import { VerificationMethod } from "./types";
/**
 * Regular expressions for contact validation
 */
export declare const phoneRegex: RegExp;
export declare const emailRegex: RegExp;
/**
 * Detect the type of contact value
 * @param value - The contact value to check (email or phone number)
 * @returns The contact type: 'EMAIL', 'PHONE', 'WHATSAPP', or 'UNKNOWN'
 */
export declare const detectContactType: (value: string) => "EMAIL" | "PHONE" | "WHATSAPP" | "UNKNOWN";
/**
 * Validate if a contact value is valid (either email or phone)
 * @param value - The contact value to validate
 * @returns True if valid email or phone, false otherwise
 */
export declare const validateContactValue: (value: string) => boolean;
export declare const getVerificationMethod: () => VerificationMethod;
export declare const generateOTP: (length?: number) => string;
export declare const getOTPExpiry: (minutes?: number) => Date;
export declare const sendSMS: (phoneNumber: string, message: string) => Promise<boolean>;
export declare const sendEmail: (to: string, subject: string, html: string) => Promise<boolean>;
export declare const sendVerificationCode: (method: VerificationMethod, target: string, otp: string) => Promise<boolean>;