npm run dev 启动项目后报三个警告，百度查了一下也看不明白，求指点。

Question

warning in ./~/vue-style-loader/lib/addStylesClient.js

There are multiple modules with names that only differ in casing.
This can lead to unexpected behavior when compiling on a filesystem with other case-semantic.
Use equal casing. Compare these module identifiers:

• E:WebProjectUFAPPDYJJnode_modulesvue-style-loaderlibaddStylesClient.js

  Used by 4 module(s), i. e.
  E:\WebProject\UFAPP\DYJJ\node_modules\vue-style-loader\index.js!E:\WebProject\UFAPP\DYJJ\node_modules\css-loader\index.js?{"minimize":false,"sourceMap":false}!E:\WebProject\UFAPP\DYJJ\node_modules\vue-loader\lib\style-compiler\index.js?{"vue":true,"id":"data-v-f7c02f2c","scoped":false,"hasInlineConfig":false}!E:\WebProject\UFAPP\DYJJ\node_modules\vue-loader\lib\selector.js?type=styles&index=0!E:\WebProject\UFAPP\DYJJ\src\App.vue

• E:WebProjectufappDYJJnode_modulesvue-style-loaderlibaddStylesClient.js

  Used by 1 module(s), i. e.
  E:\WebProject\UFAPP\DYJJ\node_modules\vue-style-loader\index.js!E:\WebProject\UFAPP\DYJJ\node_modules\css-loader\index.js??ref--4-1!E:\WebProject\ufapp\DYJJ\node_modules\[e-mail]\normalize.css
  

warning in ./~/css-loader/lib/css-base.js

There are multiple modules with names that only differ in casing.
This can lead to unexpected behavior when compiling on a filesystem with other case-semantic.
Use equal casing. Compare these module identifiers:

• E:WebProjectUFAPPDYJJnode_modulescss-loaderlibcss-base.js

  Used by 4 module(s), i. e.
  E:\WebProject\UFAPP\DYJJ\node_modules\css-loader\index.js?{"minimize":false,"sourceMap":false}!E:\WebProject\UFAPP\DYJJ\node_modules\.2.0.0-rc.17@iview\dist\styles\iview.css

• E:WebProjectufappDYJJnode_modulescss-loaderlibcss-base.js

  Used by 1 module(s), i. e.
  E:\WebProject\ufapp\DYJJ\node_modules\css-loader\index.js?{"minimize":false,"sourceMap":false}!E:\WebProject\ufapp\DYJJ\node_modules\[e-mail]\normalize.css
  

warning in ./~/vue-style-loader/lib/listToStyles.js

There are multiple modules with names that only differ in casing.
This can lead to unexpected behavior when compiling on a filesystem with other case-semantic.
Use equal casing. Compare these module identifiers:

• E:WebProjectUFAPPDYJJnode_modulesvue-style-loaderliblistToStyles.js

  Used by 1 module(s), i. e.
  E:\WebProject\UFAPP\DYJJ\node_modules\vue-style-loader\lib\addStylesClient.js

• E:WebProjectufappDYJJnode_modulesvue-style-loaderliblistToStyles.js

  Used by 1 module(s), i. e.
  E:\WebProject\ufapp\DYJJ\node_modules\vue-style-loader\lib\addStylesClient.js

Answer 1

There are multiple modules with names that only differ in casing.
有多个模块同名仅大小写不同
This can lead to unexpected behavior when compiling on a filesystem with other case-semantic.
这可能导致在一些文件系统中产生不是预期的行为
Use equal casing.
使用唯一的写法

猜测是因为你的文件名和引用不一致，举个例，文件名是App.js，但是你引用的时候是写的app.js

Answer 2

已经是一致，但是不行，最后重启VS Code 就可以了

Answer 3

补充一种状况，如果引用的模块包含大写的，然后在多个地方引用，有的使用了大写，有的使用了小写，也会有类似的提示

Answer 4

其实Vue有类似的帖子 答案也就是不要用Gitbash 就是使用Window cmd就行了 帖子地址:RESOLVED There are multiple modules with names that only differ in casing

Answer 5

从npm下载的模块名字都是小写的，比如 vue,
正确的引入是import Vue from 'vue',如果你写成import Vue from 'Vue'就会提示警告。

Answer 6

打个比方，路径是E:\WebProject\ufapp\DYJJ\node_modules\vue-style-loader\lib\addStylesClient.js
文件目录改成小写即可解决。
E:\webproject\ufapp\dyjj\node_modules\vue-style-loader\lib\addStylesClient.js
因为linux严格区分大小写，而windows不区分。

Answer 7

建议你所有引用的模块使用绝对的路径

Answer 8

也补充一种情况。vuex报这个错有一个可能是：在组件内引入mapGetter但是没有使用的时候vuex.esm.js会报这个错误。

Answer 9

补充一种情况，

我用的是hbuilder自带的命令端运行，一直报错，大小路径没问题， 看到这帖后。
我关了hbuilder的命令终端， 改用系统自带的终端启动， 一切正常。 内心不禁一万个 wtf ...

Answer 10

我把node_modules删了，重新装了下包，结果就跑起来了！？？至今不晓得问题在哪儿

Answer 11

再补充一种情况，注意下项目所在文件夹的大小写