vue2.7升级指南
vue2.7升级指南
之前的架子使用的是 panjiachen，使用的是 vue2.6.14，现在升级为 vue2.7.x
升级@vue/cli
vue upgrade
这里推荐使用 vue upgrade 命令自动升级
# 确保安装全局 @vue/cli
$ npm install -g @vue/cli
$ vue upgradeWARN There are uncommitted changes in the current repository, it's recommended to commit or stash them first.
? Still proceed? Yes
✔ Gathering package information...Name Installed Wanted Latest Command to upgrade@vue/cli-service 4.4.4 4.4.4 5.0.8 vue upgrade @vue/cli-service@vue/cli-plugin-babel 4.4.4 4.4.4 5.0.8 vue upgrade @vue/cli-plugin-babel@vue/cli-plugin-eslint 4.4.4 4.4.4 5.0.8 vue upgrade @vue/cli-plugin-eslint
? Continue to upgrade these plugins? Yes
Upgrading @vue/cli-service from 4.4.4 to 5.0.8
🚀 Running migrator of @vue/cli-service
✔ Successfully invoked migrator for plugin: @vue/cli-service
Upgrading @vue/cli-plugin-babel from 4.4.4 to 5.0.8
🚀 Running migrator of @vue/cli-plugin-babel
✔ Successfully invoked migrator for plugin: @vue/cli-plugin-babel
Upgrading @vue/cli-plugin-eslint from 4.4.4 to 5.0.8
🚀 Running migrator of @vue/cli-plugin-eslint
📦 Installing additional dependencies...
✔ Successfully invoked migrator for plugin: @vue/cli-plugin-eslinteslint ESLint upgraded from v5. to v7
这里发现有 3 个文件发生了修改，babel.config.js 实际上没有发生改变
vue upgrade 帮你做的事情
如果不这么做，需要进行如下操作，十分麻烦。如果依赖冲突，可以使用 npm i --legacy-peer-deps 进行安装
-
将
@vue/cli-xxx依赖升级至最新版本范围，这里我打算使用 vue-cli5- v4 升级至
~4.5.18 - v5 升级至
~5.0.6
$ npm i @vue/cli-plugin-babel@5 @vue/cli-plugin-eslint@5 @vue/cli-service@5 -D- "@vue/cli-plugin-babel": "4.4.4" - "@vue/cli-plugin-eslint": "4.4.4" - "@vue/cli-service": "4.4.4" + "@vue/cli-plugin-babel": "^5.0.8" + "@vue/cli-plugin-eslint": "^5.0.8" + "@vue/cli-service": "^5.0.8" - v4 升级至
-
升级
eslint，并安装@babel/core$ npm i eslint@7 eslint-plugin-vue@8 -D - "eslint": "6.7.2" - "eslint-plugin-vue": "6.2.2" + "eslint": "^7.32.0" + "eslint-plugin-vue": "^8.0.3" + "@babel/core": "^7.12.16"还需要升级
eslint对应的 parser，安装@babel/eslint-parse$ npm un babel-eslint $ npm i @babel/eslint-parser@7 @babel/core@7- "babel-eslint": "10.1.0" + "@babel/eslint-parser": "^7.12.16"之后修改
.eslintrc.js对应的 parsemodule.exports = {parserOptions: {parser: '@babel/eslint-parser'} }
解决@vue/cli报错
升级完 vue-cli 需要解决一下 vue-cli 语法升级报的错，需要修改 vue.config.js
-
之前使用 JSDoc 的形式可以改为
defineConfig帮手函数/*** @type {import('@vue/cli-service').ProjectOptions}*/ module.exports = { }// 需要改为如下内容 const { defineConfig } = require('@vue/cli-service') module.exports = defineConfig({ }) -
devtool更加严格，填写之前去 webpack 官网查一下：https://www.webpackjs.com/configuration/devtool/
# 报错信息 ValidationError: Invalid configuration object. Webpack has been initialized using a configuration object that does not match the API schema.- configuration.devtool should match pattern "^(inline-|hidden-|eval-)?(nosources-)?(cheap-(module-)?)?source-map$".BREAKING CHANGE since webpack 5: The devtool option is more strict. Please strictly follow the order of the keywords in the pattern比如：你写
cheap-module-eval-source-map是不合法的，需要改为eval-cheap-module-source-mapconfig.when(process.env.NODE_ENV === 'development', config => config.devtool('eval-cheap-module-source-map')) -
