Question

以下是手动拆分代码之前的相关代码：

import React from 'react';
import {BrowserRouter, Switch, Route} from 'react-router-dom';
import Protected from '../container-components/authentication/protected.js';
import LoginContainer from '../container-components/authentication/loginContainer.js';
import axios from 'axios';
import {Loader} from 'semantic-ui-react';

  render(){
    if(this.state.isLoading){
      return(
        <div>
          <Loader style={{marginTop: '30vh'}} active inline='centered'/>
        </div>
      )
    }
    return(
        <BrowserRouter>
            <div>
              <Switch>
                <Route
                  path='/stream'
                  render={(props) =>
                    <Protected {...props}
                    isLoggedIn={this.state.isLoggedIn}
                    onLogout={this.handleLogout}
                    user={this.state.user}
                    />
                  }
                />
                <Route
                  path='*'
                  render={(props) =>
                    <LoginContainer {...props}
                      isLoggedIn={this.state.isLoggedIn}
                      onLogin={this.handleLogin}
                    />
                  }
                />
              </Switch>
            </div>
        </BrowserRouter>
    )

这是代码拆分后的代码：

import React from 'react';
import {BrowserRouter, Switch, Route} from 'react-router-dom';
import LoginContainer from '../container-components/authentication/loginContainer.js';
import axios from 'axios';
import {Loader} from 'semantic-ui-react';
import Loadable from 'react-loadable';

const LoadableProtected = Loadable({
  loader: () => import('../container-components/authentication/protected.js'),
  loading: Loader,
  render(loaded, props) {
    let Component = loaded.default;
    return <Component {...props} />
  }
})

  render(){
    if(this.state.isLoading){
      return(
        <div>
          <Loader style={{marginTop: '30vh'}} active inline='centered'/>
        </div>
      )
    }
    return(
        <BrowserRouter>
            <div>
              <Switch>
                <Route
                  path='/stream'
                  render={(props) =>
                    <LoadableProtected {...props}
                      isLoggedIn={this.state.isLoggedIn}
                      onLogout={this.handleLogout}
                      user={this.state.user}
                    />
                  }
                />
                <Route
                  path='*'
                  render={(props) =>
                    <LoginContainer {...props}
                      isLoggedIn={this.state.isLoggedIn}
                      onLogin={this.handleLogin}
                    />
                  }
                />
              </Switch>
            </div>
        </BrowserRouter>
    )
  }

我也在这里尝试了本教程：https://serverless-stack.com/chapters/code-splitting-in-create-react-app.html

这似乎与react-loadable正在做的一样。

我正在将webpack v4与弹出的create-react-app和以下babel软件包/插件一起使用：

“ @ babel / cli”：“ ^ 7.2.0” “ @ babel / plugin-proposal-class-properties”：“ ^ 7.2.1” “ @ babel / plugin-proposal-export-default-from”：“ ^ 7.2.0” “ @ babel / preset-env”：“ ^ 7.2.0” “橡子”：“ ^ 6.0.4” “ babel-eslint”：“ ^ 9.0.0” “ babel-plugin-动态导入节点”：“ ^ 2.2.0” “ babel-plugin-lodash”：“ ^ 3.3.4” “ babel-core”：“ ^ 6.26.3”， “ babel-jest”：“ 20.0.3”， “ babel-loader”：“ ^ 8.0.4”， “ babel-preset-react-app”：“ ^ 6.1.0”， “ babel-runtime”：“ *”，

这没什么大不了的，它并没有减小捆绑包的大小，我只是无法弄清楚为什么会这样。

Answer 1

也许您可以尝试使用TerserPLugin来最小化JS？

  optimization: {
    minimizer: [new TerserPlugin({ /* additional options here */ })],
  },

来源：https://github.com/webpack-contrib/terser-webpack-plugin

使用create-react-app

1 个答案: