How to use

_has

function

in

lodash

/**
   * Checks if a value exists for 'key' in the config
   *
   * @param {string} key Key to check
   * @return bool Whether or not the config value exists
   *
   * @method has
   * @public
   */
  has(key) {
    return _has(this.values, key);
  }