86 lines
5.2 KiB
TypeScript
86 lines
5.2 KiB
TypeScript
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export interface Thenable <R> {
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then <U> (onFulfilled?: (value: R) => U | Thenable<U>, onRejected?: (error: any) => U | Thenable<U>): Thenable<U>;
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then <U> (onFulfilled?: (value: R) => U | Thenable<U>, onRejected?: (error: any) => void): Thenable<U>;
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}
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export class Promise <R> implements Thenable <R> {
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/**
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* If you call resolve in the body of the callback passed to the constructor,
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* your promise is fulfilled with result object passed to resolve.
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* If you call reject your promise is rejected with the object passed to resolve.
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* For consistency and debugging (eg stack traces), obj should be an instanceof Error.
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* Any errors thrown in the constructor callback will be implicitly passed to reject().
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*/
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constructor (callback: (resolve : (value?: R | Thenable<R>) => void, reject: (error?: any) => void) => void);
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/**
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* onFulfilled is called when/if "promise" resolves. onRejected is called when/if "promise" rejects.
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* Both are optional, if either/both are omitted the next onFulfilled/onRejected in the chain is called.
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* Both callbacks have a single parameter , the fulfillment value or rejection reason.
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* "then" returns a new promise equivalent to the value you return from onFulfilled/onRejected after being passed through Promise.resolve.
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* If an error is thrown in the callback, the returned promise rejects with that error.
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*
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* @param onFulfilled called when/if "promise" resolves
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* @param onRejected called when/if "promise" rejects
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*/
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then <U> (onFulfilled?: (value: R) => U | Thenable<U>, onRejected?: (error: any) => U | Thenable<U>): Promise<U>;
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then <U> (onFulfilled?: (value: R) => U | Thenable<U>, onRejected?: (error: any) => void): Promise<U>;
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/**
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* Sugar for promise.then(undefined, onRejected)
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*
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* @param onRejected called when/if "promise" rejects
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*/
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catch <U> (onRejected?: (error: any) => U | Thenable<U>): Promise<U>;
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/**
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* onSettled is invoked when/if the "promise" settles (either rejects or fulfills).
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* The returned promise is settled when the `Thenable` returned by `onFinally` settles;
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* it is rejected if `onFinally` throws or rejects; otherwise it assumes the state of the
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* original Promise.
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*
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* @param onFinally called when/if "promise" settles
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*/
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finally (onFinally?: () => any | Thenable<any>): Promise<R>;
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/**
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* Make a new promise from the thenable.
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* A thenable is promise-like in as far as it has a "then" method.
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*/
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static resolve (): Promise<void>;
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static resolve <R> (value: R | Thenable<R>): Promise<R>;
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/**
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* Make a promise that rejects to obj. For consistency and debugging (eg stack traces), obj should be an instanceof Error
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*/
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static reject <R> (error: any): Promise<R>;
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/**
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* Make a promise that fulfills when every item in the array fulfills, and rejects if (and when) any item rejects.
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* the array passed to all can be a mixture of promise-like objects and other objects.
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* The fulfillment value is an array (in order) of fulfillment values. The rejection value is the first rejection value.
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*/
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static all<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>(values: [T1 | Thenable<T1>, T2 | Thenable<T2>, T3 | Thenable<T3>, T4 | Thenable <T4>, T5 | Thenable<T5>, T6 | Thenable<T6>, T7 | Thenable<T7>, T8 | Thenable<T8>, T9 | Thenable<T9>, T10 | Thenable<T10>]): Promise<[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10]>;
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static all<T1, T2, T3, T4, T5, T6, T7, T8, T9>(values: [T1 | Thenable<T1>, T2 | Thenable<T2>, T3 | Thenable<T3>, T4 | Thenable <T4>, T5 | Thenable<T5>, T6 | Thenable<T6>, T7 | Thenable<T7>, T8 | Thenable<T8>, T9 | Thenable<T9>]): Promise<[T1, T2, T3, T4, T5, T6, T7, T8, T9]>;
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static all<T1, T2, T3, T4, T5, T6, T7, T8>(values: [T1 | Thenable<T1>, T2 | Thenable<T2>, T3 | Thenable<T3>, T4 | Thenable <T4>, T5 | Thenable<T5>, T6 | Thenable<T6>, T7 | Thenable<T7>, T8 | Thenable<T8>]): Promise<[T1, T2, T3, T4, T5, T6, T7, T8]>;
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static all<T1, T2, T3, T4, T5, T6, T7>(values: [T1 | Thenable<T1>, T2 | Thenable<T2>, T3 | Thenable<T3>, T4 | Thenable <T4>, T5 | Thenable<T5>, T6 | Thenable<T6>, T7 | Thenable<T7>]): Promise<[T1, T2, T3, T4, T5, T6, T7]>;
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static all<T1, T2, T3, T4, T5, T6>(values: [T1 | Thenable<T1>, T2 | Thenable<T2>, T3 | Thenable<T3>, T4 | Thenable <T4>, T5 | Thenable<T5>, T6 | Thenable<T6>]): Promise<[T1, T2, T3, T4, T5, T6]>;
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static all<T1, T2, T3, T4, T5>(values: [T1 | Thenable<T1>, T2 | Thenable<T2>, T3 | Thenable<T3>, T4 | Thenable <T4>, T5 | Thenable<T5>]): Promise<[T1, T2, T3, T4, T5]>;
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static all<T1, T2, T3, T4>(values: [T1 | Thenable<T1>, T2 | Thenable<T2>, T3 | Thenable<T3>, T4 | Thenable <T4>]): Promise<[T1, T2, T3, T4]>;
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static all<T1, T2, T3>(values: [T1 | Thenable<T1>, T2 | Thenable<T2>, T3 | Thenable<T3>]): Promise<[T1, T2, T3]>;
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static all<T1, T2>(values: [T1 | Thenable<T1>, T2 | Thenable<T2>]): Promise<[T1, T2]>;
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static all<T1>(values: [T1 | Thenable<T1>]): Promise<[T1]>;
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static all<TAll>(values: Array<TAll | Thenable<TAll>>): Promise<TAll[]>;
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/**
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* Make a Promise that fulfills when any item fulfills, and rejects if any item rejects.
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*/
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static race <R> (promises: (R | Thenable<R>)[]): Promise<R>;
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}
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/**
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* The polyfill method will patch the global environment (in this case to the Promise name) when called.
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*/
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export function polyfill (): void;
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