import { EventEmitter } from 'events';
export * from './interfaces';
export interface StatsGathererOpts {
    session?: string;
    initiator?: string;
    conference?: string;
    interval?: number;
    logger?: {
        error(...any: any[]): any;
        warn(...any: any[]): any;
    };
}
export default class StatsGatherer extends EventEmitter {
    peerConnection: RTCPeerConnection;
    private session;
    private initiator;
    private conference;
    private statsInterval;
    private pollingInterval;
    private lastResult;
    private lastActiveLocalCandidate;
    private lastActiveRemoteCandidate;
    private haveConnectionMetrics;
    private iceStartTime;
    private iceFailedTime;
    private iceConnectionTime;
    private logger;
    private statsArr;
    private boundHandleIceStateChange;
    private boundHandleConnectionStateChange;
    constructor(peerConnection: RTCPeerConnection, opts?: StatsGathererOpts);
    /**
     * Stops the stats polling interval and removes event listeners from the peer connection.
     * Call this when you are done with the gatherer to prevent leaked timers.
     */
    stop(): void;
    private handleIceStateChange;
    private waitForSelectedCandidatePair;
    private getSelectedCandidatePair;
    private gatherSelectedCandidateInfo;
    private handleConnectionStateChange;
    private pollForStats;
    private checkBitrate;
    private polyFillStats;
    private isNativeStatsReport;
    private gatherStats;
    private createStatsReport;
    private processSource;
    private processSelectedCandidatePair;
    private checkLastActiveCandidate;
}