/**
 * @license
 * Copyright 2024 Nuraly, Laabidi Aymen
 * SPDX-License-Identifier: MIT
 */
import type { ReactiveController, ReactiveControllerHost } from 'lit';
export interface AudioRecordingState {
    active: boolean;
    duration: string;
    bars: number[];
}
export interface AudioRecordResult {
    blob: Blob;
    mimeType: string;
    duration: string;
}
export declare class ChatbotAudioController implements ReactiveController {
    host: ReactiveControllerHost;
    state: AudioRecordingState;
    private _mediaRecorder;
    private _audioChunks;
    private _waveformSamples;
    private _analyser;
    private _timer;
    private _animFrame;
    private _startTime;
    private _stopResolve;
    constructor(host: ReactiveControllerHost);
    hostConnected(): void;
    hostDisconnected(): void;
    start(): Promise<void>;
    cancel(): void;
    stop(): Promise<AudioRecordResult | null>;
}
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