vue-class-component.js

/**
  * vue-class-component v7.2.2
  * (c) 2015-present Evan You
  * @license MIT
  */
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('vue')) :
  typeof define === 'function' && define.amd ? define(['exports', 'vue'], factory) :
  (global = global || self, factory(global.VueClassComponent = {}, global.Vue));
}(this, (function (exports, Vue) { 'use strict';

  Vue = Vue && Vue.hasOwnProperty('default') ? Vue['default'] : Vue;

  function _typeof(obj) {
    if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") {
      _typeof = function (obj) {
        return typeof obj;
      };
    } else {
      _typeof = function (obj) {
        return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
      };
    }

    return _typeof(obj);
  }

  function _defineProperty(obj, key, value) {
    if (key in obj) {
      Object.defineProperty(obj, key, {
        value: value,
        enumerable: true,
        configurable: true,
        writable: true
      });
    } else {
      obj[key] = value;
    }

    return obj;
  }

  function _toConsumableArray(arr) {
    return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _nonIterableSpread();
  }

  function _arrayWithoutHoles(arr) {
    if (Array.isArray(arr)) {
      for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) arr2[i] = arr[i];

      return arr2;
    }
  }

  function _iterableToArray(iter) {
    if (Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === "[object Arguments]") return Array.from(iter);
  }

  function _nonIterableSpread() {
    throw new TypeError("Invalid attempt to spread non-iterable instance");
  }

  // The rational behind the verbose Reflect-feature check below is the fact that there are polyfills
  // which add an implementation for Reflect.defineMetadata but not for Reflect.getOwnMetadataKeys.
  // Without this check consumers will encounter hard to track down runtime errors.
  function reflectionIsSupported() {
    return typeof Reflect !== 'undefined' && Reflect.defineMetadata && Reflect.getOwnMetadataKeys;
  }
  function copyReflectionMetadata(to, from) {
    forwardMetadata(to, from);
    Object.getOwnPropertyNames(from.prototype).forEach(function (key) {
      forwardMetadata(to.prototype, from.prototype, key);
    });
    Object.getOwnPropertyNames(from).forEach(function (key) {
      forwardMetadata(to, from, key);
    });
  }

  function forwardMetadata(to, from, propertyKey) {
    var metaKeys = propertyKey ? Reflect.getOwnMetadataKeys(from, propertyKey) : Reflect.getOwnMetadataKeys(from);
    metaKeys.forEach(function (metaKey) {
      var metadata = propertyKey ? Reflect.getOwnMetadata(metaKey, from, propertyKey) : Reflect.getOwnMetadata(metaKey, from);

      if (propertyKey) {
        Reflect.defineMetadata(metaKey, metadata, to, propertyKey);
      } else {
        Reflect.defineMetadata(metaKey, metadata, to);
      }
    });
  }

  var fakeArray = {
    __proto__: []
  };
  var hasProto = fakeArray instanceof Array;
  function createDecorator(factory) {
    return function (target, key, index) {
      var Ctor = typeof target === 'function' ? target : target.constructor;

      if (!Ctor.__decorators__) {
        Ctor.__decorators__ = [];
      }

      if (typeof index !== 'number') {
        index = undefined;
      }

      Ctor.__decorators__.push(function (options) {
        return factory(options, key, index);
      });
    };
  }
  function mixins() {
    for (var _len = arguments.length, Ctors = new Array(_len), _key = 0; _key < _len; _key++) {
      Ctors[_key] = arguments[_key];
    }

    return Vue.extend({
      mixins: Ctors
    });
  }
  function isPrimitive(value) {
    var type = _typeof(value);

    return value == null || type !== 'object' && type !== 'function';
  }
  function warn(message) {
    if (typeof console !== 'undefined') {
      console.warn('[vue-class-component] ' + message);
    }
  }

  function collectDataFromConstructor(vm, Component) {
    // override _init to prevent to init as Vue instance
    var originalInit = Component.prototype._init;

    Component.prototype._init = function () {
      var _this = this;

      // proxy to actual vm
      var keys = Object.getOwnPropertyNames(vm); // 2.2.0 compat (props are no longer exposed as self properties)

      if (vm.$options.props) {
        for (var key in vm.$options.props) {
          if (!vm.hasOwnProperty(key)) {
            keys.push(key);
          }
        }
      }

      keys.forEach(function (key) {
        if (key.charAt(0) !== '_') {
          Object.defineProperty(_this, key, {
            get: function get() {
              return vm[key];
            },
            set: function set(value) {
              vm[key] = value;
            },
            configurable: true
          });
        }
      });
    }; // should be acquired class property values


    var data = new Component(); // restore original _init to avoid memory leak (#209)

    Component.prototype._init = originalInit; // create plain data object

    var plainData = {};
    Object.keys(data).forEach(function (key) {
      if (data[key] !== undefined) {
        plainData[key] = data[key];
      }
    });

