import { Result, ValueObject } from 'rich-domain';
export declare class UserName extends ValueObject<string> {
    protected static readonly MAX_LENGTH: number;
    protected static readonly MIN_LENGTH: number;
    protected static readonly MESSAGE: string;
    private constructor();
    /**
     * @returns capitalized full name
     */
    value(): string;
    /**
     *
     * @returns capitalize full name as string
     */
    static capitalize(fullName: string): string;
    /**
     * @description get upper case name from instance
     * @returns upperCase full name as string
     */
    upperCase(): string;
    /**
     * @description get lower case name from instance
     * @returns lowerCase full name as string
     */
    lowerCase(): string;
    /**
     *
     * @returns check if has a second name
     */
    hasMiddleName(): boolean;
    title(title: string): {
        firstName: () => string;
        fullName: () => string;
        lastName: () => string;
        middleName: () => string;
    };
    /**
     *
     * @returns check if has last name `first middle last`
     */
    hasLastName(): boolean;
    /**
     *
     * @returns first name
     */
    firstName(title?: string): string;
    /**
     *
     * @returns middle name if it has more than 2 names, else returns a empty string
     */
    middleName(): string;
    /**
     *
     * @returns last name if exists else return the name
     */
    lastName(): string;
    /**
     * @returns initials as string
     * @param separator as string char to separate letters
     * @default separator (empty)
     * @example
     * for a name "Thomas A. Anderson" = "TAA"
     */
    initials(separator?: string): string;
    /**
     *
     * @param value value as string
     * @returns instance of UserName or throw an error
     */
    static init(value: string): UserName;
    /**
     * @description check name length min(2) max(40)
     * @param value name as string
     * @returns true if provided value is valid and false if not
     */
    static isValid(value: string): boolean;
    /**
     * @description check name length min(2) max(40)
     * @param value name as string
     * @returns true if provided value is valid and false if not
     */
    static isValidProps(value: string): boolean;
    static create(value: string): Result<UserName | null>;
}
export default UserName;