javascript - Webpack & React getComponent() 不加载组件(异步)

Question

我正在使用 Webpack 3.7.1 和 React 15.6.1，我正在尝试动态加载不同的组件。

我想做什么

• 从代码拆分时创建的不同 block webpack 异步加载组件

我做了什么

• 使用getComponent() 和import() 生成 block
• 正确配置 webpack.config 文件以便创建 block (代码拆分)

问题

• block 在访问路由时生成但未加载正确
• getComponent() 似乎不起作用

我的 Webpack.config 文件

module.exports = {
  devServer: {
    historyApiFallback: true
  },
  entry: {
    app:"./src/index.js",
    vendor: [
      "axios",
      "react",
      "react-dom",
      "react-redux",
      "react-router",
      "react-router-dom",
      "redux"
    ]
  },
  output: {
    path: __dirname + '/public/views',
    filename: '[name].js',
    chunkFilename: '[chunkhash].chunk.js',
    publicPath: "/views/"
  },
  module: {
    loaders: [
      {
        test: /\.js$/,
        loader: "babel-loader",
        exclude: [/node_modules/, /pdfmake.js$/]
      },
      {
        test: /\.json$/,
        loader: "json-loader"
      }
    ]
  },
  plugins: [
    new webpack.optimize.CommonsChunkPlugin({
      name: "vendor",
      minChunks: Infinity
    }),
    new webpack.NamedModulesPlugin(),
    new HtmlWebpackPlugin({
      filename:  __dirname + "/views/index.ejs",
      template: __dirname + "/views/template.ejs",
      inject: 'body',
      chunks: ['vendor', 'app'],
      chunksSortMode: 'manual'
    }),
    new PreloadWebpackPlugin({
      rel: "preload",
      include: ["vendor", "app"]
    }),
    new webpack.optimize.OccurrenceOrderPlugin(),
  ]
};

我的 index.js 文件(我的 React 应用程序的根目录)

import React from "react";
import ReactDOM from "react-dom";
import { Provider } from "react-redux";
import { createStore, applyMiddleware } from "redux";
import { BrowserRouter, Route, Switch } from "react-router-dom";

import promise from "redux-promise";
import reducers from "./reducers";
import AppInit from "./containers/appInit";



import ProfRegisteringModal from "./containers/modals/register_prof_explanation_modal";

const createStoreWithMiddleware = applyMiddleware(promise)(createStore);

function errorLoading(err) {
  console.error("Dynamic page loading failed", err);
}

function loadRoute(cb) {
  return module => cb(null, module.default);
}

console.log("testst");

ReactDOM.render(
  <Provider store={createStoreWithMiddleware(reducers)}>
    <AppInit>
      <BrowserRouter>
        <div style={{ height: "100%" }}>
          <ProfRegisteringModal />
          <Switch>
            <Route
              path="/inscription/:user"
              getComponent={(location, callback) => {
                import(
                  "./components/registering/registering_landing_page.js"
                )
                  .then(loadRoute(cb))
                  .catch(errorLoading);
              }}
            />
            <Route
              path="/inscription"
              getComponent={(location, callback) => {
                import(
                  "./components/registering/registering_landing_page.js"
                )
                  .then(loadRoute(cb))
                  .catch(errorLoading);
              }}
            />
            <Route
              path="/connexion"
              getComponent={(location, callback) => {
                import("./containers/registering/signing_in.js")
                  .then(loadRoute(cb))
                  .catch(errorLoading);
              }}
            />
            <Route
              path="/equipe"
              getComponent={(location, callback) => {
                import("./components/team_pres.js")
                  .then(loadRoute(cb))
                  .catch(errorLoading);
              }}
            />
            <Route
              path="/"
              getComponent={(location, callback) => {
                import("./containers/app_container.js")
                  .then(loadRoute(cb))
                  .catch(errorLoading);
              }}
            />
          </Switch>
        </div>
      </BrowserRouter>
    </AppInit>
  </Provider>,
  document.querySelector(".root")
);

此文件 index.js 已正确加载，因为我可以看到 console.log("test") 出现在我的控制台中。

访问任何路由时都没有正确加载任何组件。

非常感谢您的帮助

更新

一定要有 Babel-polyfill!!我是这样解决的

Answer 1

您的 webpack.config 文件似乎没问题。我所做的工作是在

中创建异步组件

import React, { Component } from "react";

export default function asyncComponent(importComponent) {
  class AsyncComponent extends Component {
    constructor(props) {
      super(props);

      this.state = {
        component: null
      };
    }

    async componentDidMount() {
      const { default: component } = await importComponent();

      this.setState({
        component: component
      });
    }

    render() {
      const C = this.state.component;

      return C ? <C {...this.props} /> : null;
    }
  }

  return AsyncComponent;
}

然后使用如下

const RegisterPage = asyncComponent(() => import("./components/registering/registering_landing_page.js"));

我认为 Route 没有 getComponent 属性，但我可能错了。您的 Route 语句应如下所示。

<Route
  path="/register"
  render: props => <RegisterPage {...props} />
/>