Time to Interaction (TTI) is a key aspect of how a user perceives the performance of an app. The TTI of our iOS app is noticeably longer than other competing messaging apps written in native code. Since React Native loads and parses all the Javascript code before execution, you get startup delay ...

Facebook is solving this problem by re-architecting the threading model :

It will be possible to call synchronously into JavaScript on any thread for high-priority updates.

Afte...

A few days ago, we were able to quickly deploy a post-release fix for cameras and skip the approval process. We can’t even begin to count how many OTAs we’ve shipped. Being allowed more room for mistakes, engineers can ship often with confidence and avoid coordination, which unblocks everyone.

Immature long lists have been a well known issue since day one, using for chat view. Alternatively, they use UITableView for smooth scrolling performance and dynamic cell heights.

This is the only view which was implemented on native, which means the hundreds of other of React ...

Used storybook to quickly render "dumb" components that don't manage any state internally with mock props. By leveraging the same tooling, they could quickly follow the web team who originally adopted storybook. Along with hot reloading, stor...