import { Observable, UnaryFunction } from 'rxjs';
import { ApplicationRef } from '@angular/core';
import { SpeechGrammarListType, SpeechRecognitionServiceEvent } from '../adapter';
import { SpeechRecognitionCommon } from './speech-recognition.common';
export declare const resultList: UnaryFunction<Observable<SpeechRecognitionEvent>, Observable<SpeechRecognitionResultList>>;
export declare class RxSpeechRecognitionService extends SpeechRecognitionCommon {
    private ref;
    private proxy$;
    private _started$;
    readonly $: Observable<SpeechRecognitionServiceEvent>;
    readonly started$: Observable<boolean>;
    constructor(ref: ApplicationRef, grammars: SpeechGrammarListType, lang: string, continuous: boolean, interimResults: boolean, maxAlternatives: number, serviceURI: string);
    private initInternal;
    listen(): Observable<SpeechRecognitionServiceEvent>;
}