I've been building an app in React-Native. It initially was a 0.60 project, and over the course of development I have upgraded it several times and not it's on 0.63.4.
I noticed that, when running a release build on Android, the app feels really slow. It feels like it's eating up all the phone's memory. When I run it in Android Studio and attach a profiler, all seems normal though (+- 15% CPU usage, 128mb memory usage).
I tried adding Hermes to my app to see if it would make any difference, but as soon as I set the enableHermes parameter to true, clean & build, my app crashes without any error message (after a successful build) as soon as it launches.
I then went to React-Native's docs, where an alert said that each Hermes release is aimed at a specific RN version. Fine, I thought. React 0.63.x has Hermes version 0.5.3. Whenever I go to my yarn.lock and set hermes-engine "0.5.3", it said it cannot find it and asks me which version I want to install instead.
I'm puzzled.
QuestionWhat version of Hermes is appropriate for React-Native 0.63.4, and How do I add it appropriately to prevent the no-error-message crashes I'm getting now?
Any guidance would be highly appreciated.