Are you tired of waiting for your JavaScript code to compile? Do you wish there was a faster way to run your code? Look no further than Hermes!
Hermes is an open-source JavaScript engine optimized for mobile devices. It was created by Facebook to improve the startup time and reduce memory footprint of React Native apps. But how much faster is it compared to other engines like V8?
According to Facebook’s benchmarks, Hermes can be up to 3.7 times faster than V8! This is because Hermes uses a bytecode-based virtual machine instead of a just-in-time (JIT) compiler like V8. This means that Hermes compiles the JavaScript code ahead of time, allowing it to execute faster and use less memory.
But it’s not just about speed. Hermes also has some security benefits over V8. Because it doesn’t use a JIT compiler, there are fewer opportunities for attackers to exploit vulnerabilities in the engine.
So how can you start using Hermes in your React Native app? First, make sure you have the latest version of React Native installed (at least version 0.60). Then, enable Hermes by adding the following line to your `android/app/build.gradle` file:
“`
project.ext.react = [
enableHermes: true
]
“`
Once you’ve made this change, rebuild your app and enjoy the faster startup times!
In conclusion, if you’re looking for a faster and more secure way to run your JavaScript code on mobile devices, give Hermes a try. With its ahead-of-time compilation and bytecode-based virtual machine, it’s no wonder why Facebook has chosen it as the default engine for React Native apps.