import { AsyncIterableLike } from "../async-like";
export type ReduceFn<T, This, Parent, Accumulator> = (this: This, value: T, parent: Parent) => Accumulator;
export type ReduceAsyncFn<T, This, Parent, Accumulator> = (this: This, value: T, parent: Parent) => Promise<Accumulator> | Accumulator;
export declare function reduce<T, This, Parent, Accumulator = T>(iterable: Iterable<T>, callbackFn: ReduceFn<T, This, Parent, Accumulator>, initialValue?: Accumulator, thisValue?: This, parent?: Parent): Accumulator;
export declare function asyncReduce<T, This, Parent, Accumulator = T>(iterable: AsyncIterableLike<T>, callbackFn: ReduceAsyncFn<T, This, Parent, Accumulator>, initialValue?: Accumulator, thisValue?: This, parent?: Parent): Promise<Accumulator>;