import type { InitState, OnProgress } from '../../core/types.js';
import type { BrowserSpeechSTTOptions, STTAdapter, STTCapabilities, STTOptions, STTResult } from './types.js';
/**
 * Browser Speech Recognition adapter
 */
export declare class BrowserSpeechSTTAdapter implements STTAdapter {
    readonly type: "browser-speech";
    private _initState;
    private recognition;
    private options;
    private _isListening;
    private resultListeners;
    private errorListeners;
    private startListeners;
    private endListeners;
    constructor(options?: BrowserSpeechSTTOptions);
    get initState(): InitState;
    ensureInitialized(_onProgress?: OnProgress): Promise<void>;
    private setupRecognitionHandlers;
    getCapabilities(): STTCapabilities;
    start(options?: STTOptions): Promise<void>;
    stop(): Promise<void>;
    abort(): void;
    isListening(): boolean;
    onResult(callback: (result: STTResult) => void): () => void;
    onError(callback: (error: Error) => void): () => void;
    onStart(callback: () => void): () => void;
    onEnd(callback: () => void): () => void;
    dispose(): Promise<void>;
}
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