@reduxjs/toolkit/dist/listenerMiddleware/types.d.ts

import type { PayloadAction, BaseActionCreator } from '../createAction';
import type { Dispatch as ReduxDispatch, AnyAction, MiddlewareAPI, Middleware, Action as ReduxAction } from 'redux';
import type { ThunkDispatch } from 'redux-thunk';
import type { TaskAbortError } from './exceptions';
/**
 * @internal
 * At the time of writing `lib.dom.ts` does not provide `abortSignal.reason`.
 */
export declare type AbortSignalWithReason<T> = AbortSignal & {
    reason?: T;
};
/**
 * Types copied from RTK
 */
/** @internal */
export interface TypedActionCreator<Type extends string> {
    (...args: any[]): ReduxAction<Type>;
    type: Type;
    match: MatchFunction<any>;
}
/** @internal */
export declare type AnyListenerPredicate<State> = (action: AnyAction, currentState: State, originalState: State) => boolean;
/** @public */
export declare type ListenerPredicate<Action extends AnyAction, State> = (action: AnyAction, currentState: State, originalState: State) => action is Action;
/** @public */
export interface ConditionFunction<State> {
    (predicate: AnyListenerPredicate<State>, timeout?: number): Promise<boolean>;
    (predicate: AnyListenerPredicate<State>, timeout?: number): Promise<boolean>;
    (predicate: () => boolean, timeout?: number): Promise<boolean>;
}
/** @internal */
export declare type MatchFunction<T> = (v: any) => v is T;
/** @public */
export interface ForkedTaskAPI {
    /**
     * Returns a promise that resolves when `waitFor` resolves or
     * rejects if the task or the parent listener has been cancelled or is completed.
     */
    pause<W>(waitFor: Promise<W>): Promise<W>;
    /**
     * Returns a promise that resolves after `timeoutMs` or
     * rejects if the task or the parent listener has been cancelled or is completed.
     * @param timeoutMs
     */
    delay(timeoutMs: number): Promise<void>;
    /**
     * An abort signal whose `aborted` property is set to `true`
     * if the task execution is either aborted or completed.
     * @see https://developer.mozilla.org/en-US/docs/Web/API/AbortSignal
     */
    signal: AbortSignal;
}
/** @public */
export interface AsyncTaskExecutor<T> {
    (forkApi: ForkedTaskAPI): Promise<T>;
}
/** @public */
export interface SyncTaskExecutor<T> {
    (forkApi: ForkedTaskAPI): T;
}
/** @public */
export declare type ForkedTaskExecutor<T> = AsyncTaskExecutor<T> | SyncTaskExecutor<T>;
/** @public */
export declare type TaskResolved<T> = {
    readonly status: 'ok';
    readonly value: T;
};
/** @public */
export declare type TaskRejected = {
    readonly status: 'rejected';
    readonly error: unknown;
};
/** @public */
export declare type TaskCancelled = {
    readonly status: 'cancelled';
    readonly error: TaskAbortError;
};
/** @public */
export declare type TaskResult<Value> = TaskResolved<Value> | TaskRejected | TaskCancelled;
/** @public */
export interface ForkedTask<T> {
    /**
     * A promise that resolves when the task is either completed or cancelled or rejects
     * if parent listener execution is cancelled or completed.
     *
     * ### Example
     * ```ts
     * const result = await fork(async (forkApi) => Promise.resolve(4)).result
     *
     * if(result.status === 'ok') {
     *   console.log(result.value) // logs 4
     * }}
     * ```
     */
    result: Promise<TaskResult<T>>;
    /**
     * Cancel task if it is in progress or not yet started,
     * it is noop otherwise.
     */
    cancel(): void;
}
/** @public */
export interface ListenerEffectAPI<State, Dispatch extends ReduxDispatch<AnyAction>, ExtraArgument = unknown> extends MiddlewareAPI<Dispatch, State> {
    /**
     * Returns the store state as it existed when the action was originally dispatched, _before_ the reducers ran.
     *
     * ### Synchronous invocation
     *
     * This function can **only** be invoked **synchronously**, it throws error otherwise.
