: ^7.3.0-pre.0 => 7.3.0-pre.0
    @react-router/fs-routes: ^7.3.0-pre.0 => 7.3.0-pre.0
    react-router: ^7.3.0-pre.0 => 7.3.0-pre.0
    vite: ^6.2.0 => 6.2.0

Used Package Manager

pnpm

Expected Behavior

The request handler type should be unstable_InitialContext instead of unstable_RouterContextProvider

react-router/packages/react-router/lib/server-runtime/server.ts

Lines 41 to 46 in 5f6b341

	export type RequestHandler = (
	request: Request,
	loadContext?: MiddlewareEnabled extends true
	? unstable_RouterContextProvider
	: AppLoadContext
	) => Promise<Response>;

see usage

react-router/packages/react-router/lib/server-runtime/server.ts

Lines 90 to 97 in 5f6b341

	return async function requestHandler(request, initialContext) {
	_build = typeof build === "function" ? await build() : build;
	let loadContext = _build.future.unstable_middleware
	? new unstable_RouterContextProvider(
	initialContext as unknown as unstable_InitialContext
	)
	: initialContext || {};

Actual Behavior

see description

[brophdawg11]

This should be fixed by #13204 and available in the next release 👍

[github-actions]

🤖 Hello there,

We just published version 7.4.0 which involves this issue. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!