import { Connection } from "../../domain/connection";
import { MediaElement } from "../../domain/mediaElement";
import { Track } from "../../domain/track";
import { GlobalHook } from "../base";
declare class Listener {
    target: EventTarget;
    eventType: string;
    handler: (...args: unknown[]) => void;
    constructor(target: EventTarget, eventType: string, handler: (...args: unknown[]) => void);
    handle(...args: unknown[]): void;
}
export declare abstract class Callback extends GlobalHook {
    listeners: Listener[];
    addListener(target: EventTarget, eventType: string, handler: (...args: unknown[]) => void): void;
    stopListening(): void;
    detach(): void;
}
export declare abstract class TrackUpdatedCallback extends Callback {
    static serialize(track: Track): {
        enabled: boolean;
        transmitsData: boolean;
        playsLocally: boolean;
        deviceId: string | undefined;
    };
    emitTrackUpdatedIfNeeded(track: Track, elements?: MediaElement[]): void;
}
export declare abstract class ConnectionUpdatedCallback extends TrackUpdatedCallback {
    emitEventsIfNeeded(connection: Connection): void;
}
export {};