webpack 编译 element-plus 报错

原创已于 2022-03-02 16:41:19 修改 · 7k 阅读

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于 2022-03-02 16:37:56 首次发布

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本文介绍了在新建Vue3项目时，遇到element-plus编译错误，主要涉及如何在webpack配置中添加对.mjs文件的支持，以解决模块解析'customParseFormat'未找到的问题。通过设置resolve.fullySpecified和extensions，确保webpack能正确编译项目。

新建vue3项目的过程中，使用webpack打包，编译element-plus时报错

ERROR in ./node_modules/element-plus/es/components/time-picker/src/time-picker.mjs 3:0-63
Module not found: Error: Can't resolve 'dayjs/plugin/customParseFormat' in '/Users/zjlab/Documents/workSpace/zj-wasc-jobManage-frontEnd/node_modules/element-plus/es/components/time-picker/src'
Did you mean 'customParseFormat.js'?
BREAKING CHANGE: The request 'dayjs/plugin/customParseFormat' failed to resolve only because it was resolved as fully specified
(probably because the origin is strict EcmaScript Module, e. g. a module with javascript mimetype, a '*.mjs' file, or a '*.js' file where the package.json contains '"type": "module"').
The extension in the request is mandatory for it to be fully specified.
Add the extension to the request.
 @ ./node_modules/element-plus/es/components/time-picker/index.mjs 1:0-47 8:20-30
 @ ./node_modules/element-plus/es/index.mjs 134:0-66 134:0-66
 @ ./src/main.js 3:0-38 8:8-19

问题的关键在这儿：

找到相关文件：time-picker.mjs

到这儿问题就明显了，webpack没有配置.mjs后缀文件的编译方式，

所以我们加了：

resolve: {
    fullySpecified: false,
},这个配置是让webpack不严格按照后缀去引入依赖，可以自己补充文件后缀

webpack的配置也需要加extensions: