import { AsyncIterableLike } from "../async-like";
export interface Hooks<T, I extends Iterable<T>, O extends Iterator<T>> {
    preIterator?(iterable: I): void;
    iterator?(iterable: I): O;
    postIterator?(iterator: O, iterable: I): void;
    preNext?(iterator: O, iterable: I): void;
    next?(iterator: O, iterable: I): IteratorResult<T>;
    postNext?(result: IteratorResult<T>, iterator: O, iterable: I): void;
    preYield?(value: T, iterator: O, iterable: I): void;
    yield?(value: T, iterator: O, iterable: I): T;
    postYield?(value: T, returned: any, iterator: O, iterable: I): void;
    done?(finalValue: T, finalReturned: any, iterator: O, iterable: I): void;
}
export interface AsyncHooks<T, I extends AsyncIterableLike<T>, O extends AsyncIterator<T>> {
    preIterator?(iterable: I): void | Promise<void>;
    iterator?(iterable: I): O;
    postIterator?(iterator: O, iterable: I): void | Promise<void>;
    preNext?(iterator: O, iterable: I): void | Promise<void>;
    next?(iterator: O, iterable: I): Promise<IteratorResult<T>>;
    postNext?(result: IteratorResult<T>, iterator: O, iterable: I): void | Promise<void>;
    preYield?(value: T, iterator: O, iterable: I): void | Promise<void>;
    yield?(value: T, iterator: O, iterable: I): T | Promise<T>;
    postYield?(value: T, returned: any, iterator: O, iterable: I): void | Promise<void>;
    done?(finalValue: T, finalReturned: any, iterator: O, iterable: I): void | Promise<void>;
}
export type Hook<T, I extends Iterable<T>> = (iterable: I) => IterableIterator<T>;
export type AsyncHook<T, I extends AsyncIterableLike<T>> = (iterable: I) => AsyncIterableIterator<T>;
export declare function hooks<T, I extends Iterable<T>, O extends Iterator<T>>(options: Hooks<T, I, O>): Hook<T, I>;
export declare function asyncHooks<T, I extends AsyncIterableLike<T>, O extends AsyncIterator<T>>(options: AsyncHooks<T, I, O>): AsyncHook<T, I>;