React技术前端开发那些事儿

webpack + react + typescript 项目从

2021-06-12  本文已影响0人  咕嘟咕嘟li

新建文件夹 redux-demo后,执行npm init

1. 执行以下命令
npm install --save-dev webpack webpack-cli webpack-dev-server

项目运行时会报错,所以进行了降级,webpack使用4.38.1,webpack-cli版本是3.3.2

2. 新建webpack.config.js文件内容如下
const path = require('path')
module.exports = {
  entry: {
    main: path.join(__dirname, 'src/index')
  },
  plugins: [
  ],
  module: {
    rules:[]
  },
  output: {
    path: path.join(__dirname, 'dist'),
    filename: 'bundle.js'
  }
}

3. 配置package.json的script
"start": "webpack-dev-server --port 1100",
"build": "webpack"
4. 新建public/index.html文件, 新建src/index.js文件
<!-- public/index.html -->
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <div id="root"></div>
</body>
</html>
// src/index.js
import React from 'react'
import ReactDOM from 'react-dom'

class App extends React.Component {
  render() {
    return <div>hello world</div>
  }
}

ReactDOM.render(<App />, document.getElementById('root'))
5. 执行以下命令
npm install --save-dev html-webpack-plugin clean-webpack-plugin

webpack.config.js配置如下插件

// 引入插件
const HtmlWebpackPlugin = require('html-webpack-plugin')
const {CleanWebpackPlugin} = require('clean-webpack-plugin')
  // 配置插件
  plugins: [
    new CleanWebpackPlugin(),
    new HtmlWebpackPlugin({
      title: 'papers-componsing',
      template: './public/index.html'
    })
  ]
6. 配置loader转译react文件
npm install --save-dev babel-loader @babel/core @babel/preset-env @babel/polyfill @babel/preset-env @babel/preset-react
7. 新建.babelrc 文件内容如下
{
  "presets": [
    "@babel/env",
    "@babel/react"
  ]
}
8. webpack.config.js添加babel-loader
{
  test: /(\.jsx|\.js)$/,
  use: {
    loader: 'babel-loader',
    options: {
      presets:['@babel/preset-env']
    }
  },
  exclude: /node_modules/
}
9. cnpm install --save react react-dom

执行npm start,运行项目后可看到页面上的hello world

CSS解析配置:

npm install --save-dev css-loader style-loader sass-loader node-sass file-loader

项目运行时会报错,所以进行了降级,sass-loader使用10.0.0

webpack.config.js rules配置如下:

{
  test: /\.s?[ac]ss$/i,
  use: [
    // 将 JS 字符串生成为 style 节点
    "style-loader",
    // 将 CSS 转化成 CommonJS 模块
    "css-loader",
    // 将 Sass 编译成 CSS
    "sass-loader"
  ]
},
{
  test: /\.(png|jpe?g|gif)$/i,
  use: [
    {
      loader: 'file-loader',
      options: {
        name: '[path][name].[ext]',
      }
    },
  ],
}

eslint解析配置

npm install --save-dev eslint eslint-loader
npx eslint --init
√ How would you like to use ESLint? · problems
√ What type of modules does your project use? · esm
√ Which framework does your project use? · react
√ Does your project use TypeScript? · Yes
√ Where does your code run? · browser
√ What format do you want your config file to be in? · JavaScript

选择完成后会自动生成eslintrc.js文件,并且会安装一些eslint的插件

要开启或关闭eslint规则就往eslintrc.js的rules里去配置,目前配置了如下规则:

