But I dove in anyway. I managed to get through the basic Facebook tutorial and some others and got some React Native apps running, but it was quite a challenging experience and I didn't feel ...

The React project originated at Facebook; the open source project has a BSD license and a patent rights grant from Facebook. React is not an end-to-end JavaScript application framework.

Beyond the usual quick tips, let's look at both the business case and the technical side of keeping React bundles lean.