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upstream-tanstack-query/packages/react-query/src/useSuspenseQueries.ts
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530 lines
19 KiB
TypeScript

'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
/**
* The `queries` array accepted by `useSuspenseQueries`. Recursively unwraps each tuple element so every
* entry's `queryFn`/`select` are inferred individually, up to 20 elements. An opaque array (e.g. `unknown[]`)
* is returned as-is; a non-tuple array of a known element type, or a tuple past 20 elements, falls back to a
* single homogeneous {@link UseSuspenseQueryOptions} type.
*
* @template T - The type of the `queries` array as written at the call site.
* @template TResults - The internal accumulator that this type builds during recursion. It is not meant
* to be set explicitly.
* @template TDepth - The internal recursion-depth counter, checked against the 20-element limit. It is not
* meant to be set explicitly.
*/
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/homogeneous 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>
/**
* The result type returned by `useSuspenseQueries`, when no `combine` is provided. Mirrors
* {@link SuspenseQueriesOptions}: each tuple element's result type is inferred individually, up to 20 elements.
* A non-tuple array is mapped per-element instead, still inferring each entry individually; only past 20
* elements does this fall back to a single homogeneous {@link UseSuspenseQueryResult} type.
*
* @template T - The type of the `queries` array, as inferred by {@link SuspenseQueriesOptions}.
* @template TResults - The internal accumulator that this type builds during recursion. It is not meant
* to be set explicitly.
* @template TDepth - The internal recursion-depth counter, checked against the 20-element limit. It is not
* meant to be set explicitly.
*/
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]
>
: { [K in keyof T]: GetUseSuspenseQueryResult<T[K]> }
/**
* The options for `useSuspenseQueries` are the same as for `useQueries`, except that the top-level `subscribed`
* option isn't supported, and each `query` can't have `throwOnError`, `enabled`, or `placeholderData`.
*
* @param options - The `queries` array to run in Suspense, and an optional `combine` function.
* @param queryClient - Use this to provide a custom `QueryClient`. Otherwise, the one from the nearest context
* will be used.
* @returns The same structure as `useQueries`, except that for each `query`, `data` is guaranteed to be
* defined, `isPlaceholderData` is missing, and `status` is either `success` or `error` (with the derived
* flags set accordingly).
*
* Caveat: the component will only re-mount after all queries have finished loading. Hence, if a query has gone
* stale in the time it took for all the queries to complete, it will be fetched again at re-mount. To avoid
* this, make sure to set a high enough `staleTime`. Cancellation does not work.
*
* @example
* The query error is thrown if a fetch fails and no cached data exists yet, so an error boundary is
* required around `<Suspense>`. A failed background refetch instead continues to render the cached data.
* Use {@link QueryErrorResetBoundary} to let the user retry after such an error:
* ```tsx
* import { Suspense } from 'react'
* import { ErrorBoundary } from 'react-error-boundary'
* import {
* QueryErrorResetBoundary,
* useSuspenseQueries,
* } from '@tanstack/react-query'
*
* function Posts({ ids }: { ids: Array<number> }) {
* // Every result is guaranteed to be defined — no per-query `isPending` check needed.
* const postQueries = useSuspenseQueries({
* queries: ids.map((id) => ({
* queryKey: ['post', id],
* queryFn: () => fetchPost(id),
* })),
* })
*
* return (
* <ul>
* {postQueries.map((query) => (
* <li key={query.data.id}>{query.data.title}</li>
* ))}
* </ul>
* )
* }
*
* function App() {
* return (
* <QueryErrorResetBoundary>
* {({ reset }) => (
* <ErrorBoundary
* onReset={reset}
* fallbackRender={({ resetErrorBoundary }) => (
* <div>
* There was an error!
