import "./_dnt.polyfills.js";
import type { PromiseMaybe } from "./promise.js";
/**
 * GeneratorFunction
 */
export declare const GF: GeneratorFunction;
/**
 * AsyncGeneratorFunction
 */
export declare const AGF: AsyncGeneratorFunction;
type AGValue<T> = T extends AsyncIterableIterator<infer V, unknown, unknown> ? V : unknown;
type AGReturn<T> = T extends AsyncIterableIterator<unknown, infer R, unknown> ? R : unknown;
type AGNext<T> = T extends AsyncIterableIterator<unknown, unknown, infer N> ? N : unknown;
/**
 * 持续迭代一个异步迭代器直到结束
 * @example
 * ```ts
 * // const r: number
 * const r = await ag_done((async function* () {
 *     return 1;
 * })());
 * ```
 */
export declare const ag_done: <T extends AsyncIterableIterator<any>>(ag: T, each?: AsyncGeneratorDoneOptions<T>) => Promise<AGReturn<T>>;
export interface AsyncGeneratorDoneOptions<T extends AsyncIterableIterator<any>> {
    next?: (value: AGValue<T>) => PromiseMaybe<AGNext<T>>;
}
export declare const ag_map: <T extends AsyncIterableIterator<any>, R>(ag: T, each: AsyncGeneratorMapOptions<T, R>) => Promise<R[]>;
export interface AsyncGeneratorMapOptions<T extends AsyncIterableIterator<any>, R> extends AsyncGeneratorDoneOptions<T> {
    map: (value: AGValue<T>) => PromiseMaybe<R>;
}
export declare const ag_map_reduce: <T extends AsyncIterableIterator<any>, M, R>(ag: T, each: AsyncGeneratorMapReduceOptions<T, M, R>) => Promise<R>;
export interface AsyncGeneratorMapReduceOptions<T extends AsyncIterableIterator<any>, M, R> extends AsyncGeneratorDoneOptions<T> {
    map: (value: AGValue<T>) => PromiseMaybe<Iterable<M>>;
    reduce: (previousValue: R, currentValue: M) => PromiseMaybe<R>;
    initialValue: R;
}
/**
 * 持续迭代一个异步迭代器直到结束，接受 promise.then 的参数
 *
 * @example
 * ```ts
 * // const r: 1 | boolean
 * const r = await ag_then(
 *     (async function* () {
 *     })(),
 *     () => 1 as const,
 *     () => false,
 * );
 * ```
 */
export declare const ag_then: <T extends AsyncIterableIterator<any>, ARGS extends Parameters<Promise<AGReturn<T>>["then"]> = [onfulfilled?: ((value: any) => unknown | PromiseLike<unknown>) | null | undefined, onrejected?: ((reason: any) => unknown | PromiseLike<unknown>) | null | undefined]>(ag: T, ...args: ARGS) => Promise<ReturnType<FilterNotNull<ARGS>[number]>>;
type FilterNotNull<A> = A extends (infer T)[] ? NonNullable<T>[] : [];
export {};
//# sourceMappingURL=generator.d.ts.map