第一步、输入命令 vue init webpack demo2 （demo2表示项目名称），回车后等待项目完成创建；
第二步、打开package.json，升级以下依赖（建议升级一项依赖后运行一下项目）
- webpack系列
webpack 3.6.0 -> 4.46.0 webpack-cli -> 3.3.12 webpack-dev-server 2.9.1 -> 3.11.3 webpack-marge 4.1.0 -> 4.2.2
卸载：npm uninstal webpack webpack-cli webpack-dev-server webpack-merge
安装：npm i -D webpack@4.30.0 webpack-cli@3.3.12 webpack-dev-server@3.11.3 webpack-merge@4.2.2
- babel系列
使用命令npx babel-upgrade --write升级（babel7系列） - eslint系列
eslint 4.15.0 -> 7.32.0 eslint-config-standard 10.2.1 -> 16.0.3 eslint-friendly-formatter 3.0.0 -> 4.0.1 eslint-plugin-import 2.7.0 -> 2.26.0 eslint-plugin-node 5.2.0 -> 11.1.0 eslint-plugin-promise 3.4.0 -> 5.2.0 eslint-plugin-standard 3.0.1 -> 删除 eslint-plugin-vue 4.0.0 -> 9.7.0
卸载：npm uninstall eslint eslint-config-standard eslint-friendly-formatter eslint-plugin-import eslint-plugin-node eslint-plugin-promise eslint-plugin-standard eslint-plugin-vue
安装：npm install -D eslint@7.32.0 eslint-config-standard@16.0.3 eslint-friendly-formatter@4.0.1 eslint-plugin-import@2.26.0 eslint-plugin-node@11.1.0 eslint-plugin-promise@5.2.0 eslint-plugin-vue@9.7.0
- webpack插件系列
clean-webpack-plugin -> 3.0.0 copy-webpack-plugin 4.0.1 -> 6.4.1 extract-text-webpack-plugin -> mini-css-extract-plugin 0.11.0 friendly-errors-webpack-plugin 1.6.1 -> 1.7.0 html-webpack-plugin 2.30.1 -> 4.5.0 optimize-css-assets-webpack-plugin 3.2.0 -> 5.0.8 uglifyjs-webpack-plugin -> terser-webpack-plugin 4.2.3 webpack-bundle-analyzer 2.9.0 -> 4.5.0
卸载：npm uninstall copy-webpack-plugin extract-text-webpack-plugin friendly-errors-webpack-plugin html-webpack-plugin optimize-css-assets-webpack-plugin uglifyjs-webpack-plugin webpack-bundle-analyzer
安装：npm install -D clean-webpack-plugin@3.0.0 copy-webpack-plugin@5.1.2 mini-css-extract-plugin@0.11.0 friendly-errors-webpack-plugin@1.7.0 html-webpack-plugin@4.5.0 optimize-css-assets-webpack-plugin@5.0.8 terser-webpack-plugin@4.2.3 webpack-bundle-analyzer@4.5.0
- loader系列
babel-loader 8.0.0 -> 8.3.0 css-loader 0.28.0 -> 3.6.0 eslint-loader -> eslint-webpack-plugin 2.7.0 file-loader 1.1.4 -> 6.2.0 postcss-loader 2.0.8 -> 4.3.0 style-loader -> 2.0.0 url-loader 0.5.8 -> 4.1.1 vue-loader 13.3.0 -> 15.7.0
卸载：npm uninstall babel-loader css-loader eslint-loader file-loader postcss-loader url-loader vue-loader
安装：npm install -D babel-loader@8.3.0 css-loader@3.6.0 eslint-webpack-plugin@2.7.0 file-loader@6.2.0 postcss-loader@4.3.0 style-loader@2.0.0 url-loader@4.1.1 vue-loader@15.7.0
- vue系列（根据实际需要升级）
vue 2.5.2 -> 2.7.8 vue-template-compiler 2.5.2 -> 2.7.8 (注：和vue版本必须一致) vue-router 3.0.1 -> 3.5.1 vuex 3.6.2
卸载：npm uninstall vue vue-template-compiler vue-router vuex
安装：
npm install -D vue-template-compiler@2.7.8
npm install vue@2.7.8 vue-router@3.5.1 vuex@3.6.2
- 其它依赖
