Can fix this error Type error: 34 | checkFields<Diff<PageProps, FirstArg<TEntry['default']>, 'default'>>()

[lakshmiganesh0925]

.next/types/app/patients/[userId]/new-appointment/page.ts:34:29 Type error: Type 'SearchParamProps' does not satisfy the constraint 'PageProps'. Types of property 'params' are incompatible. Type '{ userId: string; } | Promise<{ userId: string; }>' is not assignable to type 'Promise | undefined'. Type '{ userId: string; }' is missing the following properties from type 'Promise': then, catch, finally, [Symbol.toStringTag] 32 | 33 | // Check the prop type of the entry function > 34 | checkFields<Diff<PageProps, FirstArg<TEntry['default']>, 'default'>>() | ^ 35 | 36 | // Check the arguments and return type of the generateMetadata function 37 | if ('generateMetadata' in entry) { Static worker exited with code: 1 and signal: null

// File: C:\Users\Ganesh\Desktop\HealthCheckup\nxtcheckup\app\patients[userId]\new-appointment\page.tsx
import * as entry from '../../../../../../app/patients/[userId]/new-appointment/page.js'
import type { ResolvingMetadata, ResolvingViewport } from 'next/dist/lib/metadata/types/metadata-interface.js'

type TEntry = typeof import('../../../../../../app/patients/[userId]/new-appointment/page.js')

type SegmentParams = T extends Record<string, any>
? { [K in keyof T]: T[K] extends string ? string | string[] | undefined : never }
: T

// Check that the entry is a valid entry
checkFields<Diff<{
default: Function
config?: {}
generateStaticParams?: Function
revalidate?: RevalidateRange | false
dynamic?: 'auto' | 'force-dynamic' | 'error' | 'force-static'
dynamicParams?: boolean
fetchCache?: 'auto' | 'force-no-store' | 'only-no-store' | 'default-no-store' | 'default-cache' | 'only-cache' | 'force-cache'
preferredRegion?: 'auto' | 'global' | 'home' | string | string[]
runtime?: 'nodejs' | 'experimental-edge' | 'edge'
maxDuration?: number

metadata?: any
generateMetadata?: Function
viewport?: any
generateViewport?: Function
experimental_ppr?: boolean

}, TEntry, ''>>()

// Check the prop type of the entry function
checkFields<Diff<PageProps, FirstArg<TEntry['default']>, 'default'>>()

// Check the arguments and return type of the generateMetadata function
if ('generateMetadata' in entry) {
checkFields<Diff<PageProps, FirstArg<MaybeField<TEntry, 'generateMetadata'>>, 'generateMetadata'>>()
checkFields<Diff<ResolvingMetadata, SecondArg<MaybeField<TEntry, 'generateMetadata'>>, 'generateMetadata'>>()
}

// Check the arguments and return type of the generateViewport function
if ('generateViewport' in entry) {
checkFields<Diff<PageProps, FirstArg<MaybeField<TEntry, 'generateViewport'>>, 'generateViewport'>>()
checkFields<Diff<ResolvingViewport, SecondArg<MaybeField<TEntry, 'generateViewport'>>, 'generateViewport'>>()
}

// Check the arguments and return type of the generateStaticParams function
if ('generateStaticParams' in entry) {
checkFields<Diff<{ params: SegmentParams }, FirstArg<MaybeField<TEntry, 'generateStaticParams'>>, 'generateStaticParams'>>()
checkFields<Diff<{ tag: 'generateStaticParams', return_type: any[] | Promise<any[]> }, { tag: 'generateStaticParams', return_type: ReturnType<MaybeField<TEntry, 'generateStaticParams'>> }>>()
}

export interface PageProps {
params?: Promise
searchParams?: Promise
}
export interface LayoutProps {
children?: React.ReactNode

params?: Promise
}

// =============
// Utility types
type RevalidateRange = T extends { revalidate: any } ? NonNegative<T['revalidate']> : never

// If T is unknown or any, it will be an empty {} type. Otherwise, it will be the same as Omit<T, keyof Base>.
type OmitWithTag<T, K extends keyof any, _M> = Omit<T, K>
type Diff<Base, T extends Base, Message extends string = ''> = 0 extends (1 & T) ? {} : OmitWithTag<T, keyof Base, Message>

type FirstArg = T extends (...args: [infer T, any]) => any ? unknown extends T ? any : T : never
type SecondArg = T extends (...args: [any, infer T]) => any ? unknown extends T ? any : T : never
type MaybeField<T, K extends string> = T extends { [k in K]: infer G } ? G extends Function ? G : never : never

function checkFields<_ extends { [k in keyof any]: never }>() {}

// https://github.com/sindresorhus/type-fest
type Numeric = number | bigint
type Zero = 0 | 0n
type Negative = T extends Zero ? never : ${T} extends -${string} ? T : never
type NonNegative = T extends Zero ? T : Negative extends never ? T : 'invalid_negative_number'
Type 'SearchParamProps' does not satisfy the constraint 'PageProps'.
Types of property 'params' are incompatible.
Type '{ userId: string; } | Promise<{ userId: string; }>' is not assignable to type 'Promise | undefined'.
Type '{ userId: string; }' is missing the following properties from type 'Promise': then, catch, finally, [Symbol.toStringTag]

[Davidon4]

Change the name of the file from page. It is an issue with next router. You can call it new-appointment.tsx