import { MaybeAsync } from './util';
export declare type Task<T> = () => MaybeAsync<T>;
export declare type AsyncTask<T> = () => Promise<T>;
export default class TaskList<T> {
    private serial;
    private _tasks;
    constructor(tasks: Task<T>[], serial?: boolean);
    run(): Promise<T[]>;
    map<B>(fn: (value: T, index?: number) => B): TaskList<B>;
}