core-js -> 3.26.1 less -> 4.1.3 less-loader -> 7.3.0 sass -> 1.56.1 sass-loader -> 10.4.1 node-sass -> 4.14.1
安装：npm install -D core-js@3.26.1 less@4.1.3 less-loader@7.3.0 sass@1.56.1 sass-loader@10.4.1 node-sass@4.14.1
第三步、配置webpack
1、修改build/utils.js文件
1.1 删掉ExtractTextPlugin依赖导入
1.2 添加依赖
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
1.3 将
return ExtractTextPlugin.extract({
use: loaders,
fallback: 'vue-style-loader'
})
替换成
return [MiniCssExtractPlugin.loader].concat(loaders)
2、修改build/webpack.base.conf.js文件
2.1 添加依赖
const VueLoaderPlugin = require('vue-loader/lib/plugin')
const ESLintPlugin = require('eslint-webpack-plugin')
2.2 添加plugins代码段
plugins: [
new VueLoaderPlugin(),
new ESLintPlugin({
fix: true, // 启用ESLint自动修复功能
extensions: ['js', 'jsx'],
context: resolve('src'), // 文件根目录
exclude: ['/node_modules/'], // 指定要排除的文件/目录
cache: true //缓存
}),
],
2.3 删除代码段1
const createLintingRule = () => ({
test: /\.(js|vue)$/,
loader: 'eslint-loader',
enforce: 'pre',
include: [resolve('src'), resolve('test')],
options: {
formatter: require('eslint-friendly-formatter'),
emitWarning: !config.dev.showEslintErrorsInOverlay
}
})
2.4 删除代码段2
...(config.dev.useEslint ? [createLintingRule()] : []),
3、修改build/webpack.dev.conf.js文件
3.1 删除代码
new webpack.NamedModulesPlugin(), // HMR shows correct file names in console on update.
new webpack.NoEmitOnErrorsPlugin(),
3.2 修改copy-webpack-plugin代码
new CopyWebpackPlugin({
patterns: [
{
from: path.resolve(__dirname, '../static'),
to: config.dev.assetsSubDirectory,
},
// 多个资源文件夹可以以对象形式添加
// {
// from: path.resolve(__dirname, '../public'),
// to: './',
// }
]
}),
4、修改build/webpack.prod.conf.js文件
4.1 修改全部依赖
const path = require('path')
const utils = require('./utils')
const webpack = require('webpack')
const config = require('../config')
const merge = require('webpack-merge')
const baseWebpackConfig = require('./webpack.base.conf')
const CopyWebpackPlugin = require('copy-webpack-plugin')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
const OptimizeCssAssetsPlugin = require('optimize-css-assets-webpack-plugin')
const TerserPlugin = require('terser-webpack-plugin')
const { CleanWebpackPlugin } = require('clean-webpack-plugin')
const BundleAnalyzerPlugin = require("webpack-bundle-analyzer").BundleAnalyzerPlugin;
4.2 修改Plugins代码部分
删除所有new webpack.optimize.CommonsChunkPlugin部分
删除new webpack.optimize.ModuleConcatenationPlugin(),
添加clean-webpack-plugin、mini-css-extract-plugin、bundleAnalyzerPlugin插件
修改后plugins代码段：
plugins: [
// http://vuejs.github.io/vue-loader/en/workflow/production.html
new webpack.DefinePlugin({
'process.env': env
}),
// 打包时首先将dist文件夹内容清空
new CleanWebpackPlugin(),
// extract css into its own file
new MiniCssExtractPlugin({
filename: utils.assetsPath('css/[name].[contenthash].css'),
}),
// generate dist index.html with correct asset hash for caching.
