import type { MemoCollectionIterator, TypeOfCollection } from '../types';
import type { Collection } from '@sdkset/types';
/**
 * 用于创建`reduce`、`reduceRight`的内部函数。
 *
 * @example
 * _createReduce(1)
 * => reduce
 *
 * _createReduce(-1)
 * => reduceRight
 *
 * @param dir 1：从左至右 -1：从右至左
 */
export declare function _createReduce(dir: 1 | -1): <V extends Collection, TResult = TypeOfCollection<V>>(list: V, iteratee: MemoCollectionIterator<TypeOfCollection<V>, TResult, Collection<TypeOfCollection<V>>>, memo?: TResult | undefined) => TResult;