react-native-extended-stylesheet VS detect-responsive-traits

My 2 cents: ditch that mindset and embrace Stylesheet. There’s some nice extensions like https://github.com/vitalets/react-native-extended-stylesheet that allow global variables and what not.

Not yet responsive, but planned responsive with react-native-media-queries, which makes pure CSS media queries also run on native (with device orientation). Since Magnus UI generates pure CSS media queries when run on web. They consider it more performant than using Fresnel. But the jury is out... Alternatively, it might be that Magnus UI will use react-native-extended-stylesheet as a drop-in replacement for the StyleSheet in React Native which also supports media queries on native.

This library is very handy as well https://github.com/vitalets/react-native-extended-stylesheet

Optimise Fresnel with detect-responsive-traits: SSR based on sniffing user-agent where it can, but all breakpoints if not. To optimise bytes sent over-the-wire.

Before, Dripsy used a library called Fresnel to achieve achieve Responsivity with CSS media queries. CSS breakpoints on web will rely on the mobile device's user agent for most cases. But since this can be inaccurate, Fresnel also uses pre-emptive server-side breakpoint generation. Basically, if the mobile user-agent cannot be accurately detected (if you combine Fresnel with its sister library, detect-responsive-traits), then Fresnel will render all media query breakpoints on the server (a bit of extra work for the server, since it might lead to rendering more components). So the client's browser will receive all breakpoints on first render and can immediately start rendering according to the correct ones. Instead of waiting for React to rehydrate before only then running the media queries with CSS-in-JS, which would have given latency and potentially unwanted visual side-effects. This becomes most acute when you are using SSR, and thus don't want to wait for rehydration on the client to start showing the responsively laid out content.