Are you an iOS user who wants to enable Hermes on your device? Well, you’re in luck because it’s not a complicated process. In this tutorial, we will guide you through the steps to enable Hermes on your iOS device.
What is Hermes?
Hermes is a JavaScript engine developed by Facebook that optimizes the performance of React Native apps. It improves the startup time of apps and reduces their memory footprint. Enabling Hermes on your iOS device can make your apps faster and more efficient.
Step 1: Update Your React Native App
First, make sure that your React Native app is updated to version 0.64 or higher. You can check the version of your app by running the following command in your terminal:
“`
react-native -v
“`
If your app is not updated, you can update it by running the following command:
“`
npm install -g react-native-cli
“`
Once the update is complete, you’re ready for the next step.
Step 2: Enable Hermes
To enable Hermes on your iOS device, open Xcode and select your project from the left-hand side of the screen. Then, select the “Build Settings” tab and search for “JavaScript Engine”.
Under “JavaScript Engine”, select “Hermes” from the dropdown menu. This will enable Hermes for your app.
Note:
If you cannot find “JavaScript Engine” in Build Settings, make sure that you have selected “All” instead of “Basic” at the top of Build Settings.
Now, build and run your app on an iOS device or simulator. You should see a significant improvement in startup time and performance.
Step 3: Test Your App
After enabling Hermes on your iOS device, test your app thoroughly to ensure that there are no issues or bugs caused by this change. If you encounter any issues, you can disable Hermes and revert to the previous JavaScript engine.
To disable Hermes, simply select “JavaScriptCore” from the dropdown menu under “JavaScript Engine” in Build Settings.
Conclusion
Enabling Hermes on your iOS device can significantly improve the performance of your React Native apps. With just a few simple steps, you can make your apps faster and more efficient. Remember to test your app thoroughly after making this change to ensure that everything is working as expected.
10 Related Question Answers Found
Are you trying to enable Hermes in your React Native iOS project? Hermes is a JavaScript engine that can improve the performance of your app by reducing the time it takes for JavaScript code to execute. In this tutorial, we will guide you through the steps required to enable Hermes in your React Native iOS project.
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Make sure you have your University of Cambridge UIS password ready.
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