使用create-react-app时，代码拆分会增加条目包大小

以下是手动代码拆分之前的相关代码：

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>
    )
  }

我也在这里试过这个教程：https://serverless-stack.com/chapters/code-splitting-in-create-react-app.html

这似乎是反应负载正在做的事情 .

我正在使用webpack v4和一个弹出的create-react-app以及以下的babel包/ plugins：

“@ 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“”acorn“：”^ 6.0.4“”babel-eslint“：”^ 9.0.0“”babel-plugin-dynamic-import-node “：”^ 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“：”*“，

这不是一个大问题，它不是减少捆绑大小，我似乎无法弄清楚为什么会这样 .