import { Logger } from '@nestjs/common';
import { VerifyResponseOptions } from '../../interfaces/verify-response-decorator-options';
import { VerifyResponseV3 } from '../../interfaces/verify-response';
import { AbstractGoogleRecaptchaValidator } from './abstract-google-recaptcha-validator';
import { RecaptchaVerificationResult } from '../../models/recaptcha-verification-result';
import { AxiosInstance } from 'axios';
import { RecaptchaConfigRef } from '../../models/recaptcha-config-ref';
export declare class GoogleRecaptchaValidator extends AbstractGoogleRecaptchaValidator<VerifyResponseV3> {
    private readonly axios;
    private readonly logger;
    private readonly defaultNetwork;
    private readonly headers;
    constructor(axios: AxiosInstance, logger: Logger, configRef: RecaptchaConfigRef);
    /**
     * @throws GoogleRecaptchaNetworkException
     * @param {VerifyResponseOptions} options
     */
    validate(options: VerifyResponseOptions): Promise<RecaptchaVerificationResult<VerifyResponseV3>>;
    private verifyResponse;
    private isUseV3;
}