import type { IDisposable } from '@lumino/disposable';
import type { IOutputCallback } from './callback';
export declare class DownloadTracker implements IDisposable {
    readonly packageName: string;
    readonly moduleName: string;
    readonly outputCallback: IOutputCallback;
    constructor(packageName: string, moduleName: string, outputCallback: IOutputCallback);
    dispose(): void;
    get isDisposed(): boolean;
    start(): void;
    stop(): void;
    private _callback;
    private _callbackCount;
    private _delayMs;
    private _dots;
    private _initialIgnore;
    private _intervalId?;
    private _isDisposed;
    private _displayed;
}