devServer 有很多配置发生了变化,比如：
{devServer: {hotOnly: trueoverlay: {warnings: false,errors: true},before: require('./mock/mock-server.js'),disableHostCheck: true} }// 需要改为 {devServer: {hot: "only",onBeforeSetupMiddleware: require('./mock/mock-server.js'),client: {overlay: {warnings: false,errors: true}},allowedHosts: "all"} }可以参考：https://github.com/webpack/webpack-dev-server/blob/master/migration-v4.md
比如这里报错 ‘disableHostCheck’ 是未知属性，就可以在这个文档中查一下，看看它改成了什么
# 报错信息 ValidationError: Invalid options object. Dev Server has been initialized using an optionsobject that does not match the API schema.- options has an unknown property 'disableHostCheck'. These properties are valid: object { allowedHosts?, bonjour?, client?, compress?, devMiddleware?, headers?, historyApiFallback?, host?, hot?, http2?, https?, ipc?, liveReload?, magicHtml?, onAfterSetupMiddleware?, onBeforeSetupMiddleware?, onListening?, open?, port?, proxy?, server?, setupExitSignals?, setupMiddlewares?, static?, watchFiles?, webSocketServer? } -
svg 报错问题
ERROR in ./src/pages/xx/icons/svg/wechat.svg Module build failed (from ./node_modules/svg-sprite-loader/lib/loader.js): Error: Cannot find module 'webpack/lib/RuleSet'升级
svg-sprite-loader即可$ npm i svg-sprite-loader@6 - "svg-sprite-loader": "4.1.3" + "svg-sprite-loader": "^6.0.11" -
path 模块找不到问题
Module not found: Error: Can't resolve 'path' in 'E:\xx\src\pages\xx\components\layout\components\Sidebar'BREAKING CHANGE: webpack < 5 used to include polyfills for node.js core modules by default.This is no longer the case. Verify if you need this module and configure a polyfill for it. If you want to include a polyfill, you need to:- add a fallback 'resolve.fallback: { "path": require.resolve("path-browserify") }'- install 'path-browserify' If you don't want to include a polyfill, you can use an empty module like this: resolve.fallback: { "path": false }webpack5 不再自动填充 Node 核心模块，如果你想使用的话需要从 npm 安装兼容的模块并自己包含它们。其它模块同理
https://webpack.js.org/configuration/resolve/#resolvefallback
$ npm i path-browserify -D + "path-browserify": "^1.0.1"引入即可。不过这里我尝试用链式调用的写法去写，没生效
{configureWebpack: {resolve: {fallback: {path: require.resolve('path-browserify')}}} } -
npm i 报错
可以使用
npm i --legacy-peer-deps解决npm ERR! Fix the upstream dependency conflict, or retry npm ERR! this command with --force, or --legacy-peer-deps npm ERR! to accept an incorrect (and potentially broken) dependency resolution.不过也要统一把对应插件的版本全部升级一遍。比如：
copy-webpack-plugin、html-webpack-plugin-
copy-webpack-plugin@5对应webpack@4里面的配置写法稍有变更，照着提示改下即可
-
html-webpack-plugin@3对应webpack@4 -
script-ext-html-webpack-plugin@2对应webpack@4内联 runtime 的代码就直接删掉了
$ npm i copy-webpack-plugin@11 -D - "copy-webpack-plugin": "5.0.5" + "copy-webpack-plugin": "^11.0.0"$ npm i html-webpack-plugin@5 - "html-webpack-plugin": "3.2.0" + "html-webpack-plugin": "^5.5.3"$ npm un script-ext-html-webpack-plugin - "script-ext-html-webpack-plugin": "2.1.3" -
-
css 全局变量
需要把
pretendData改为additionalData{css: {loaderOptions: {sass: {additionalData: '@import "~@/styles/variables.scss";'}}} } -