// you can customize output by editing /index.html
// see https://github.com/ampedandwired/html-webpack-plugin
new HtmlWebpackPlugin({
filename: process.env.NODE_ENV === 'testing'
? 'index.html'
: config.build.index,
template: 'index.html',
// favicon: path.resolve(__dirname, '../public/favicon.ico'),
inject: true,
minify: {
removeComments: true,
collapseWhitespace: true,
removeAttributeQuotes: true
// more options:
// https://github.com/kangax/html-minifier#options-quick-reference
},
// necessary to consistently work with multiple chunks via CommonsChunkPlugin
chunksSortMode: 'none', // 如果使用webpack4将该配置项设置为'none'
}),
// keep module.id stable when vendor modules does not change
new webpack.HashedModuleIdsPlugin(),
// enable scope hoisting
// new webpack.optimize.ModuleConcatenationPlugin(),
// copy custom static assets
new CopyWebpackPlugin({
patterns: [
{
from: path.resolve(__dirname, '../static'),
to: config.build.assetsSubDirectory,
},
// 多个资源文件夹可以以对象形式添加
// {
// from: path.resolve(__dirname, '../public'),
// to: './',
// }
]
}),
// webpack-bundle-analyzer
// 可以是`server`，`static`或`disabled`。
// 在`server`模式下，分析器将启动HTTP服务器来显示软件包报告。
// 在“静态”模式下，会生成带有报告的单个HTML文件。
new BundleAnalyzerPlugin({
analyzerMode: "static",
analyzerHost: "127.0.0.1",
analyzerPort: 8882, //注意是否有端口冲突
reportFilename: "report.html",
defaultSizes: "parsed",
openAnalyzer: true,
generateStatsFile: false,
statsFilename: "stats.json",
statsOptions: null,
logLevel: "info",
}),
],
4.3 webpack 4 将CommonsChunkPlugin部分内容放到optimization中了
添加optimization代码段，与plugins同级：
optimization: {
runtimeChunk: {
name: 'runtime'
},
minimizer: [
new TerserPlugin({
test: /\.js(\?.*)?$/i,
exclude: /\.min\.js$/i, // 过滤掉以".min.js"结尾的文件，
parallel: true,
sourceMap: config.build.productionSourceMap,
extractComments: false, // 是否将注释剥离到单独的文件中
terserOptions: {
compress: {
unused: true,
drop_debugger: true, // 移除所有debugger
drop_console: true, // 移除所有console
pure_funcs: [ // 移除指定的指令，如console, alert等
'console.log',
'console.error',
'console.dir',
],
},
format: {
comments: false, // 删除注释
},
}
}),
new OptimizeCssAssetsPlugin({
cssProcessorOptions: config.build.productionSourceMap
? { safe: true, map: { inline: false } }
: { safe: true, }
}),
],
splitChunks: {
chunks: 'async',
minSize: 30000,
minChunks: 1,
maxSize: 0,
maxAsyncRequests: 5,
maxInitialRequests: 3,
automaticNameDelimiter: '~',
name: false,
cacheGroups: {
vendor: {
test: /node_modules\/(.*)\.js/,
name: 'vendor',
chunks: 'initial',
priority: -10,
reuseExistingChunk: false,
},
styles: {
test: /\.(less|css|s(a)css)$/,
name: 'styles',
chunks: 'all',
minChunks: 1,
reuseExistingChunk: true,
enforce: true
},
default: {
minChunks: 2,
priority: -20,
reuseExistingChunk: true
}
}
}
5、修改config/index.js文件
5.1 修改build下的assetsPublicPath
assetsPublicPath: '/', ==> assetsPublicPath: './',
6、修改根目录下的.babelrc文件
6.1 修改corejs版本为3
"corejs": 2 ==> "corejs": 3
7、尝试运行项目：npm run start
8、尝试打包项目：npm run build
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