    {
      if (!(Component.prototype instanceof Vue) && Object.keys(plainData).length > 0) {
        warn('Component class must inherit Vue or its descendant class ' + 'when class property is used.');
      }
    }

    return plainData;
  }

  var $internalHooks = ['data', 'beforeCreate', 'created', 'beforeMount', 'mounted', 'beforeDestroy', 'destroyed', 'beforeUpdate', 'updated', 'activated', 'deactivated', 'render', 'errorCaptured', 'serverPrefetch' // 2.6
  ];
  function componentFactory(Component) {
    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
    options.name = options.name || Component._componentTag || Component.name; // prototype props.

    var proto = Component.prototype;
    Object.getOwnPropertyNames(proto).forEach(function (key) {
      if (key === 'constructor') {
        return;
      } // hooks


      if ($internalHooks.indexOf(key) > -1) {
        options[key] = proto[key];
        return;
      }

      var descriptor = Object.getOwnPropertyDescriptor(proto, key);

      if (descriptor.value !== void 0) {
        // methods
        if (typeof descriptor.value === 'function') {
          (options.methods || (options.methods = {}))[key] = descriptor.value;
        } else {
          // typescript decorated data
          (options.mixins || (options.mixins = [])).push({
            data: function data() {
              return _defineProperty({}, key, descriptor.value);
            }
          });
        }
      } else if (descriptor.get || descriptor.set) {
        // computed properties
        (options.computed || (options.computed = {}))[key] = {
          get: descriptor.get,
          set: descriptor.set
        };
      }
    });
    (options.mixins || (options.mixins = [])).push({
      data: function data() {
        return collectDataFromConstructor(this, Component);
      }
    }); // decorate options

    var decorators = Component.__decorators__;

    if (decorators) {
      decorators.forEach(function (fn) {
        return fn(options);
      });
      delete Component.__decorators__;
    } // find super


    var superProto = Object.getPrototypeOf(Component.prototype);
    var Super = superProto instanceof Vue ? superProto.constructor : Vue;
    var Extended = Super.extend(options);
    forwardStaticMembers(Extended, Component, Super);

    if (reflectionIsSupported()) {
      copyReflectionMetadata(Extended, Component);
    }

    return Extended;
  }
  var reservedPropertyNames = [// Unique id
  'cid', // Super Vue constructor
  'super', // Component options that will be used by the component
  'options', 'superOptions', 'extendOptions', 'sealedOptions', // Private assets
  'component', 'directive', 'filter'];
  var shouldIgnore = {
    prototype: true,
    arguments: true,
    callee: true,
    caller: true
  };

  function forwardStaticMembers(Extended, Original, Super) {
    // We have to use getOwnPropertyNames since Babel registers methods as non-enumerable
    Object.getOwnPropertyNames(Original).forEach(function (key) {
      // Skip the properties that should not be overwritten
      if (shouldIgnore[key]) {
        return;
      } // Some browsers does not allow reconfigure built-in properties


      var extendedDescriptor = Object.getOwnPropertyDescriptor(Extended, key);

      if (extendedDescriptor && !extendedDescriptor.configurable) {
        return;
      }

      var descriptor = Object.getOwnPropertyDescriptor(Original, key); // If the user agent does not support `__proto__` or its family (IE <= 10),
      // the sub class properties may be inherited properties from the super class in TypeScript.
      // We need to exclude such properties to prevent to overwrite
      // the component options object which stored on the extended constructor (See #192).
      // If the value is a referenced value (object or function),
      // we can check equality of them and exclude it if they have the same reference.
      // If it is a primitive value, it will be forwarded for safety.

      if (!hasProto) {
        // Only `cid` is explicitly exluded from property forwarding
        // because we cannot detect whether it is a inherited property or not
        // on the no `__proto__` environment even though the property is reserved.
        if (key === 'cid') {
          return;
        }

        var superDescriptor = Object.getOwnPropertyDescriptor(Super, key);

        if (!isPrimitive(descriptor.value) && superDescriptor && superDescriptor.value === descriptor.value) {
          return;
        }
      } // Warn if the users manually declare reserved properties


      if ( reservedPropertyNames.indexOf(key) >= 0) {
        warn("Static property name '".concat(key, "' declared on class '").concat(Original.name, "' ") + 'conflicts with reserved property name of Vue internal. ' + 'It may cause unexpected behavior of the component. Consider renaming the property.');
      }

      Object.defineProperty(Extended, key, descriptor);
    });
  }

  function Component(options) {
    if (typeof options === 'function') {
      return componentFactory(options);
    }

    return function (Component) {
      return componentFactory(Component, options);
    };
  }

  Component.registerHooks = function registerHooks(keys) {
    $internalHooks.push.apply($internalHooks, _toConsumableArray(keys));
  };

  exports.createDecorator = createDecorator;
  exports.default = Component;
  exports.mixins = mixins;

  Object.defineProperty(exports, '__esModule', { value: true });

})));