React Native Rearchitecture

React Native Rearchitecture with G2i Team - Software Engineering Daily

React Native allows developers to build native applications for iOS and Android using components written in the React JavaScript framework. These ReactJS components render to native application code by going over a JavaScript bridge, a message bus that communicates between JavaScript code and native iOS or Android runtimes.

To address the performance issues of React Native, the core team working on React Native at Facebook is rearchitecting the React Native runtime within a project called Fabric. Fabric consists of changes to the threading model, the data handling system, and the JavaScript bridge.

corymsmith/react-native-fabric: A React Native library for Fabric, Crashlytics and Answers @GitHub

How React Native constructs app layouts (and how Fabric is about to change it)

"RN Fabric allows the UI thread (where UI is drawn) to be in sync with the JS thread (where the UI is programmed)"

this new engine may be more similar to NativeScript, a similar open source tool:

How NativeScript Works - YouTube