/**
 * @fileoverview Check whether the given variable is a string or not.
 * @author NHN FE Development Lab <dl_javascript@nhn.com>
 */

'use strict';

/**
 * Check whether the given variable is a string or not.
 * If the given variable is a string, return true.
 * @param {*} obj - Target for checking
 * @returns {boolean} Is string?
 * @memberof module:type
 */
function isString(obj) {
  return typeof obj === 'string' || obj instanceof String;
}

module.exports = isString;