1、npm WARN extract-text-webpack-plugin@4.0.0-beta.0 requires a peer of webpack@^3.0.0 || ^4.0.0 but none is installed. You must install peer dependencies yourself.

解决方法:

npm install webpack@^4.0.0

2、vue-loader@13.7.3 requires a peer of vue-template-compiler@^2.0.0 but none is installed. You must install peer dependencies yourself.

解决方法:

npm i vue-template-compiler@^2.0.0 


3、npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.13 (node_modules\watchpack-chokidar2\node_modules\fsevents):

原因:
fsevents不在package.json里,但是仍然安装了,是因为你的系统是Windows系统,fsevents是苹果系统的可选依赖,你的项目有可能是团队项目,别人在他的mac上安装了fsevents相关依赖库,所以到这边你也就安装到你的windows上边了。你可以检查你的package.json 文件中是不是有fsevents相关依赖,删除即好!
如果没有,其他的npm包也会有依赖fsevents的!!!
这是warning错误,是因为mac下需要 fsevents,这里是在windows环境,所以可以忽略这个警告,对你没什么影响的。


4、npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.13: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

原因: fsevent是mac osx系统的,在win或者Linux下使用了 所以会有警告,忽略就好了,意思就是你已经安装成功了,之后npm run dev即可

5、npm WARN vue-loader@15.2.4 requires a peer of css-loader@* but none is installed. You must install peer dependencies yourself.
npm WARN vue-loader@15.2.4 requires a peer of vue-template-compiler@^2.0.0 but none is installed. You must install peer dependencies yourself.

需要安装css-loader 和vue-template-compiler。

npm i css-loader vue-template-compiler

 

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