export declare type Iiterator = (value: any, key: string | number, accumulator: any) => Promise<void | Iiterable>;
export declare type Ireduce = (iterable: Array<any> | {
    [key: string]: any | Array<any>;
}, iterator: Iiterator, initializerValue: Promise<any> | any) => Promise<[null | Error, any]>;
export declare type IiterableError = {
    [K in string | number]: Error | null;
};
export declare type Iiterable = {
    [K in string | number]: any;
};
/**
 * Iterates over a given object or array, calling the provided iterator function
 * @param iterable - array or object that will be passed as the argument given in the iterator function
 * @param iterator - a function that gets called in series: should return the target promises
 * @param initilizerValue - a value of any type that will be passed into the given funtion as the the first 'lastResolvedValue', defaults to null
 * @return a Promise which resolves to a tuple of type [ShapeofPassediterableAsErrors, ShapeofPassediterable]
 */
export declare function reduce(iterable: Iiterable, iterator?: Iiterator, initializerValue?: any): Promise<[IiterableError, Iiterable]>;
/**
 * Iterates over a given object or array, calling the provided iterator function
 * @param iterable - array or object that will be passed as the argument given in the iterator function
 * @param iterator - a function that gets called in series: should return the target promises
 * @param initilizerValue - a value of any type that will be passed into the given funtion as the the first 'lastResolvedValue', defaults to null
 * @return a Promise which resolves to a tuple of type [ShapeofPassediterableAsErrors, ShapeofPassediterable]
 */
export declare function series(iterable: Iiterable, iterator?: Iiterator, initializerValue?: any): Promise<[IiterableError, Iiterable]>;