Function stateMixin

06.Router/basic/js/vue.js:7830–8068

(Vue)

  });

  function stateMixin (Vue) {
    /**
     * Accessor for `$data` property, since setting $data
     * requires observing the new object and updating
     * proxied properties.
     */

    Object.defineProperty(Vue.prototype, '$data', {
      get: function get() {
        return this._data;
      },
      set: function set(newData) {
        if (newData !== this._data) {
          this._setData(newData);
        }
      }
    });

    /**
     * Setup the scope of an instance, which contains:
     * - observed data
     * - computed properties
     * - user methods
     * - meta properties
     */

    Vue.prototype._initState = function () {
      this._initProps();
      this._initMeta();
      this._initMethods();
      this._initData();
      this._initComputed();
    };

    /**
     * Initialize props.
     */

    Vue.prototype._initProps = function () {
      var options = this.$options;
      var el = options.el;
      var props = options.props;
      if (props && !el) {
        'development' !== 'production' && warn('Props will not be compiled if no `el` option is ' + 'provided at instantiation.', this);
      }
      // make sure to convert string selectors into element now
      el = options.el = query(el);
      this._propsUnlinkFn = el && el.nodeType === 1 && props
      // props must be linked in proper scope if inside v-for
      ? compileAndLinkProps(this, el, props, this._scope) : null;
    };

    /**
     * Initialize the data.
     */

    Vue.prototype._initData = function () {
      var dataFn = this.$options.data;