undo npm run eject react code example

Example 1: undo npm run eject react

$ rm -r scripts/  //Remove Your scripts folder 
$ rm -r config/   //Remove Your config folder
$ rm -r node_modules//  //Remove Your node_modules folder

Example 2: undo npm run eject react

$ yarn run eject/ npm run eject 
? Are you sure you want to eject? This action is permanent. (Yes/No)Yes