import type { AbortableAsyncMapper, AbortableAsyncPredicate, AbortableMapper, AbortablePredicate, Promisable } from '../types.js';
import { END } from '../types.js';
/**
 * Similar to Iterable2, but for AsyncIterable.
 *
 * AsyncIterable2 is a wrapper around AsyncIterable that implements "Iterator Helpers proposal":
 * https://github.com/tc39/proposal-iterator-helpers
 *
 * AsyncIterable2 can be removed after the proposal is widely implemented in Node & browsers.
 *
 * @experimental
 */
export declare class AsyncIterable2<T> implements AsyncIterable<T> {
    private it;
    private constructor();
    static of<T>(it: AsyncIterable<T>): AsyncIterable2<T>;
    static ofIterable<T>(it: Iterable<T>): AsyncIterable2<T>;
    static empty<T>(): AsyncIterable2<T>;
    [Symbol.asyncIterator](): AsyncIterator<T>;
    toArray(): Promise<T[]>;
    forEach(cb: (v: T, i: number) => Promisable<any | typeof END>): Promise<void>;
    some(cb: AbortableAsyncPredicate<T>): Promise<boolean>;
    someSync(cb: AbortablePredicate<T>): Promise<boolean>;
    every(cb: AbortableAsyncPredicate<T>): Promise<boolean>;
    everySync(cb: AbortablePredicate<T>): Promise<boolean>;
    find(cb: AbortableAsyncPredicate<T>): Promise<T | undefined>;
    findSync(cb: AbortablePredicate<T>): Promise<T | undefined>;
    filter(cb: AbortableAsyncPredicate<T>): AsyncIterable2<T>;
    filterSync(cb: AbortablePredicate<T>): AsyncIterable2<T>;
    map<OUT>(mapper: AbortableAsyncMapper<T, OUT>): AsyncIterable2<OUT>;
    mapSync<OUT>(mapper: AbortableMapper<T, OUT>): AsyncIterable2<OUT>;
}