Function hasOwn

06.Router/basic/js/vue.js:79–81

* Check whether the object has the property. * * @param {Object} obj * @param {String} key * @return {Boolean}

(obj, key)

   */

  function hasOwn(obj, key) {
    return hasOwnProperty.call(obj, key);
  }

  /**
   * Check if an expression is a literal value.