reactjs Cannot read property 'keys' of undefined

Question

I am learning reactjs through a tutorial and ran into this error. That says \"Cannot read property \'keys\' of undefined\" My code is very minimal so I assume that it has to

Answer 1

This is the version of babel-core which isn't giving me the error as shown below:

If you want to use the latest version, You can use the latest standalone version. (as per 22-Nov-2018)

But this gives the following warning :

"You are using the in-browser Babel transformer. Be sure to precompile your scripts for production - https://babeljs.io/docs/setup/"