/**
 * Types
 *
 * Utility class for working with variable types.
 *
 * @module
 * @name Types
 */
export class Types {
    /**
     * Gets the type of a variable.
     *
     * @param {*} data - The data whose type is to be determined.
     * @returns {string} The type of the variable ('undefined', 'object', 'function', 'array', etc.).
     */
    static getType(data: any): string;
    /**
     * Checks if a value is undefined.
     *
     * @param {*} data - The data to check.
     * @returns {boolean} True if the data is undefined.
     */
    static isUndefined(data: any): boolean;
    /**
     * Checks if a value is an object (excluding arrays).
     *
     * @param {*} data - The data to check.
     * @returns {boolean} True if the data is a plain object.
     */
    static isObject(data: any): boolean;
    /**
     * Checks if a value is a function.
     *
     * @param {*} data - The data to check.
     * @returns {boolean} True if the data is a function.
     */
    static isFunction(data: any): boolean;
    /**
     * Checks if a value is a string.
     *
     * @param {*} data - The data to check.
     * @returns {boolean} True if the data is a string.
     */
    static isString(data: any): boolean;
    /**
     * Checks if a value is an array.
     *
     * @param {*} data - The data to check.
     * @returns {boolean} True if the data is an array.
     */
    static isArray(data: any): boolean;
}