react WebPack重配置

react项目创建流程

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react 项目搭建

系统: windows

1.安装 node

如果遇到 windows 没有权限安装 msi 文件.打开 cmd,运行msiexec /package 文件路径.

查看是否安装成功,打开终端

node -v
npm -v

2.安装 vscode 编辑器

vscode 下载地址.一路 next

3.安装 react 项目脚手架

打开终端

npm install -g create-react-app

4.创建 react 项目

create-react-app myApp
cd myApp
npm install
npm start
code .

5.安装项目依赖

npm i react-router-dom mobx mobx-react axios qs --save

配置装饰器语法支持

npm i --save-dev @babel/plugin-proposal-class-properties @babel/plugin-proposal-decorators

解压 webpack 配置

npm run eject

修改webpack.config.dev.js和webpack.config.prod.js

{
    test: /.(js|mjs|jsx|ts|tsx)$/,
    include: paths.appSrc,
    loader: require.resolve('babel-loader'),
    options: {
        customize: require.resolve('babel-preset-react-app/webpack-overrides'),

        plugins: [
+           ['@babel/plugin-proposal-decorators', { legacy: true }],
+           ['@babel/plugin-proposal-class-properties', { loose: true }],
            [
                require.resolve('babel-plugin-named-asset-import'),
                {
                    loaderMap: {
                        svg: {
                            ReactComponent: '@svgr/webpack?-prettier,-svgo![path]'
                        }
                    }
                }
            ]
        ],
        // This is a feature of `babel-loader` for webpack (not Babel itself).
        // It enables caching results in ./node_modules/.cache/babel-loader/
        // directory for faster rebuilds.
        cacheDirectory: true,
        // Don't waste time on Gzipping the cache
        cacheCompression: false
    }
}

6.配置路由

在项目中新建srcpages文件夹.
新建页面文件srcpagesHomeindex.js

// Homeindex.js

/**
 * @name Home
 * @desc 首页
 */

import React, { Component } from 'react'

class Home extends Component {
    render() {
        return (
            <div>
                <h1>Home</h1>
            </div>
        )
    }
}

export default Home

新建router.js

/**
 * @name Router
 * @desc 页面路由配置
 */

import React, { Component } from 'react'
import { Switch, Route, Redirect } from 'react-router-dom'
import Home from './pages/Home'

class Router extends Component {
    render() {
        return (
            <Switch>
                <Redirect path="/" to="/home" exact />
                <Route path="/home" component={Home} />
            </Switch>
        )
    }
}

export default Router

7.配置 http 请求插件

新建srcutilsaxios.js

import axios from 'axios'
import qs from 'qs'

const axiosIns = axios.create({
    baseURL: '/',
    timeout: 10000,
    responseType: 'json',
    transformRequest: [data => qs.stringify(data)],
    headers: {
        'Content-Type': 'application/x-www-form-urlencoded;charset=utf-8'
    }
})

axiosIns.interceptors.request.use(
    config => {
        return config
    },
    error => Promise.reject(error)
)

axiosIns.interceptors.response.use(result => result.data, error => Promise.reject(error))

const get = (url, params = null, config = {}) => axiosIns.get(url, { ...config, params })
const post = axiosIns.post
const all = axiosIns.all
export { get, post, all }

8.配置状态管理插件

8.1 新建`srcutilsmobx-store.js`

/**
 * @name Store
 * @desc store 构造器
 */

import { action, configure } from 'mobx'

configure({ enforceActions: 'observed' })

class Store {
    constructor(modules) {
        Object.keys(modules).forEach(moduleName => {
            this[moduleName] = new modules[moduleName]({
                mapStore: this.mapStore.bind(this),
                rootState: this.rootState
            })
        })
    }

    rootState = {}

    mapStore(moduleName) {
        if (moduleName) {
            return this[moduleName] ? this[moduleName] : console.error(new Error(`has no store named "${moduleName}"`))
        } else {
            return this
        }
    }
}

let $mapStore = null
let $rootState = null

class StoreModule {
    constructor({ mapStore, rootState }) {
        $mapStore = mapStore
        $rootState = rootState
    }

    mapStore(name) {
        return $mapStore(name)
    }

    getRootState() {
        return $rootState
    }

    setState(options) {
        action(opt => {
            Object.keys(opt).forEach(key => {
                if (Object.prototype.hasOwnProperty.call(this, key)) {
                    this[key] = opt[key]
                } else {
                    console.error(new Error(`mobx action "setState": has no attribute named "${key}"`))
                }
            })
        })(options)
    }
}

export { Store, StoreModule }

8.2 创建一个状态模块,新建`srcstore est-store.js`

/**
 * @name Test
 * @desc
 */

import { observable, action, configure } from 'mobx'
import { StoreModule } from '../utils/mobx-store'

configure({ enforceActions: 'observed' })

class Test extends StoreModule {
    @observable
    msg = ''

    @action.bound
    handleChangeMsg(e) {
        this.setState({ msg: e.target.value })
    }
}

export default Test

8.3 配置 store

新建srcstoreindex.js

/**
 * @name Store
 * @desc 合并全部子模块的store
 */

import { Store } from '../utils/mobx-store'
import Test from './test-store.js'

export default new Store({ Test })

9.注入 router 和 store

修改index.js

import React from 'react'
import ReactDOM from 'react-dom'
import { BrowserRouter } from 'react-router-dom'
import { Provider } from 'mobx-react'
import store from './store'
import App from './App'

ReactDOM.render(
    <Provider {...store}>
        <BrowserRouter>
            <App />
        </BrowserRouter>
    </Provider>,
    document.getElementById('root')
)

修改App.js

import React, { Component } from 'react'
import Routes from './router'

class App extends Component {
    render() {
        return (
            <div classes="container">
                <Routes />
            </div>
        )
    }
}

export default App

修改srcpagesHomeindex.js

/**
 * @name Home
 * @desc 首页
 * @author
 * @version
 */

import React, { Component } from 'react'
import { inject, observer } from 'mobx-react'

@inject('Test')
@observer
class Home extends Component {
    render() {
        return (
            <div>
                <h1>Home</h1>
                <p>msg: {this.props.Test.msg}</p>
                <p>
                    <input type="text" value={this.props.Test.msg} onChange={this.props.Test.handleChangeMsg} />
                </p>
            </div>
        )
    }
}

export default Home

11.http 请求例子

// srcstore	est-store.js

/**
 * @name Test
 * @desc
 */

import { observable, action, configure } from 'mobx'
import { StoreModule } from '../utils/mobx-store'
import { post } from '../utils/axios'

configure({ enforceActions: true })

class Test extends StoreModule {
    @observable
    msg = ''

    @action.bound
    handleChangeMsg(e) {
        this.setState({ msg: e.target.value })
    }

    @action.bound
    async getSomething() {
        try {
            const res = await post('/some-data', { type: 'news' })
        } catch (err) {
            console.error(err)
        }
    }
}

export default Test

12.打包

npm run build

安装本地服务器启动工具

npm install -g serve

启动打包的项目

serve -s ./build