初始化我们使用npm init命令初始化一个package.json文件。npm init安装webpacknpm i webpack webpack-cli webpack-dev-server –save-dev安装vuenpm i vue –save创建相应文件createVue |–dist |–webpack.config.js |–src |–main.js |–index.html===index.html<!DOCTYPE html><html lang=“en”><head> <meta charset=“UTF-8”> <title>webpack4-vue-demo</title></head><body> <div id=“app”></div> <script src="./dist/bundle.js"></script></body></html>====main.jsimport Vue from ‘vue’;new Vue({ el: ‘#app’, data: { message: “hello” }}); ===webpack.config.jsconst webpack = require(‘webpack’);module.exports = { entry: ‘./src/main.js’, //入口 output:{ path: path.resolve(__dirname, ‘dist’), filename: “bundle.js” }, resolve: { extensions: [’.js’, ‘.vue’, ‘.json’], alias: { ‘@’: resolve(‘src’) } }};打包webpack打包过后，dist文件夹出现打包后的文件，再通过IDEA打开index.html，就可以看到内容。打开index.html后，控制台报错[Vue warn]: You are using the runtime-only build of Vue where the template compiler is not available. Either pre-compile the templates into render functions, or use the compiler-included build.解决方法： resolve: { alias: { ‘vue$’: ‘vue/dist/vue.esm.js’ } }改造成vue文件createVue |–dist |–webpack.config.js |–src |–main.js |–App.vue |–index.html====main.jsimport Vue from ‘vue’;import App from ‘./APP’;new Vue({ el: ‘#app’, render:h=>h(App)}); ====App.vue<template> <div id=“app”> hello world </div></template><script>export default { name: ‘app’}</script> 如果直接运行，发现报错。解决方案：npm install -D vue-loader vue-template-compiler请在webpack.config.js添加如下：const VueLoaderPlugin = require(‘vue-loader/lib/plugin’)module.exports = { module: { rules: [ // … 其它规则 { test: /.vue$/, loader: ‘vue-loader’ } ] }, plugins: [ // 请确保引入这个插件！ new VueLoaderPlugin() ]}改造webpack.config.jsnpm i webpack-merge –save-dev新建两个文件，webpack.prod.js和webpack.dev.js。createVue |–dist |–webpack.config.js |–webpack.dev.js |–webpack.prod.js |–src |–main.js |–App.vue |–index.html======= webpack.dev.jsconst merge = require(‘webpack-merge’);const common = require(’./webpack.config.js’);const path = require(‘path’);module.exports = merge(common, { devtool: ‘inline-source-map’, devServer: { // 开发服务器 contentBase: ‘./dist’ //告诉开发服务器(dev server)，在哪里查找文件 }, output: { // 输出 filename: ‘js/[name].[hash].js’, // 每次保存 hash 都变化 path: path.resolve(__dirname, ‘./dist’) }, module: {}, mode: ‘development’,});======= webpack.prod.jsconst path = require(‘path’);// 合并配置文件const merge = require(‘webpack-merge’);const common = require(’./webpack.config.js’);module.exports = merge(common, { module: {}, plugins: [], mode: ‘production’, output: { filename: ‘js/[name].[contenthash].js’, //contenthash 若文件内容无变化，则contenthash 名称不变 path: path.resolve(__dirname, ‘./dist’) },});接下来，在package.json的scripts 配置中添加运行脚本:“scripts”: { “start”: “webpack-dev-server –open –config webpack.dev.js”, “build”: “webpack –config webpack.prod.js”},当我们打包的时候webpack4会报错The ‘mode’ option has not been set, webpack will fallback to ‘production’ for this value. Set ‘mode’ option to ‘development’ or ‘production’ to enable defaults for each environment.You can also set it to ’none’ to disable any default behavior. Learn more: https://webpack.js.org/concepts/mode/解决方法：“scripts”: { “start”: “webpack-dev-server –mode=‘development’ –open –config webpack.dev.js”, “build”: “webpack –mode=‘production’ –config webpack.prod.js”},热替换在webpack.dev.js 中增加如下配置：devServer: { hot: true},plugins: [ new webpack.NamedModulesPlugin(), new webpack.HotModuleReplacementPlugin()],压缩jsnpm i -D uglifyjs-webpack-plugin请在webpack.prod.js添加如下配置：const UglifyJsPlugin = require(‘uglifyjs-webpack-plugin’)module.exports = { plugins: [ new UglifyJsPlugin() ]}清理 /dist 文件夹npm install clean-webpack-plugin –save-dev请在webpack.prod.js添加如下配置：const UglifyJsPlugin = require(‘uglifyjs-webpack-plugin’)module.exports = { plugins: [ new CleanWebpackPlugin([‘dist’]) ]}引入babel复制代码由于在使用vue时会用到很多es6的语法，但是现在很多浏览器对es6的支持不是很好，所以在编译时需要将这些语法转换es5的语法，此时我们使用babel来进行编译。npm install –save-dev babel-core babel-loader babel-preset-env babel-plugin-transform-runtimebabel-loader 用于让 webpack 知道如何运行 babelbabel-core 可以看做编译器，这个库知道如何解析代码babel-preset-env 这个库可以根据环境的不同转换代码请在webpack.config.js添加如下配置：module:{ rules:[ { test: /.js$/, loader:“babel-loader”, exclude: /node_modules/ } ]}目录下创建.babelrc文件用于配置 babel ：{ “presets”: [“env”], “plugins”: ["@babel/plugin-transform-runtime"]}HtmlWebpackPlugin 插件将打包后的文件自动注入index.html。npm install –save-dev html-webpack-plugin将index.html页面中的"<script src="./dist/bundle.js"></script>" 删除。在webpack.config.js 中增加如下配置：const HtmlWebpackPlugin = require(‘html-webpack-plugin’)…plugins:[ new HtmlWebpackPlugin()]运行"npm build", 生成的index.html中自动注入打包好的js文件。引入vue-routernpm install –save vue-router添加 src/router/routes.js 文件，用于配置项目路由：import Vue from ‘vue’;import Router from ‘vue-router’;Vue.use(Router);export default new Router({ routes: [ { path: ‘’, component: () => import (’@/views/Home’)} ]});新创建文件如下：createVue |–dist |–webpack.config.js |–webpack.dev.js |–webpack.prod.js |–src |–views |–Home.vue |–router |–routes.js |–main.js |–App.vue |–index.html运行npm start，发现报错了！！！注意如果您使用的是 Babel，你将需要添加 syntax-dynamic-import 插件，才能使 Babel 可以正确地解析语法。找了好久，才发现，原来还需要装这个插件~~~哭.jpgnpm install –save-dev @babel/plugin-syntax-dynamic-import// .babelrc{ “plugins”: ["@babel/plugin-syntax-dynamic-import"]}到这儿，完成了基本的框架，剩下的可以看自己的项目需要进行选择了。