typescript 热部署环境搭建

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typescript 热部署环境搭建大致流程

初始化 pacakge.json

npm init -y

安装依赖, 用到以下依赖

  • webpack webpack-cli webpack 以及 webpack 命令行工具
  • typescript typescript 命令行工具
  • webpack-dev-server webpack 热部署服务器
  • ts-loader 用于集成 webpack 和 typescript
  • html-webpack-plugin 用于打包 html
  • clean-webpack-plugin 用于删除上一次打包的文件
npm install --save-dev webpack webpack-cli typescript ts-loader webpack-dev-server html-webpack-plugin clean-webpack-plugin

添加 webpack 脚本

/package.json 

{
  "scripts": {
    "webpack-dev": "webpack --mode development",
    "webpack-pro": "webpack --mode production",
    "start": "webpack-dev-server --mode development"
  }
}

配置 webpack

/webpack.config.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');

module.exports = {
  devServer: {
    contentBase: path.join(__dirname, 'dist'),
    port: 8080,
  },
  entry: './src/index.ts',
  output: {
    filename: 'bundle.js',
    path: path.resolve(__dirname, 'dist'),
  },
  resolve: {
    extensions: ['.ts', '.js'],
  },
  module: {
    rules: [
      {
        test: /\.ts$/,
        use: 'ts-loader',
        exclude: /node_modules/,
      },
    ],
  },
  plugins: [
    // 将指定的 html 文件生成一个新的 html 文件
    new HtmlWebpackPlugin({
      template: 'src/index.html',
    }),
    // 每次打包先删除 output 目录下的所有文件
    new CleanWebpackPlugin(),
  ],
};

配置 typescript

/tsconfig.json

{
  "compilerOptions": {
    "outDir": "./dist/",
    "noImplicitAny": true,
    "module": "es6",
    "target": "es5",
    "jsx": "react",
    "allowJs": true
  }
}

编写测试文件

/src/index.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title>Title</title>
  </head>
  <body>
    hello
  </body>
</html>

/src/index.ts

interface Person {
  name: string;
  age: number;
}

const show = (person: Person) => console.log(person);

show({
  name: 'test',
  age: 123222333,
});

启动热部署服务器, 浏览器访问127.0.0.1:8080查看控制台打印

npm run start