* <button onClick={() => resetErrorBoundary()}>Try again</button>
* </div>
* )}
* >
* <Suspense fallback={<h1>Loading posts...</h1>}>
* <Posts ids={[1, 2, 3]} />
* </Suspense>
* </ErrorBoundary>
* )}
* </QueryErrorResetBoundary>
* )
* }
* ```
*
* @example
* Several different queries — use `useSuspenseQueries` instead of multiple `useSuspenseQuery` calls, so
* they fetch in parallel rather than suspending one after another:
* ```tsx
* import { Suspense } from 'react'
* import { ErrorBoundary } from 'react-error-boundary'
* import {
* QueryErrorResetBoundary,
* useSuspenseQueries,
* } from '@tanstack/react-query'
*
* function Dashboard() {
* const [usersQuery, teamsQuery, projectsQuery] = useSuspenseQueries({
* queries: [
* { queryKey: ['users'], queryFn: fetchUsers },
* { queryKey: ['teams'], queryFn: fetchTeams },
* { queryKey: ['projects'], queryFn: fetchProjects },
* ],
* })
*
* return (
* <div>
* <UserList users={usersQuery.data} />
* <TeamList teams={teamsQuery.data} />
* <ProjectList projects={projectsQuery.data} />
* </div>
* )
* }
*
* function App() {
* return (
* <QueryErrorResetBoundary>
* {({ reset }) => (
* <ErrorBoundary
* onReset={reset}
* fallbackRender={({ resetErrorBoundary }) => (
* <div>
* There was an error!
* <button onClick={() => resetErrorBoundary()}>Try again</button>
* </div>
* )}
* >
* <Suspense fallback={<h1>Loading dashboard...</h1>}>
* <Dashboard />
* </Suspense>
* </ErrorBoundary>
* )}
* </QueryErrorResetBoundary>
* )
* }
* ```
*
* @example
* `combine`s the results into a single boolean, so `Refresh` only re-renders when that boolean changes,
* not on every individual query update. This overload is the only one that accepts `combine`:
* ```tsx
* import { Suspense } from 'react'
* import { ErrorBoundary } from 'react-error-boundary'
* import {
* QueryErrorResetBoundary,
* useSuspenseQueries,
* } from '@tanstack/react-query'
*
* function Refresh() {
* const anyFetching = useSuspenseQueries({
* queries: [
* { queryKey: ['users'], queryFn: fetchUsers },
* { queryKey: ['teams'], queryFn: fetchTeams },
* ],
* combine: (results) => results.some((result) => result.isFetching),
* })
*
* return anyFetching ? <span>Refreshing…</span> : null
* }
*
* function App() {
* return (
* <QueryErrorResetBoundary>
* {({ reset }) => (
* <ErrorBoundary
* onReset={reset}
* fallbackRender={({ resetErrorBoundary }) => (
* <div>
* There was an error!
* <button onClick={() => resetErrorBoundary()}>Try again</button>
* </div>
* )}
* >
* <Suspense fallback={<h1>Loading dashboard...</h1>}>
* <Refresh />
* </Suspense>
* </ErrorBoundary>
* )}
* </QueryErrorResetBoundary>
* )
* }
* ```
*/
export function useSuspenseQueries<
T extends Array<any>,
TCombinedResult = SuspenseQueriesResults<T>,
>(
options: {
/**
* An array with query option objects identical to `useSuspenseQuery`.
*/
queries:
| readonly [...SuspenseQueriesOptions<T>]
| readonly [...{ [K in keyof T]: GetUseSuspenseQueryOptions<T[K]> }]
/**
* Use this to combine the results of the queries into a single value. The result will be structurally
* shared to be as referentially stable as possible.
*/
combine?: (result: SuspenseQueriesResults<T>) => TCombinedResult
},
queryClient?: QueryClient,
): TCombinedResult
/**
* The options for `useSuspenseQueries` are the same as for `useQueries`, except that the top-level `subscribed`
* option isn't supported, and each `query` can't have `throwOnError`, `enabled`, or `placeholderData`.
*
* @param options - The `queries` array to run in Suspense, and an optional `combine` function.
* @param queryClient - Use this to provide a custom `QueryClient`. Otherwise, the one from the nearest context
* will be used.
* @returns The same structure as `useQueries`, except that for each `query`, `data` is guaranteed to be
* defined, `isPlaceholderData` is missing, and `status` is either `success` or `error` (with the derived
* flags set accordingly).
