export declare const emailRegex: RegExp; export declare const combineValidators: (...validators: any) => (...value: any) => any; export declare function isFalsy(item: any): boolean; export declare const requiredValidator: (value?: string | number | boolean | string[] | undefined, message?: string | undefined) => string; export declare const emailValidator: (email: string) => "" | "Please enter a valid email address"; export declare const passwordValidator: (password: string) => string; export declare const confirmPasswordValidator: (confirmPassword: string, password: string) => string; export declare const confirmEmailValidator: (confirmEmail: string, email: string) => string;