applyWSSHandler yells at context error in express

I used the example code from docs. My applyWSSHandler code is:

const handler = applyWSSHandler({wss, router: appRouter, createContext});

const handler = applyWSSHandler({wss, router: appRouter, createContext});

I see the next error on createContext:

TS2322: Type '({ req, res, }: CreateExpressContextOptions) => Promise<{ req: Request<ParamsDictionary, any, any, ParsedQs, Record<string, any>>; res: Response<...>; }>' is not assignable to type 'NodeHTTPCreateContextFn<CreateRouterInner<RootConfig<{ ctx: { req: Request<ParamsDictionary, any, any, ParsedQs, Record<string, any>>; res: Response<any, Record<string, any>>; }; meta: object; errorShape: { ...; }; transformer

TS2322: Type '({ req, res, }: CreateExpressContextOptions) => Promise<{ req: Request<ParamsDictionary, any, any, ParsedQs, Record<string, any>>; res: Response<...>; }>' is not assignable to type 'NodeHTTPCreateContextFn<CreateRouterInner<RootConfig<{ ctx: { req: Request<ParamsDictionary, any, any, ParsedQs, Record<string, any>>; res: Response<any, Record<string, any>>; }; meta: object; errorShape: { ...; }; transformer

The createContext function was copied from examples as well. I just made it to return req and res instead of the empty object:

export async function createContext({req, res}: trpcExpress.CreateExpressContextOptions) {return {req, res}}

export async function createContext({req, res}: trpcExpress.CreateExpressContextOptions) {return {req, res}}

How should I change the createContext function to make it work? I have a problem while trying to write tests probably because of this too.

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