     *
     * @example
     *
     * ```ts
     * middleware.startListening({
     *  predicate: () => true,
     *  async effect(_, { getOriginalState }) {
     *    getOriginalState(); // sync: OK!
     *
     *    setTimeout(getOriginalState, 0); // async: throws Error
     *
     *    await Promise().resolve();
     *
     *    getOriginalState() // async: throws Error
     *  }
     * })
     * ```
     */
    getOriginalState: () => State;
    /**
     * Removes the listener entry from the middleware and prevent future instances of the listener from running.
     *
     * It does **not** cancel any active instances.
     */
    unsubscribe(): void;
    /**
     * It will subscribe a listener if it was previously removed, noop otherwise.
     */
    subscribe(): void;
    /**
     * Returns a promise that resolves when the input predicate returns `true` or
     * rejects if the listener has been cancelled or is completed.
     *
     * The return value is `true` if the predicate succeeds or `false` if a timeout is provided and expires first.
     *
     * ### Example
     *
     * ```ts
     * const updateBy = createAction<number>('counter/updateBy');
     *
     * middleware.startListening({
     *  actionCreator: updateBy,
     *  async effect(_, { condition }) {
     *    // wait at most 3s for `updateBy` actions.
     *    if(await condition(updateBy.match, 3_000)) {
     *      // `updateBy` has been dispatched twice in less than 3s.
     *    }
     *  }
     * })
     * ```
     */
    condition: ConditionFunction<State>;
    /**
     * Returns a promise that resolves when the input predicate returns `true` or
     * rejects if the listener has been cancelled or is completed.
     *
     * The return value is the `[action, currentState, previousState]` combination that the predicate saw as arguments.
     *
     * The promise resolves to null if a timeout is provided and expires first,
     *
     * ### Example
     *
     * ```ts
     * const updateBy = createAction<number>('counter/updateBy');
     *
     * middleware.startListening({
     *  actionCreator: updateBy,
     *  async effect(_, { take }) {
     *    const [{ payload }] =  await take(updateBy.match);
     *    console.log(payload); // logs 5;
     *  }
     * })
     *
     * store.dispatch(updateBy(5));
     * ```
     */
    take: TakePattern<State>;
    /**
     * Cancels all other running instances of this same listener except for the one that made this call.
     */
    cancelActiveListeners: () => void;
    /**
     * An abort signal whose `aborted` property is set to `true`
     * if the listener execution is either aborted or completed.
     * @see https://developer.mozilla.org/en-US/docs/Web/API/AbortSignal
     */
    signal: AbortSignal;
    /**
     * Returns a promise that resolves after `timeoutMs` or
     * rejects if the listener has been cancelled or is completed.
     */
    delay(timeoutMs: number): Promise<void>;
    /**
     * Queues in the next microtask the execution of a task.
     * @param executor
     */
    fork<T>(executor: ForkedTaskExecutor<T>): ForkedTask<T>;
    /**
     * Returns a promise that resolves when `waitFor` resolves or
     * rejects if the listener has been cancelled or is completed.
     * @param promise
     */
    pause<M>(promise: Promise<M>): Promise<M>;
    extra: ExtraArgument;
}
/** @public */
export declare type ListenerEffect<Action extends AnyAction, State, Dispatch extends ReduxDispatch<AnyAction>, ExtraArgument = unknown> = (action: Action, api: ListenerEffectAPI<State, Dispatch, ExtraArgument>) => void | Promise<void>;
/**
 * @public
 * Additional infos regarding the error raised.
 */
export interface ListenerErrorInfo {
    /**
     * Which function has generated the exception.
     */
    raisedBy: 'effect' | 'predicate';
}
/**
 * @public
 * Gets notified with synchronous and asynchronous errors raised by `listeners` or `predicates`.
 * @param error The thrown error.
 * @param errorInfo Additional information regarding the thrown error.
 */
export interface ListenerErrorHandler {
    (error: unknown, errorInfo: ListenerErrorInfo): void;
}
/** @public */
export interface CreateListenerMiddlewareOptions<ExtraArgument = unknown> {
    extra?: ExtraArgument;
    /**
     * Receives synchronous errors that are raised by `listener` and `listenerOption.predicate`.
