I just started reading the section on animation from the React Native Cookbook and plan to read the rest. So far so good.

Judging from the table of contents, it seems the book gets into more depth than what else is out there.

I can't answer your questions with certainty, but for those who can, could ES6 WeakMap address these two things?

WeakMap just allows you to tell the GC "don't hold on to this memory just because I'm using it as a key in this Map" -- it doesn't let you tell the GC what to actually do with the memory.

Care to share a source for that?

The cites would fill the whole thread. You can take his word for it.

Just read his blog.

Thank you, this is the kind of review I was looking for.