Where is React Fiber?

Question

React

Hey!
I can’t figure out if React Fiber is already working on version 16.4 by default (apparently there’s no time I can use the old syntactic constructions) or if I still need to import instead react-dom( react-fiber-domwell, or somehow differently)

Answer 1

Where is React Fiber?

Fiber architecture used since version 16.0
No.