     */
    onError?: ListenerErrorHandler;
}
/** @public */
export declare type ListenerMiddleware<State = unknown, Dispatch extends ThunkDispatch<State, unknown, AnyAction> = ThunkDispatch<State, unknown, AnyAction>, ExtraArgument = unknown> = Middleware<{
    (action: ReduxAction<'listenerMiddleware/add'>): UnsubscribeListener;
}, State, Dispatch>;
/** @public */
export interface ListenerMiddlewareInstance<State = unknown, Dispatch extends ThunkDispatch<State, unknown, AnyAction> = ThunkDispatch<State, unknown, AnyAction>, ExtraArgument = unknown> {
    middleware: ListenerMiddleware<State, Dispatch, ExtraArgument>;
    startListening: AddListenerOverloads<UnsubscribeListener, State, Dispatch, ExtraArgument>;
    stopListening: RemoveListenerOverloads<State, Dispatch>;
    /**
     * Unsubscribes all listeners, cancels running listeners and tasks.
     */
    clearListeners: () => void;
}
/**
 * API Function Overloads
 */
/** @public */
export declare type TakePatternOutputWithoutTimeout<State, Predicate extends AnyListenerPredicate<State>> = Predicate extends MatchFunction<infer Action> ? Promise<[Action, State, State]> : Promise<[AnyAction, State, State]>;
/** @public */
export declare type TakePatternOutputWithTimeout<State, Predicate extends AnyListenerPredicate<State>> = Predicate extends MatchFunction<infer Action> ? Promise<[Action, State, State] | null> : Promise<[AnyAction, State, State] | null>;
/** @public */
export interface TakePattern<State> {
    <Predicate extends AnyListenerPredicate<State>>(predicate: Predicate): TakePatternOutputWithoutTimeout<State, Predicate>;
    <Predicate extends AnyListenerPredicate<State>>(predicate: Predicate, timeout: number): TakePatternOutputWithTimeout<State, Predicate>;
    <Predicate extends AnyListenerPredicate<State>>(predicate: Predicate, timeout?: number | undefined): TakePatternOutputWithTimeout<State, Predicate>;
}
/** @public */
export interface UnsubscribeListenerOptions {
    cancelActive?: true;
}
/** @public */
export declare type UnsubscribeListener = (unsubscribeOptions?: UnsubscribeListenerOptions) => void;
/**
 * @public
 * The possible overloads and options for defining a listener. The return type of each function is specified as a generic arg, so the overloads can be reused for multiple different functions
 */
export interface AddListenerOverloads<Return, State = unknown, Dispatch extends ReduxDispatch = ThunkDispatch<State, unknown, AnyAction>, ExtraArgument = unknown, AdditionalOptions = unknown> {
    /** Accepts a "listener predicate" that is also a TS type predicate for the action*/
    <MA extends AnyAction, LP extends ListenerPredicate<MA, State>>(options: {
        actionCreator?: never;
        type?: never;
        matcher?: never;
        predicate: LP;
        effect: ListenerEffect<ListenerPredicateGuardedActionType<LP>, State, Dispatch, ExtraArgument>;
    } & AdditionalOptions): Return;
    /** Accepts an RTK action creator, like `incrementByAmount` */
    <C extends TypedActionCreator<any>>(options: {
        actionCreator: C;
        type?: never;
        matcher?: never;
        predicate?: never;
        effect: ListenerEffect<ReturnType<C>, State, Dispatch, ExtraArgument>;
    } & AdditionalOptions): Return;
    /** Accepts a specific action type string */
    <T extends string>(options: {
        actionCreator?: never;
        type: T;
        matcher?: never;
        predicate?: never;
        effect: ListenerEffect<ReduxAction<T>, State, Dispatch, ExtraArgument>;
    } & AdditionalOptions): Return;
    /** Accepts an RTK matcher function, such as `incrementByAmount.match` */
    <MA extends AnyAction, M extends MatchFunction<MA>>(options: {
        actionCreator?: never;
        type?: never;
        matcher: M;
        predicate?: never;
        effect: ListenerEffect<GuardedType<M>, State, Dispatch, ExtraArgument>;
