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// @flow
declare class ThenPromise<+R> extends Promise<R> {
constructor(callback: (
resolve: (result: Promise<R> | R) => void,
reject: (error: any) => void
) => mixed): void;
then<U>(
onFulfill?: (value: R) => Promise<U> | U,
onReject?: (error: any) => Promise<U> | U
): ThenPromise<U>;
catch<U>(
onReject?: (error: any) => Promise<U> | U
): ThenPromise<R | U>;
// Extensions specific to then/promise
/**
* Attaches callbacks for the resolution and/or rejection of the ThenPromise, without returning a new promise.
* @param onfulfilled The callback to execute when the ThenPromise is resolved.
* @param onrejected The callback to execute when the ThenPromise is rejected.
*/
done(onfulfilled?: (value: R) => any, onrejected?: (reason: any) => any): void;
/**
* Calls a node.js style callback. If none is provided, the promise is returned.
*/
nodeify(callback: void | null): ThenPromise<R>;
nodeify(callback: (err: Error, value: R) => void): void;
static resolve<T>(object: Promise<T> | T): ThenPromise<T>;
static reject<T>(error?: any): ThenPromise<T>;
static all<Elem, T:Iterable<Elem>>(promises: T): ThenPromise<$TupleMap<T, typeof $await>>;
static race<T, Elem: Promise<T> | T>(promises: Array<Elem>): ThenPromise<T>;
// Extensions specific to then/promise
static denodeify(fn: Function): (...args: any[]) => ThenPromise<any>;
static nodeify(fn: Function): Function;
}
module.exports = ThenPromise;
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