Post

What we just announced at React Conf 1/ The New Architecture is now the ONLY supported Architecture for React Native. Starting with v0.82, you won't be able to opt-out from New Architecture anymore.

Removing the Legacy Architecture comes with clear benefits: - Smaller app bundles, up to 1Mb reduction - Faster from-source builds (from 300s to 140s on iOS) - Simpler mental model If you haven't enabled New Architecture yet, we recommend upgrading to 0.81, enabling, then moving to 0.82.

In recent months, we've seen several apps migrate to the New Architecture, to unleash better performance. One example is how @ShopifyEng was able to improve app launch on Android & iOS, while also reducing unnecessary re-rendering. shopify.engineering/react-nativ...

2/ Hermes V1 Today we also announced Hermes V1, the next evolution of our JavaScript Engine! Hermes V1 shows a 60% avg improvement on synthetic benchmarks, includes improved modern JS support, and ships today in 0.82 as experimental.

3/ DOM APIs React Native is also aligning more and more with the Web! Starting with 0.82, we've added support for imperative DOM APIs to inspect the tree as you would do on the Web. reactnative.dev/docs/elemen...

And, coming later in React Native 0.83, you'll be able to profile and understand your app more intuitively, with native support for the Performance panel and Network panel in React Native DevTools.