问题：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。
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\.7.0.0@normalize.css\normalize.css
`

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\.7.0.0@normalize.css\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\.7.0.0@normalize.css\normalize.css
`

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\.7.0.0@normalize.css\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`

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`
```

回答：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

标签: vue.js, webpack