import { OnInit, EventEmitter, NgZone, ElementRef } from '@angular/core';
import { ControlValueAccessor } from '@angular/forms';
import { ReCaptchaService } from './captcha.service';
export declare class ReCaptchaComponent implements OnInit, ControlValueAccessor {
    private _zone;
    private _captchaService;
    site_key: string;
    theme: string;
    type: string;
    size: string;
    tabindex: number;
    badge: string;
    language: string;
    captchaResponse: EventEmitter<string>;
    captchaExpired: EventEmitter<{}>;
    targetRef: ElementRef;
    widgetId: any;
    onChange: Function;
    onTouched: Function;
    constructor(_zone: NgZone, _captchaService: ReCaptchaService);
    ngOnInit(): void;
    reset(): void;
    execute(): void;
    getResponse(): string;
    writeValue(newValue: any): void;
    registerOnChange(fn: any): void;
    registerOnTouched(fn: any): void;
    private recaptchaCallback(response);
    private recaptchaExpiredCallback();
}