115 lines
2.4 KiB
Markdown
115 lines
2.4 KiB
Markdown
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**初始化项目**
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```shell
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npm init -y
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```
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**安装webpack依赖（开发依赖）**
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```shell
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npm add -D webpack webpack-cli
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```
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**打包项目**
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```shell
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npx webpack
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```
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### entery 入口文件
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**入口文件是webpack的起点，通过入口文件来找到项目中的所有依赖模块。**
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```shell
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module.exports = {
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entry: './src/index.js', //默认值
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entry："./hello/hello.js", // 修改默认值
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entry: ["./src/a.js", "./src/b.js"], // 多个入口文件
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entry: {
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hello: "./src/a.js",
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b: "./src/b.js"
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} // 多个入口文件,使用对象形式
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}
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```
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### output 出口文件
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**出口文件是webpack打包后输出的文件。**
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```shell
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module.exports = {
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output: {
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filename: "bundle.js", // 默认值
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clean: true, // 清除打包文件所在目录
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path: `${__dirname}/dist/dist` // 指定打包后的文件路径
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}
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}
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```
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### loader
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**需要安装css-loader、style-loader**
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```shell
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module.exports = {
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module: {
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rules: [
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{
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test: /\.css$/,
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use: [
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'style-loader',
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'css-loader', // loader 执行顺序是从右到左
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]
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},
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{
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test: /\.(png|jpg|jpeg|gif)$/,
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type: 'asset/resource' // 图片资源类型
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}
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]
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}
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}
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```
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### babel
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**安装babel依赖（开发依赖）**
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```shell
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npm add -D @babel/core @babel/preset-env babel-loader
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```
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**配置babel**
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```shell
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module: {
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rules: [
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{
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test: /\.m?js$/,
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exclude: /(node_modules | bower_components)/,
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use: {
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loader: 'babel-loader',
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options: {
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presets: ['@babel/preset-env']
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}
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}
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}
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]
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}
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```
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**plugin 插件**
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例如：`html-webpack-plugin`
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```shell
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npm add -D html-webpack-plugin
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```
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```shell
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const HtmlWebpackPlugin = require('html-webpack-plugin')
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module: {
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plugins: [
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new HtmlWebpackPlugin({
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// template: './src/index.html'
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// filename: 'index.html',
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// template: './src/index.html'
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title: 'webpack-demo',
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})
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]
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}
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```
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**Webpack 开发服务器**
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```shell
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npm add -D webpack-dev-server
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```
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```shell
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module.exports = {
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devServer: {
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port: 7000,
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}
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}
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```
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