    } & AdditionalOptions): Return;
    /** Accepts a "listener predicate" that just returns a boolean, no type assertion */
    <LP extends AnyListenerPredicate<State>>(options: {
        actionCreator?: never;
        type?: never;
        matcher?: never;
        predicate: LP;
        effect: ListenerEffect<AnyAction, State, Dispatch, ExtraArgument>;
    } & AdditionalOptions): Return;
}
/** @public */
export declare type RemoveListenerOverloads<State = unknown, Dispatch extends ReduxDispatch = ThunkDispatch<State, unknown, AnyAction>> = AddListenerOverloads<boolean, State, Dispatch, any, UnsubscribeListenerOptions>;
/** @public */
export interface RemoveListenerAction<Action extends AnyAction, State, Dispatch extends ReduxDispatch<AnyAction>> {
    type: 'listenerMiddleware/remove';
    payload: {
        type: string;
        listener: ListenerEffect<Action, State, Dispatch>;
    };
}
/**
 * @public
 * A "pre-typed" version of `addListenerAction`, so the listener args are well-typed */
export declare type TypedAddListener<State, Dispatch extends ReduxDispatch<AnyAction> = ThunkDispatch<State, unknown, AnyAction>, ExtraArgument = unknown, Payload = ListenerEntry<State, Dispatch>, T extends string = 'listenerMiddleware/add'> = BaseActionCreator<Payload, T> & AddListenerOverloads<PayloadAction<Payload, T>, State, Dispatch, ExtraArgument>;
/**
 * @public
 * A "pre-typed" version of `removeListenerAction`, so the listener args are well-typed */
export declare type TypedRemoveListener<State, Dispatch extends ReduxDispatch<AnyAction> = ThunkDispatch<State, unknown, AnyAction>, Payload = ListenerEntry<State, Dispatch>, T extends string = 'listenerMiddleware/remove'> = BaseActionCreator<Payload, T> & AddListenerOverloads<PayloadAction<Payload, T>, State, Dispatch, any, UnsubscribeListenerOptions>;
/**
 * @public
 * A "pre-typed" version of `middleware.startListening`, so the listener args are well-typed */
export declare type TypedStartListening<State, Dispatch extends ReduxDispatch<AnyAction> = ThunkDispatch<State, unknown, AnyAction>, ExtraArgument = unknown> = AddListenerOverloads<UnsubscribeListener, State, Dispatch, ExtraArgument>;
/** @public
 * A "pre-typed" version of `middleware.stopListening`, so the listener args are well-typed */
export declare type TypedStopListening<State, Dispatch extends ReduxDispatch<AnyAction> = ThunkDispatch<State, unknown, AnyAction>> = RemoveListenerOverloads<State, Dispatch>;
/** @public
 * A "pre-typed" version of `createListenerEntry`, so the listener args are well-typed */
export declare type TypedCreateListenerEntry<State, Dispatch extends ReduxDispatch<AnyAction> = ThunkDispatch<State, unknown, AnyAction>> = AddListenerOverloads<ListenerEntry<State, Dispatch>, State, Dispatch>;
/**
 * Internal Types
 */
/** @internal An single listener entry */
export declare type ListenerEntry<State = unknown, Dispatch extends ReduxDispatch<AnyAction> = ReduxDispatch<AnyAction>> = {
    id: string;
    effect: ListenerEffect<any, State, Dispatch>;
    unsubscribe: () => void;
    pending: Set<AbortController>;
    type?: string;
    predicate: ListenerPredicate<AnyAction, State>;
};
/**
 * @internal
 * A shorthand form of the accepted args, solely so that `createListenerEntry` has validly-typed conditional logic when checking the options contents
 */
export declare type FallbackAddListenerOptions = {
    actionCreator?: TypedActionCreator<string>;
    type?: string;
    matcher?: MatchFunction<any>;
    predicate?: ListenerPredicate<any, any>;
} & {
    effect: ListenerEffect<any, any, any>;
};
/**
 * Utility Types
 */
/** @public */
export declare type GuardedType<T> = T extends (x: any, ...args: unknown[]) => x is infer T ? T : never;
/** @public */
export declare type ListenerPredicateGuardedActionType<T> = T extends ListenerPredicate<infer Action, any> ? Action : never;