[IOS] Can not connect React Native Debugger when run with Hermes

[JameFreshket]

React Native Debugger app version: 0.13
React Native version: 0.71.3
Platform: iOS
Is real device of platform: No
Operating System: macOS

Can not connect react-native-debugger with Hermes in React Native CLI, Please help me to find solution or workaround?

[daviaugustos]

Same issue here. I tried a workaround (Open Debugger in iOS simulator not working in RN 0.70.0 #34615) found at react-native repo, disabling hermes temporarily, but how I'm using the new Turbo Modules arch is not possible to do that.

[NBROKN]

I had the same issue and for other reasons i went with a dev build, and since i had sdk48, remote debugger was not an option, i tried to downgrade to sdk47, then the reanimated library didn't work and i read in expo doc that even if it did, it wont work with remote debugger. Since i needed that reanimated library, i went back to sdk48 and for some reason, now i have remote debugger option in app dev menu and just confirmed that react native debugger fully works. Go with a dev build and see if it works for you.

That's my 2cents that i still cant make sense of.

[MrNaughtZero]

I too had this issue today. Changing the engine inside your app.json can help you get debugger working:

"jsEngine" : "jsc"

[TheElmo]

@jhen0409 Are there plans to look into this?

[codiku-dev]

Indeed "jsEngine" : "jsc" in app.json is going to work, but hermes is a great improvement, so we need a way to be able to use rnd even with hermes

[irumiantcev]

"jsEngine" : "jsc" doesn't work with iOS simulator. So we have only one opportunity to run Debugger with Android simulator.

[about-coding]

"jsEngine": "jsc" worked for me after running npx expo start --localhost. Important to use the --localhost flag

[irumiantcev]

"jsEngine": "jsc" worked for me after running npx expo start --localhost. Important to use the --localhost flag

you have no ability to switch jsEngine property in expo46 for iOS. Only for Android. So, --localhost flag will not help.

[about-coding]

I see. I've upgraded to SDK 48 and it's possible also for iOS

[surya9901]

I too had this issue today. Changing the engine inside your app.json can help you get debugger working:

"jsEngine" : "jsc"

I tried this but still it's not working for me. Pls correct me if I am wrong.

"react": "18.2.0",
"react-native": "0.71.4",
Metro version: 0.73.8

[Nantris]

Duplicate of #573?

[JameFreshket]

Any update?

[gusgard]

I created a package to solve this issue

yarn add react-native-devsettings

import 'react-native-devsettings';

basically, it is doing NativeModules.DevSettings.setIsDebuggingRemotely(true);
https://www.npmjs.com/package/react-native-devsettings?activeTab=readme

[jaexplorer]

@gusgard trying now

[jaexplorer]

@gusgard Omg I love you this works.

[JameFreshket]

@gusgard I appreciate your comment, bro. It's the best one I've seen this year.

[ilyausorov]

@gusgard Omg I love you this works.

Came in to say this too

[NathanNovak]

@gusgard Thanks so much for this!