import { BehaviorSubjectable } from '../abstract/behavior.subjectable';
export declare type ConnectionSpeed = {
    Bps: number;
    Kbps: number;
    Mbps: number;
};
/**
 * ConnectionSpeedSubject
 * ======================
 *
 * ```typescript
 * import { ConnectionSpeedSubject } from '@mralexandernickel/frontend.subjects/dist/connection.speed/connection.speed';
 *
 * const connectionSpeed = new ConnectionSpeedSubject('http://domain.tld/path/to/file.jpg', 123456, 2000);
 * connectionSpeed.get().subscribe(speed => {
 *   if (speed) {
 *     console.log('Connection-SPeed is now:', speed);
 *   }
 * });
 */
export declare class ConnectionSpeedSubject extends BehaviorSubjectable {
    /**
     * @constructor
     * @param file URL to the check-file
     * @param filesize Size of the check-file
     * @param interval The duration of the interval to re-check the connection-speed. If this is 0 we will check only once.
     */
    constructor(fileURL: string, fileSize: number, interval?: number);
    /**
     * Detect Connection Speed of the client
     * @param file URL to the check-file
     * @param filesize Size of the check-file
     */
    private detectConnection;
}