*
* Caveat: the component will only re-mount after all queries have finished loading. Hence, if a query has gone
* stale in the time it took for all the queries to complete, it will be fetched again at re-mount. To avoid
* this, make sure to set a high enough `staleTime`. Cancellation does not work.
*
* @example
* The query error is thrown if a fetch fails and no cached data exists yet, so an error boundary is
* required around `<Suspense>`. A failed background refetch instead continues to render the cached data.
* Use {@link QueryErrorResetBoundary} to let the user retry after such an error:
* ```tsx
* import { Suspense } from 'react'
* import { ErrorBoundary } from 'react-error-boundary'
* import {
* QueryErrorResetBoundary,
* useSuspenseQueries,
* } from '@tanstack/react-query'
*
* function Posts({ ids }: { ids: Array<number> }) {
* // Every result is guaranteed to be defined — no per-query `isPending` check needed.
* const postQueries = useSuspenseQueries({
* queries: ids.map((id) => ({
* queryKey: ['post', id],
* queryFn: () => fetchPost(id),
* })),
* })
*
* return (
* <ul>
* {postQueries.map((query) => (
* <li key={query.data.id}>{query.data.title}</li>
* ))}
* </ul>
* )
* }
*
* function App() {
* return (
* <QueryErrorResetBoundary>
* {({ reset }) => (
* <ErrorBoundary
* onReset={reset}
* fallbackRender={({ resetErrorBoundary }) => (
* <div>
* There was an error!
* <button onClick={() => resetErrorBoundary()}>Try again</button>
* </div>
* )}
* >
* <Suspense fallback={<h1>Loading posts...</h1>}>
* <Posts ids={[1, 2, 3]} />
* </Suspense>
* </ErrorBoundary>
* )}
* </QueryErrorResetBoundary>
* )
* }
* ```
*
* @example
* Several different queries — use `useSuspenseQueries` instead of multiple `useSuspenseQuery` calls, so
* they fetch in parallel rather than suspending one after another:
* ```tsx
* import { Suspense } from 'react'
* import { ErrorBoundary } from 'react-error-boundary'
* import {
* QueryErrorResetBoundary,
* useSuspenseQueries,
* } from '@tanstack/react-query'
*
* function Dashboard() {
* const [usersQuery, teamsQuery, projectsQuery] = useSuspenseQueries({
* queries: [
* { queryKey: ['users'], queryFn: fetchUsers },
* { queryKey: ['teams'], queryFn: fetchTeams },
* { queryKey: ['projects'], queryFn: fetchProjects },
* ],
* })
*
* return (
* <div>
* <UserList users={usersQuery.data} />
* <TeamList teams={teamsQuery.data} />
* <ProjectList projects={projectsQuery.data} />
* </div>
* )
* }
*
* function App() {
* return (
* <QueryErrorResetBoundary>
* {({ reset }) => (
* <ErrorBoundary
* onReset={reset}
* fallbackRender={({ resetErrorBoundary }) => (
* <div>
* There was an error!
* <button onClick={() => resetErrorBoundary()}>Try again</button>
* </div>
* )}
* >
* <Suspense fallback={<h1>Loading dashboard...</h1>}>
* <Dashboard />
* </Suspense>
* </ErrorBoundary>
* )}
* </QueryErrorResetBoundary>
* )
* }
* ```
*/
export function useSuspenseQueries<
T extends Array<any>,
TCombinedResult = SuspenseQueriesResults<T>,
>(
options: {
/**
* An array with query option objects identical to `useSuspenseQuery`.
*/
queries: readonly [...SuspenseQueriesOptions<T>]
/**
* Use this to combine the results of the queries into a single value. The result will be structurally
* shared to be as referentially stable as possible.
*/
combine?: (result: SuspenseQueriesResults<T>) => TCombinedResult
},
queryClient?: QueryClient,
): TCombinedResult
export function useSuspenseQueries(options: any, queryClient?: QueryClient) {
return useQueries(
{
...options,
queries: options.queries.map((query: any) => {
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,
}
}),
},
queryClient,
)
}