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'use client'
import { skipToken } from '@tanstack/query-core'
import { useQueries } from './useQueries'
import { defaultThrowOnError } from './suspense'
import type { UseSuspenseQueryOptions, UseSuspenseQueryResult } from './types'
import type {
DefaultError,
QueryClient,
QueryFunction,
ThrowOnError,
} from '@tanstack/query-core'
// Avoid TS depth-limit error in case of large array literal
type MAXIMUM_DEPTH = 20
// Widen the type of the symbol to enable type inference even if skipToken is not immutable.
type SkipTokenForUseQueries = symbol
type GetUseSuspenseQueryOptions<T> =
// Part 1: responsible for applying explicit type parameter to function arguments, if object { queryFnData: TQueryFnData, error: TError, data: TData }
T extends {
queryFnData: infer TQueryFnData
error?: infer TError
data: infer TData
}
? UseSuspenseQueryOptions<TQueryFnData, TError, TData>
: T extends { queryFnData: infer TQueryFnData; error?: infer TError }
? UseSuspenseQueryOptions<TQueryFnData, TError>
: T extends { data: infer TData; error?: infer TError }
? UseSuspenseQueryOptions<unknown, TError, TData>
: // Part 2: responsible for applying explicit type parameter to function arguments, if tuple [TQueryFnData, TError, TData]
T extends [infer TQueryFnData, infer TError, infer TData]
? UseSuspenseQueryOptions<TQueryFnData, TError, TData>
: T extends [infer TQueryFnData, infer TError]
? UseSuspenseQueryOptions<TQueryFnData, TError>
: T extends [infer TQueryFnData]
? UseSuspenseQueryOptions<TQueryFnData>
: // Part 3: responsible for inferring and enforcing type if no explicit parameter was provided
T extends {
queryFn?:
| QueryFunction<infer TQueryFnData, infer TQueryKey>
| SkipTokenForUseQueries
select?: (data: any) => infer TData
throwOnError?: ThrowOnError<any, infer TError, any, any>
}
? UseSuspenseQueryOptions<
TQueryFnData,
TError,
TData,
TQueryKey
>
: T extends {
queryFn?:
| QueryFunction<infer TQueryFnData, infer TQueryKey>
| SkipTokenForUseQueries
throwOnError?: ThrowOnError<any, infer TError, any, any>
}
? UseSuspenseQueryOptions<
TQueryFnData,
TError,
TQueryFnData,
TQueryKey
>
: // Fallback
UseSuspenseQueryOptions
type GetUseSuspenseQueryResult<T> =
// Part 1: responsible for mapping explicit type parameter to function result, if object
T extends { queryFnData: any; error?: infer TError; data: infer TData }
? UseSuspenseQueryResult<TData, TError>
: T extends { queryFnData: infer TQueryFnData; error?: infer TError }
? UseSuspenseQueryResult<TQueryFnData, TError>
: T extends { data: infer TData; error?: infer TError }
? UseSuspenseQueryResult<TData, TError>
: // Part 2: responsible for mapping explicit type parameter to function result, if tuple
T extends [any, infer TError, infer TData]
? UseSuspenseQueryResult<TData, TError>
: T extends [infer TQueryFnData, infer TError]
? UseSuspenseQueryResult<TQueryFnData, TError>
: T extends [infer TQueryFnData]
? UseSuspenseQueryResult<TQueryFnData>
: // Part 3: responsible for mapping inferred type to results, if no explicit parameter was provided
T extends {
queryFn?:
| QueryFunction<infer TQueryFnData, any>
| SkipTokenForUseQueries
select?: (data: any) => infer TData
throwOnError?: ThrowOnError<any, infer TError, any, any>
}
? UseSuspenseQueryResult<
unknown extends TData ? TQueryFnData : TData,
unknown extends TError ? DefaultError : TError
>
: T extends {
queryFn?:
| QueryFunction<infer TQueryFnData, any>
| SkipTokenForUseQueries
throwOnError?: ThrowOnError<any, infer TError, any, any>
}
? UseSuspenseQueryResult<
TQueryFnData,
unknown extends TError ? DefaultError : TError
>
: // Fallback
UseSuspenseQueryResult
/**
* SuspenseQueriesOptions reducer recursively unwraps function arguments to infer/enforce type param
*/
export type SuspenseQueriesOptions<
T extends Array<any>,
TResults extends Array<any> = [],
TDepth extends ReadonlyArray<number> = [],
> = TDepth['length'] extends MAXIMUM_DEPTH
? Array<UseSuspenseQueryOptions>
: T extends []
? []
: T extends [infer Head]
? [...TResults, GetUseSuspenseQueryOptions<Head>]
: T extends [infer Head, ...infer Tails]
? SuspenseQueriesOptions<
[...Tails],
[...TResults, GetUseSuspenseQueryOptions<Head>],
[...TDepth, 1]
>
: Array<unknown> extends T
? T
: // If T is *some* array but we couldn't assign unknown[] to it, then it must hold some known/homogenous type!
// use this to infer the param types in the case of Array.map() argument
T extends Array<
UseSuspenseQueryOptions<
infer TQueryFnData,
infer TError,
infer TData,
infer TQueryKey
>
>
? Array<
UseSuspenseQueryOptions<TQueryFnData, TError, TData, TQueryKey>
>
: // Fallback
Array<UseSuspenseQueryOptions>
/**
* SuspenseQueriesResults reducer recursively maps type param to results
*/
export type SuspenseQueriesResults<
T extends Array<any>,
TResults extends Array<any> = [],
TDepth extends ReadonlyArray<number> = [],
> = TDepth['length'] extends MAXIMUM_DEPTH
? Array<UseSuspenseQueryResult>
: T extends []
? []
: T extends [infer Head]
? [...TResults, GetUseSuspenseQueryResult<Head>]
: T extends [infer Head, ...infer Tails]
? SuspenseQueriesResults<
[...Tails],
[...TResults, GetUseSuspenseQueryResult<Head>],
[...TDepth, 1]
>
: T extends Array<
UseSuspenseQueryOptions<
infer TQueryFnData,
infer TError,
infer TData,
any
>
>
? // Dynamic-size (homogenous) UseQueryOptions array: map directly to array of results
Array<
UseSuspenseQueryResult<
unknown extends TData ? TQueryFnData : TData,
unknown extends TError ? DefaultError : TError
>
>
: // Fallback
Array<UseSuspenseQueryResult>
export function useSuspenseQueries<
T extends Array<any>,
TCombinedResult = SuspenseQueriesResults<T>,
>(
options: {
queries: readonly [...SuspenseQueriesOptions<T>]
combine?: (result: SuspenseQueriesResults<T>) => TCombinedResult
},
queryClient?: QueryClient,
): TCombinedResult {
return useQueries(
{
...options,
queries: options.queries.map((query) => {
if (process.env.NODE_ENV !== 'production') {
if (query.queryFn === skipToken) {
console.error('skipToken is not allowed for useSuspenseQueries')
}
}
return {
...query,
suspense: true,
throwOnError: defaultThrowOnError,
enabled: true,
placeholderData: undefined,
}
}),
} as any,
queryClient,
)
}
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