TypeError: index.tsx: (0 , _helperCreateClassFeaturesPlugin.enableFeature) is not a function

One of your dependencies, babel-preset-react-app, is importing the
"@babel/plugin-proposal-private-property-in-object" package without 

Failed to compile.

./src/index.tsx
TypeError: C:\dev\project\src\index.tsx: (0 , _helperCreateClassFeaturesPlugin.enableFeature) is not a function
 at transformFile.next (<anonymous>)
 at run.next (<anonymous>)
 at transform.next (<anonymous>)

Possible Solution #1

Remove node_modules folder and re-run npm install or yarn

https://github.com/babel/babel/issues/9120

That solution worked for me surprisingly