使用webpack构建一个项目

目录结构

├── node_modules
├── static
├── src
| └── css
| └── js
| └── img
├── .babelrc
├── index.html
├── package.json
├── webpack.common.js
├── webpack.dev.js
├── webpack.prod.js

webpack.common.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const CopyWebpackPlugin = require('copy-webpack-plugin');
module.exports = {
    entry: {
        app: './src/js/index.js'
    },
    output: {
        filename: './js/[name].[hash].js',
        path: path.resolve(__dirname, 'dist')
    },
    module: {
        rules: [
            {
                test: /\.js$/,
                exclude: /node_modules/,
                loader: 'babel-loader'
            },
            {
                test: /\.scss$/,
                use: [
                    {
                        loader: MiniCssExtractPlugin.loader,
                        options: {
                            hmr: process.env.NODE_ENV === 'development',
                            publicPath:'../'
                        },
                    },
                    'css-loader',
                    'sass-loader'
                ]
            },
            {
                test: /\.(png|svg|jpg|gif)/,
                use: [
                    {
                        loader: "url-loader",
                        options: {
                            limit: 10000,
                            outputPath: 'images',
                            esModule: false
                        }
                    },
                ]
            },
            {
                test: /\.(htm|html)$/i,
                use: ['html-withimg-loader']
            }
        ]
    },
    plugins: [
        new HtmlWebpackPlugin({
            filename: "index.html",
            template: "./index.html",
        }),
        new MiniCssExtractPlugin({
            filename:"./css/[name].css",
        }),
        new CopyWebpackPlugin([
            {
                from: path.resolve(__dirname, './static'),
                to: 'static',
                ignore: ['.*']
            }
        ])
    ],
};

webpack.dev.js

const path = require('path');
const {merge} = require('webpack-merge');
const common = require('./webpack.common');
const DevConfig = {
    host: "localhost",
    port: "8080",
};
module.exports = merge(common, {
    devtool: 'inline-source-map',
    devServer: {
        host: DevConfig.host,
        port: DevConfig.port,
    }
});

webpack.prod.js

const {merge} = require('webpack-merge');
const common = require('./webpack.common.js');
const {CleanWebpackPlugin} = require('clean-webpack-plugin');
module.exports = merge(common, {
    plugins:[
        new CleanWebpackPlugin(),
    ]
});

.babelrc

{
  "presets": [
    [
      "@babel/preset-env",
      {
        "useBuiltIns": "usage",
        "targets": {
          "browsers": ["last 2 versions", "ie >= 10"]
        }
      }
    ]
  ]
}

package.json

{
  "name": "webpack",
  "version": "1.0.0",
  "description": "",
  "private": true,
  "scripts": {
    "build": "webpack --mode production --config webpack.prod.js",
    "start": "webpack-dev-server --mode development --open --config webpack.dev.js"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "@babel/core": "^7.11.6",
    "@babel/polyfill": "^7.11.5",
    "@babel/preset-env": "^7.11.5",
    "babel-loader": "^8.1.0",
    "clean-webpack-plugin": "^3.0.0",
    "copy-webpack-plugin": "^4.0.1",
    "css-loader": "^4.3.0",
    "file-loader": "^6.1.0",
    "html-webpack-plugin": "^4.5.0",
    "html-withimg-loader": "^0.1.16",
    "mini-css-extract-plugin": "^0.11.2",
    "node-sass": "^4.14.1",
    "sass-loader": "^10.0.2",
    "style-loader": "^1.2.1",
    "url-loader": "^4.1.0",
    "webpack": "^4.44.2",
    "webpack-cli": "^3.3.12",
    "webpack-dev-server": "^3.11.0",
    "webpack-merge": "^5.1.4"
  }
}