多入口 plugin 异常问题（没有使用多入口的可以跳过这个问题）
# 报错信息 Error: Cannot call .tap() on a plugin that has not yet been defined. Call plugin('preload')可以参考：https://cli.vuejs.org/zh/config/#pages 这里面的提示
如果你试图修改
html-webpack-plugin和preload-webpack-plugin插件的选项，可以使用vue inspect --plugins看看都有哪些 plugin$ npm i @vue/preload-webpack-plugin -D + "@vue/preload-webpack-plugin": "^2.0.0"之前直接使用 tap 连接即可，现在需要指定 plugin
Object.keys(pages).forEach(name => {config.plugin(`preload-${name}`).tap(() => [{rel: 'preload',fileBlacklist: [/\.map$/, /hot-update\.js$/, /runtime\..*\.js$/],include: 'initial'}])config.plugins.delete(`prefetch-${name}`) })// 需要改为如下内容 Object.keys(pages).forEach(name => {config.plugin(`preload-${name}`).use(require('@vue/preload-webpack-plugin'), [{rel: 'preload',fileBlacklist: [/\.map$/, /hot-update\.js$/, /runtime\..*\.js$/],include: 'initial'}])config.plugins.delete(`prefetch-${name}`) }) -
sass 警告问题
Deprecation Warning: Using / for division outside of calc() is deprecated and will be removed in Dart Sass 2.0.0. Recommendation: math.div($--tooltip-arrow-size, 2) or calc($--tooltip-arrow-size / 2) More info and automated migrator: https://sass-lang.com/d/slash-div╷ 89 │ margin-bottom: #{$--tooltip-arrow-size / 2};│ ^^^^^^^^^^^^^^^^^^^^^^^^^╵node_modules\element-ui\packages\theme-chalk\src\popper.scss 89:22 @contentnode_modules\element-ui\packages\theme-chalk\src\mixins\mixins.scss 74:5 b()node_modules\element-ui\packages\theme-chalk\src\popper.scss 4:1 @importnode_modules\element-ui\packages\theme-chalk\src\select-dropdown.scss 3:9 @importnode_modules\element-ui\packages\theme-chalk\src\select.scss 4:9 @importnode_modules\element-ui\packages\theme-chalk\src\pagination.scss 4:9 @importnode_modules\element-ui\packages\theme-chalk\src\index.scss 2:9 @importstdin 25:9 root stylesheet Warning: 33 repetitive deprecation warnings omitted.升级 sass 版本 和 sass-loader 版本，注意里面 deep 写法也需要改变，需要改为
::v-deep$ npm i sass sass-loader@12 - "sass": "1.26.2" - "sass-loader": "8.0.2" + "sass": "^1.44.0" + "sass-loader": "^12.6.0"这个一定要解决
warning in ./src/pages/xx/components/layout/components/Sidebar/index.vue?vue&type=script&lang=js& export 'default' (imported as 'variables') was not found in '@/styles/variables.scss' (module has no exports)因为页面里用到了
variables.scss导出的变量，新版如果没有进行处理会导致页面阻塞- 需要将
variables.scss名改为variables.module.scss
- 需要将
-
打包两次问题，Vue-cli5 以后你会发现会打包两次
vue2 项目升级到 vue3 之后 npm run build 执行两遍打包
- Building legacy bundle for production... - Building module bundle for production...主要是因为要兼容浏览器导致，可以在
.browserslistrc里配置not dead和not ie 11> 1% last 2 versions not dead not ie 11再进行打包就只会打包一次
- Building for production... -
eslint 可能会有一些警告或报错
- 可以先整体修复一遍，之后再解决一下没办法修复的
{"scripts": {"lint": "eslint . --ext .html,.vue,.js,.jsx --fix"} }
升级vue
-
升级
vue至 2.7。同时可以将vue-template-compiler从依赖中移除如果你在使用
@vue/test-utils，那么vue-template-compiler需要保留$ npm i vue@2.7 $ npm un vue-template-compiler- "vue": "2.6.10", - "vue-template-compiler": "^2.6.11", + "vue": "^2.7.14", -
这里我没有使用 vite，很多和 vite 相关的就没必要处理了