  "rules": { 
    "@typescript-eslint/explicit-module-boundary-types": 0,
    "@typescript-eslint/no-var-requires": 0,
    "@typescript-eslint/no-explicit-any": 0,
    "array-bracket-spacing": [2, "never"],// 是否允许非空数组里面有多余的空格
    "comma-spacing": [2, {"before": false, "after": true}], // 逗号前禁止空格,逗号后要有空格
    "func-call-spacing": 2, // 要求或禁止在函数标识符和其调用之间有空格
    "key-spacing": [2, { "beforeColon": false, "afterColon": true }], // 对象字面量中冒号的前后空格
    // if for while 后都有一个空格
    "keyword-spacing": [2, { "overrides": { "if": { "after": true }, "for": { "after": true }, "while": { "after": true } } }],
    "typescript/no-var-requires": 0,
    "no-var-requires": 0,
    "no-multi-spaces": 2, // 不能有多余的空格
    // 空行最多不能超过1行,在文件结尾处强制执行最大数量的连续空行为1
    "no-multiple-empty-lines": ["error", { "max": 1, "maxEOF": 1 }],
    "prefer-const": 0, // 不校验变量是否被重新分配
    "quotes": [2, "single", "avoid-escape"], // 强制使用一致的反勾号、双引号或单引号
    "semi": [2, "never"], // 代码句尾不能有分号
    "semi-spacing": [2, {"before": false, "after": true}], // 分号前后空格
    "space-before-function-paren": [2, "always"], // 强制在 function的左括号之前使用一致的空格
    "space-infix-ops": ["error", {"int32Hint": false}], // 操作符周围都要有空格
  }

webpack.config.js module的rules第一个添加如下配置

  {
    test: /(\.jsx|\.js)$/,
    exclude: /node_modules/,
    loader: 'eslint-loader',
    enforce: 'pre' // 这里一定要配置,不然一堆报错,而且错误不在自己写的代码里
  }

typescript配置

.jsx文件名后缀改为.tsx

npm instal --save typescript @types/react @types/react-dom
npm install --save-dev awesome-typescript-loader
// 先不安装 source-map-loader

项目运行时会报错,所以进行了降级,typescript使用3.3.2

webpack.config.js的rules添加一项:

{
  test: /\.tsx?$/,
  loader: 'awesome-typescript-loader'
},
{
  test: /(\.tsx?|\.jsx|\.js)$/, // 之前配置的eslint-loader test再加一个tsx的配置
  exclude: /node_modules/,
  loader: 'eslint-loader',
  enforce: 'pre'
}

webpack.config.js中的extensions修改为 ['.js', '.jsx', '.tsx', '.ts', '.json']

新建tsconfig.json, 内容如下:

{
  "compilerOptions": {
    "target": "es5",
    "lib": [
      "dom",
      "dom.iterable",
      "esnext"
    ],
    "allowJs": true,
    "baseUrl": "src",
    "skipLibCheck": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "strict": true,
    "forceConsistentCasingInFileNames": true,
    "noFallthroughCasesInSwitch": true,
    "module": "esnext",
    "moduleResolution": "node",
    "resolveJsonModule": true,
    "isolatedModules": true,
    "noEmit": true,
    "jsx": "react",
    "paths": {
      "@/*": [
        "./*"
      ]
    },
    "suppressImplicitAnyIndexErrors": true
  },
  "include": [
    "src"
  ]
}

引入react路由模块

1. 安装
npm install --save react-router-dom @types/react-router-dom
2. 新建页面

在src/views文件夹下新建两个页面 paper.tsx、my-paper.tsx,里面的内容随便写点

3.新建router.tsx路由配置文件

在src/router文件夹下新建router.tsx路由配置文件,内容如下

import React from 'react'
import {BrowserRouter as Router, Route, Link} from 'react-router-dom'
import Paper from '@/views/paper'
import MyPaper from '@/views/my-paper'
const ConfigRouter = () => (
  <Router>
    <div>
      <div>
        <Link to="/paper">paper</Link>
        <Link to="/mypaper">my papers</Link>
      </div>
      <div className="m-page-content">
        <Route path="/paper" component={Paper}></Route>
        <Route path="/mypaper" component={MyPaper}></Route>
      </div>
    </div>
  </Router>
)
export default ConfigRouter
4. App.tsx文件修改为如下内容
import React from 'react'
import '@/css/app.scss'
import ConfigRouter from './router/router'
export default class App extends React.Component {
  render () {
    return (
      <ConfigRouter />
    )
  }
}
5. 页面刷新后404解决

在webpack.config.js文件中加入如下配置

module.exports = {
  // ... 此处代码省略
  devServer: {
    historyApiFallback: true
  }
}

Redux配置

安装redux react-redux @types/react-redux @types/redux

cnpm install --save redux react-redux @types/react-redux @types/redux

Redux具体使用方式见redux在项目中使用

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