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What’s New in React Native 0.64?
Discover what’s new and what’s impacted by this release
React Native 0.64-rc1 was released a few days ago, and the stable version is going to come up really soon. Let’s find out what changes this new version bring us.
Hermes on iOS
Hermes is an open-source JavaScript engine optimized for running React Native apps on Android. For many apps, enabling Hermes will result in improved start-up time, decreased memory usage, and smaller app size.
Since version 0.60.4, Hermes has been available for Android. But in this new release, you’ll be able to use Hermes on iOS as well.
Convert a Hermes Tracing Profile to the Chrome Format
We continue with Hermes with a new command to download the Hermes Sampling Profiler to a local machine.
It’s not something new, of course. You can already profile your React Native app running on Hermes. But this new command helps users convert a Hermes tracing profile to a Chrome tracing profile and pull it to the local machine.
react-native profile-hermes [destinationDir] <flag>All of these details are available on the PR on GitHub.
