如题:这个问题困扰了我半天,网上搜索各种解决方法,都没能解决,最后仔细读一遍原因才发现问题很简单,就是版本不一致
为啥不一样,哪里有两个相同的依赖呢,请看下文:
There might be a problem with the project dependency tree. It is likely not a bug in Create React App, but something you need to fix locally. The react-scripts package provided by Create React App requires a dependency: "webpack": "4.19.1" Don't try to install it manually: your package manager does it automatically. However, a different version of webpack was detected higher up in the tree: E:\company_work\wbwork\zabbix2\node_modules\webpack (version: 3.10.0) Manually installing incompatible versions is known to cause hard-to-debug issues.
报错如上所示,不一定是webpack,还是其他依赖文件版本冲突,如babel-eslint, babel-loader, webpack-dev-server等等,
这个版本冲突是因为react-scripts中重新依赖了一套相同的,坑爹呀,react自行依赖一套了,结果版本不一致导致的。
怎样看你的项目中是否有相同的依赖
npm ls webpack
如上指令,webpack 可以换成任何同样报错的依赖名称即可查询
结果:
$ npm ls webpack adminstock@0.1.0 E:\GitLab\adminstock\web +-- react-scripts@3.4.1 | `-- webpack@4.42.0 `-- webpack@4.41.0
看到了吧,react-scripts 还有相同的一套webapck,但是版本不一样。
要怎么改,其实很简单,
在package.json中,找到react-scirpts,将他的版本号前面的 ^ 这个符号删掉,然后重新npm install 一下就可以了
^ 符号标识最新版本,不是指你当前写的版本,大坑呀。
不信的话,你npm install 完,再运行一下
npm ls webpack 检查版本是不是一样
$ npm ls webpack
adminstock@0.1.0 E:\GitLab\adminstock\web
+-- react-scripts@3.2.0
| `-- webpack@4.41.0 deduped
`-- webpack@4.41.0
完美解决, 亲测