export declare type PromiseFn<T> = (results: T[]) => Promise<T>;
export declare type PromiseFnArr<T> = (results: T[]) => Promise<T[]>;
export declare const series: <T>(functions: PromiseFn<T>[]) => Promise<T[]>;
export declare const seriesArr: <T>(functions: PromiseFnArr<T>[]) => Promise<T[]>;