mobx-vue/esm/observer.js

import * as tslib_1 from "tslib";
/**
 * @author Kuitos
 * @homepage https://github.com/kuitos/
 * @since 2018-05-22 16:39
 */
import { Reaction } from 'mobx';
import Vue from 'vue';
import collectDataForVue from './collectData';
// @formatter:off
// tslint:disable-next-line
var noop = function () { };
var disposerSymbol = Symbol('disposerSymbol');
function observer(Component) {
    var name = Component.name || Component._componentTag || (Component.constructor && Component.constructor.name) || '<component>';
    var originalOptions = typeof Component === 'object' ? Component : Component.options;
    // To not mutate the original component options, we need to construct a new one
    var dataDefinition = originalOptions.data;
    var options = tslib_1.__assign({}, originalOptions, { name: name,
        data: function (vm) {
            return collectDataForVue(vm || this, dataDefinition);
        }, 
        // overrider the cached constructor to avoid extending skip
        // @see https://github.com/vuejs/vue/blob/6cc070063bd211229dff5108c99f7d11b6778550/src/core/global-api/extend.js#L24
        _Ctor: {} });
    // we couldn't use the Component as super class when Component was a VueClass, that will invoke the lifecycle twice after we called Component.extend
    var superProto = typeof Component === 'function' && Object.getPrototypeOf(Component.prototype);
    var Super = superProto instanceof Vue ? superProto.constructor : Vue;
    var ExtendedComponent = Super.extend(options);
    var _a = ExtendedComponent.prototype, $mount = _a.$mount, $destroy = _a.$destroy;
    ExtendedComponent.prototype.$mount = function () {
        var _this = this;
        var args = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            args[_i] = arguments[_i];
        }
        var mounted = false;
        this[disposerSymbol] = noop;
        var nativeRenderOfVue;
        var reactiveRender = function () {
            reaction.track(function () {
                if (!mounted) {
                    $mount.apply(_this, args);
                    mounted = true;
                    nativeRenderOfVue = _this._watcher.getter;
                    // rewrite the native render method of vue with our reactive tracker render
                    // thus if component updated by vue watcher, we could re track and collect dependencies by mobx
                    _this._watcher.getter = reactiveRender;
                }
                else {
                    nativeRenderOfVue.call(_this, _this);
                }
            });
            return _this;
        };
        var reaction = new Reaction(name + ".render()", reactiveRender);
        this[disposerSymbol] = reaction.getDisposer();
        return reactiveRender();
    };
    ExtendedComponent.prototype.$destroy = function () {
        this[disposerSymbol]();
        $destroy.apply(this);
    };
    var extendedComponentNamePropertyDescriptor = Object.getOwnPropertyDescriptor(ExtendedComponent, 'name') || {};
    if (extendedComponentNamePropertyDescriptor.configurable === true) {
        Object.defineProperty(ExtendedComponent, 'name', {
            writable: false,
            value: name,
            enumerable: false,
            configurable: false,
        });
    }
    return ExtendedComponent;
}
export { observer, observer as Observer, };