export default Task;
declare class Task {
    static clear(): void;
    constructor(url: any, _callback: any, range: any);
    url: any;
    on: boolean;
    range: any;
    id: any;
    xhr: XMLHttpRequest;
    cancel(): void;
    remove(): void;
    update(): void;
    run(): void;
}
declare namespace Task {
    const queue: any[];
    const limit: number;
}