_moduleMap Babel option as require path about fbjs

[zpao]

It's possible but for the most part we've avoided using babelrc (as using the API directly has given more flexibility). What use case are you trying to solve?

[nickdima]

I was connecting the dots for React's build process and considering using a .babelrc and this seemed like the only blocking issue. Anyway, just exploring options...

[zpao]

We have a config that varies slightly when running tests (don't need all the transforms, for example the DEV one… though we're running it) so I've generally shied away from the rc and towards a shared base config that can be extended (though we don't actually do that in React at the moment).

I'm not against changing how things work, just want to make sure it's worth it and that it's something we can do across our projects.