import { AuthenticationCodeInfoUnion, ErrorUnion } from '../outputs';
/**
 * Sends a code to verify a phone number to be added to a user's Telegram Passport
 * @param {Object} params
 * @param {string} [params.phoneNumber] - The phone number of the user, in international
 * format
 * @param {boolean} [params.allowFlashCall] - Pass true if the authentication code
 * may be sent via flash call to the specified phone number
 * @param {boolean} [params.isCurrentPhoneNumber] - Pass true if the phone number
 * is used on the current device. Ignored if allow_flash_call is false
 * @param {Object} state
 * @returns {AuthenticationCodeInfoUnion | ErrorUnion}
 */
export declare type SendPhoneNumberVerificationCodeMethod = <ResponseT = AuthenticationCodeInfoUnion>(params: SendPhoneNumberVerificationCodeParams, state?: Record<string, any>) => Promise<ResponseT | ErrorUnion>;
export interface SendPhoneNumberVerificationCodeParams {
    /** The phone number of the user, in international format */
    phoneNumber?: string;
    /**
     * Pass true if the authentication code may be sent via flash call to the specified
     * phone number
     */
    allowFlashCall?: boolean;
    /**
     * Pass true if the phone number is used on the current device. Ignored if allow_flash_call
     * is false
     */
    isCurrentPhoneNumber?: boolean;
}