babel安装问题，Cannot find module '@babel/core' babel-loader@8 requires Babel 7.x (the package '@babel/c

Cannot find module '@babel/core' babel-loader@8 requires Babel 7.x (the package '@babel/core'). If you'd like to use Babel 6.x ('babel-core'), you should install 'babel-loader@7'.ou should install 'babel-loader@7'.

原因是：
babel-loader和babel-core版本不对应所产生的，
babel-loader 8.x对应babel-core 7.x
babel-loader 7.x对应babel-core 6.x

也就是说，看你的版本，然后执行

npm i --save-dev babel-loader@7.1.5

    
你需要自己看一下babel-core的版本，去安装对应版本的babel-loader。

摘自：https://www.cnblogs.com/hoyong/articles/11057993.html