text: /**
   * Converts value entered as number
   * or string to integer value.
   *
   * @param {String} value
   * @returns {Number}
   */
  export function toInt (value) {
    return parseInt(value)
  }
  
  /**
   * Indicates whether the specified value is a string.
   *
   * @param  {*}   value
   * @return {Boolean}
   */
  export function isString (value) {
    return typeof value === 'string'
  }
  
  /**
   * Indicates whether the specified value is an object.
   *
   * @param  {*} value
   * @return {Boolean}
   *
   * @see https://github.com/jashkenas/underscore
   */
  export function isObject (value) {
    let type = typeof value
  
    return type === 'function' || type === 'object' && !!value // eslint-disable-line no-mixed-operators
  }
  
  /**
   * Indicates whether the specified value is a number.
   *
   * @param  {*} value
   * @return {Boolean}
   */
  export function isNumber (value) {
    return typeof value === 'number'
  }
  
  /**
   * Indicates whether the specified value is a function.
   *
   * @param  {*} value
   * @return {Boolean}
   */
  export function isFunction (value) {
    return typeof value === 'function'
  }
  
  /**
   * Indicates whether the specified value is undefined.
   *
   * @param  {*} value
   * @return {Boolean}
   */
  export function isUndefined (value) {
    return typeof value === 'undefined'
  }
  
  /**
   * Indicates whether the specified value is an array.
   *
   * @param  {*} value
   * @return {Boolean}
   */
  export function isArray (value) {
    return value.constructor === Array
  }
  