webpack基础配置

const path = require("path");
const webpack = require('webpack');
const HtmlWebpackPlugin = require("html-webpack-plugin");
module.exports = {
    entry: path.join(__dirname, "./src/assets/js/index.js"),
    output: {
        path: path.resolve(__dirname, "dist"),
        filename: "bundle.js",
    },
    devServer: {
        host: "127.0.0.1",
        port: "1234",
        hot: true, // 表示启用热模块替换，不用刷新整个页面
        open: true, //自动打开浏览器
    },
    module: {   // 模块
        rules: [    // 规则
            {
                test: /.css$/,
                use: [
                    'style-loader',
                    'css-loader']
            },
            {   // sass-loader
                test: /.scss$/,
                use: [
                    'sass-loader',
                ]
            }
        ]
    },
    plugins: [
        new HtmlWebpackPlugin({
            hash: true,
            title: 'Webpack Example App',
            header: 'Webpack Example Title',
            metaDesc: 'Webpack Example Description',
            template: './src/index.html',
            filename: 'index.html',
            inject: 'body'
        }),
        new webpack.HotModuleReplacementPlugin()
    ],
};

• package.json

{
  "name": "threejs",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "dev": "webpack-dev-server --mode development",
    "build": "webpack --mode production"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "html-webpack-plugin": "^5.6.0",
    "three": "^0.148.0"
  },
  "devDependencies": {
    "css-loader": "^7.1.2",
    "node-sass": "^9.0.0",
    "sass": "^1.78.0",
    "sass-loader": "^16.0.1",
    "style-loader": "^4.0.0",
    "webpack": "^5.36.2",
    "webpack-cli": "^3.3.12",
    "webpack-dev-server": "^3.11.2"
  }
}