import Hls from 'hls.js';
import { HlsPlayerStats } from '../interfaces';
export declare abstract class BaseAdapter {
    hlsInstance: Hls;
    videoEl: HTMLVideoElement;
    hlsStatsState: HlsPlayerStats;
    constructor(hlsInstance: Hls, videoEl: HTMLVideoElement);
    abstract startGatheringStats(): void;
    abstract finishGatheringStats(): void;
    getState(): HlsPlayerStats;
}