28 lines
1.6 KiB
TypeScript
28 lines
1.6 KiB
TypeScript
declare type PromiseState = 'pending' | 'fulfilled' | 'rejected';
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declare type Executor<Value> = ConstructorParameters<typeof Promise<Value>>[0];
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declare type ResolveFunction<Value> = Parameters<Executor<Value>>[0];
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declare type RejectFunction<Reason> = Parameters<Executor<Reason>>[1];
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declare type DeferredPromiseExecutor<Input = never, Output = Input> = {
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(resolve?: ResolveFunction<Input>, reject?: RejectFunction<any>): void;
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resolve: ResolveFunction<Input>;
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reject: RejectFunction<any>;
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result?: Output;
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state: PromiseState;
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rejectionReason?: unknown;
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};
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declare function createDeferredExecutor<Input = never, Output = Input>(): DeferredPromiseExecutor<Input, Output>;
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declare class DeferredPromise<Input, Output = Input> extends Promise<Input> {
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#private;
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resolve: ResolveFunction<Output>;
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reject: RejectFunction<Output>;
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constructor(executor?: Executor<Input> | null);
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get state(): PromiseState;
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get rejectionReason(): unknown;
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then<ThenResult = Input, CatchResult = never>(onFulfilled?: (value: Input) => ThenResult | PromiseLike<ThenResult>, onRejected?: (reason: any) => CatchResult | PromiseLike<CatchResult>): DeferredPromise<ThenResult | CatchResult, Output>;
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catch<CatchResult = never>(onRejected?: (reason: any) => CatchResult | PromiseLike<CatchResult>): DeferredPromise<Input | CatchResult, Output>;
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finally(onfinally?: () => void | Promise<any>): DeferredPromise<Input, Output>;
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}
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export { DeferredPromise, DeferredPromiseExecutor, Executor, PromiseState, RejectFunction, ResolveFunction, createDeferredExecutor };
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