babel7.x和webpack4.x如何配置vue项目
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1.webpack 4.x 插件 extract-text-webpack-plugin
(node:2628) DeprecationWarning: Tapable.plugin is deprecated. Use new API on `.hooks` instead i 「wds」: Project is running at http://localhost:8300/ i 「wds」: webpack output is served from / i 「wds」: Content not from webpack is served from F:\private\plugin-insert\dist F:\private\plugin-insert\node_modules\webpack\lib\Chunk.js:838 throw new Error( ^ Error: Chunk.entrypoints: Use Chunks.groupsIterable and filter by instanceof Entrypoint instead at Chunk.get (F:\private\plugin-insert\node_modules\webpack\lib\Chunk.js:838:9) at F:\private\plugin-insert\node_modules\extract-text-webpack-plugin\dist\index.js:176:48 at Array.forEach () at F:\private\plugin-insert\node_modules\extract-text-webpack-plugin\dist\index.js:171:18 at AsyncSeriesHook.eval [as callAsync] (eval at create (F:\private\plugin-insert\node_modules\tapable\lib\HookCodeFactory.js:32:10), :7:1) at AsyncSeriesHook.lazyCompileHook (F:\private\plugin-insert\node_modules\tapable\lib\Hook.js:154:20) at Compilation.seal (F:\private\plugin-insert\node_modules\webpack\lib\Compilation.js:1231:27) at hooks.make.callAsync.err (F:\private\plugin-insert\node_modules\webpack\lib\Compiler.js:541:17) at _done (eval at create (F:\private\plugin-insert\node_modules\tapable\lib\HookCodeFactory.js:32:10), :9:1) at _err1 (eval at create (F:\private\plugin-insert\node_modules\tapable\lib\HookCodeFactory.js:32:10), :32:22)
extract-text-webpack-plugin 提取单独打包css文件时报错,官方安装部分的文档只写到了webpack 3,目前还没有webpack 4版本,可以使用 extract-text-webpack-plugin@next 解决,也可以使用 mini-css-extract-plugin 。
mini-css-extract-plugin 插件用法如下:
const MiniCssExtractPlugin = require("mini-css-extract-plugin") ; const config = module.exports = { plugins: [ new MiniCssExtractPlugin({ filename: "[name].[chunkhash:8].css", chunkFilename: "[id].css" }) ], module: { rules: [ { test: /\.css$/, use: [ MiniCssExtractPlugin.loader, "css-loader" ] } ] } } module.exports = config
2.babel 升级 6.x 到 7.x
(1) @babel/core
Module build failed (from ./node_modules/babel-loader/lib/index.js): Error: Cannot find module '@babel/core' babel-loader@8 requires Babel 7.x (the package '@babel/core'). If you'd like to use Babel 6.x ('babel-core'), you should install 'babel-loader@7'.
没找到 @babel/core ,这里把 babel-core 卸载,并安装 @babel/core 。
npm un babel-core npm i -D @babel/core
(2) @babel/preset-*
Module build failed (from ./node_modules/babel-loader/lib/index.js): Error: Plugin/Preset files are not allowed to export objects, only functions.
将 babel-preset-* 卸载,重新安装 @babel/preset-* ,并且修改 .babelrc 中的 presets
npm: - babel-preset-env + @babel/perset-env .babelrc: - "presets": ["env"] + "presets": ["@babel/preset-env"]
另,stage-*已弃用
(3) @babel/plugin-*
Module build failed (from ./node_modules/babel-loader/lib/index.js): TypeError: this.setDynamic is not a function at PluginPass.pre ...
这次是插件了,一样把babel-plugin-*卸载,重新安装@babel/plugin-*
然后修改.babelrc文件
具体的包名可以在 npm仓库 里找
(4) 最终文件
.babelrc { "presets": ["@babel/preset-env"], "plugins": [ "@babel/plugin-transform-runtime" ] } package.json "devDependencies": { "@babel/core": "^7.1.2", "@babel/plugin-transform-runtime": "^7.1.0", "@babel/preset-env": "^7.1.0", "babel-loader": "^8.0.4", ... }, "dependencies": { "@babel/runtime": "^7.1.2", "vue": "^2.5.17", "vue-loader": "^15.4.2", "vue-router": "^3.0.1", "vuex": "^3.0.1", "webpack": "^4.22.0", "webpack-cli": "^3.1.2", "webpack-dev-server": "^3.1.10", "webpack-merge": "^4.1.4" ... }
(5) 总结
babel 舍弃了以前的 babel-*-* 的命名方式,改成了 @babel/*-*
修改依赖和 .babelrc 文件后就能正常启动项目了。
3.vue-loader 15.x vueLoaderPlugin
vue-loader was used without the corresponding plugin. Make sure to include VueLoaderPlugin in your webpack config.
//两个方式都可以的,随便用一个 const VueLoaderPlugin = require('vue-loader/lib/plugin'); // 或者 const { VueLoaderPlugin } = require('vue-loader'); plugins: [ // make sure to include the plugin for the magic new VueLoaderPlugin() ]
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