React + Typescript + Webpack 开发环境配置

BlancaCrisp 5年前
   <p>Typescript 给 React 带来很多好处:在组件头部以 interface 方式定义 props 、 state ,在编译中发现问题,使用VSCode等工具实现实时类型校验等,且配置也是非常简单,步骤如下。</p>    <h2><strong>文件目录</strong></h2>    <pre>  <code class="language-javascript">.  ├── build # 前端配置文件  │   ├── index.html  │   ├── webpack.config.js  ├── app # 前端目录  ├── .gitignore  ├── package.json  ├── tsconfig.json  └── tslint.json</code></pre>    <h2><strong>配置流程</strong></h2>    <h3><strong>创建项目</strong></h3>    <pre>  <code class="language-javascript">mkdir my-project && cd my-project  npm init</code></pre>    <h3><strong>安装依赖</strong></h3>    <pre>  <code class="language-javascript">npm i -g webpack webpack-dev-server  npm i --save-dev react react-dom @types/react @types/react-dom  npm i --save ts-loader source-map-loader  npm link --save webpack webpack-dev-server</code></pre>    <h3><strong>配置 webpack</strong></h3>    <pre>  <code class="language-javascript">/* build/webpack.config.js */  const config = {    entry: './Yoda/index.tsx',    output: {      filename: 'app.bundle.js',      path: './public',      publicPath: '/assets'    },    devtool: 'source-map',    resolve: {      extensions: ['', '.webpack.js', '.web.js', '.ts', '.tsx', '.js']    },    module: {      loaders: [        {          test: /\.tsx?$/,          loader: 'ts-loader'        }      ],      preLoaders: [        {          test: /\.js$/,          loader: 'source-map-loader'        }      ]    },    devtool: 'eval'  }    module.exports = config</code></pre>    <h3><strong>配置 tsconfig</strong></h3>    <pre>  <code class="language-javascript">/* tsconfig.json */</code></pre>    <pre>  <code class="language-javascript">{      "compilerOptions": {          "outDir": "./public/",          "sourceMap": true,          "noImplicitAny": true,          "module": "commonjs",          "target": "es5",          "jsx": "react"      },      "files": [          "./app/index.tsx"      ]  }</code></pre>    <p>至此,基本配置已经完成,后面创建好一个入口页面和 entry 文件就可以跑起来了:</p>    <pre>  <code class="language-javascript">/* build/index.html */</code></pre>    <pre>  <code class="language-javascript"><!doctype html>  <html lang="zh-cn">    <head>      <meta charset="utf-8">      <meta name="viewport" content="width=device-width,initial-scale=1.0,user-scalable=no">      <title>Hello world</title>      <script src="http://localhost:8080/webpack-dev-server.js"></script>    </head>    <body>      <div id="app"></div>      <script src="assets/app.bundle.js"></script>    </body>  </html></code></pre>    <pre>  <code class="language-javascript">/* app/index.tsx */  import * as React from 'react'  import { render } from 'react-dom'    interface IAppProps {}  interface IAppState {}    class App extends React.Component<IAppProps, IAppState> {    public render(): JSX.Element {      return (        <div>          Hello world        </div>      )    }  }    render(<App />, document.getElementById('app'))</code></pre>    <h3><strong>启动项目</strong></h3>    <pre>  <code class="language-javascript">webpack-dev-server --inline --config build/webpack.config.dev.js --content-base build</code></pre>    <p>出来吧神龙</p>    <h2><strong>简单的说明</strong></h2>    <h3><strong>Webpack 配置</strong></h3>    <p>Webpack配置其实是一件很简单的事情,这也是他具备强大竞争力的重要因素。</p>    <p>从配置文件中可以看出,里面无非就是 entry 、 output 和 loader ,如果需要编译CSS,在 loader 里面加一个即可:</p>    <pre>  <code class="language-javascript">npm i --save-dev style-loader css-loader</code></pre>    <pre>  <code class="language-javascript">/* build/webpack.config.js */  const config = {    // ...    module: {      loaders: [        {          test: /\.css/,          loader: 'style-loader!css-loader'        }      ],      // ...    },    // ...  }</code></pre>    <h3><strong>项目启动</strong></h3>    <p>项目启动的命令过长,放进 package.json 的 scripts 就好了:</p>    <pre>  <code class="language-javascript">/* package.json */</code></pre>    <pre>  <code class="language-javascript">{    "scripts": {      "dev": "webpack-dev-server --inline --config build/webpack.config.dev.js --content-base build",    },  }</code></pre>    <p>再执行以下命令试试:</p>    <pre>  <code class="language-javascript">npm run dev</code></pre>    <h3><strong>tslint</strong></h3>    <p>在开发中如果有个约束代码的工具能够让代码更加优雅,以前用的是 eslint ,如果用 .tsx 就不能生效了,这里推荐使用 tslint :</p>    <pre>  <code class="language-javascript">npm i -g tslint  cd my-project  tslint init</code></pre>    <p>这样会在项目文件中创建一个现成的 tslint 配置文件: tslint.json ,个性化方案可以自行设置。</p>    <h2><strong>参考</strong></h2>    <p><a href="/misc/goto?guid=4958999009084926641" rel="nofollow,noindex">webpack 新官网</a> <a href="/misc/goto?guid=4959676961343349964" rel="nofollow,noindex">webpack dev server</a> <a href="/misc/goto?guid=4959727194387178717" rel="nofollow,noindex">tsconfig.json 配置文档</a> <a href="/misc/goto?guid=4959664944010097738" rel="nofollow,noindex">style-loader</a> <a href="/misc/goto?guid=4959727194497507312" rel="nofollow,noindex">tslint</a></p>    <p> </p>    <p>来自:https://segmentfault.com/a/1190000007631069</p>    <p> </p>