is a file similar to the build./webpack.base.conf.js in the directory generated by vue-cli. 
 I"d like to add sass-loader or something like that. 
 
 
 is a file similar to the build./webpack.base.conf.js in the directory generated by vue-cli. 
 I"d like to add sass-loader or something like that. 
execute npm run eject to see the relevant configuration
encapsulated in react-scripts. You need to execute yarn eject and pop up the configuration. This process is irreversible.
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