import { ReactiveController, ReactiveControllerHost } from 'lit';
export interface RecordingHost extends ReactiveControllerHost {
    disabled: boolean;
    dispatchEvent(event: Event): boolean;
}
export declare class RecordingController implements ReactiveController {
    private _host;
    private _voiceRecorder;
    isRecording: boolean;
    duration: number;
    audioLevel: number;
    shouldFocusFinishButton: boolean;
    constructor(host: RecordingHost);
    hostConnected(): void;
    hostDisconnected(): void;
    start(fromKeyboard: boolean): Promise<void>;
    stop(): void;
    cancel(): void;
    formatDuration(): string;
    static isSupported(): boolean;
    private _init;
    private _destroy;
}