Hermes is not the default JS runtime #2710
Description
Description
I am not sure if this is a bug. When opening devtools from metro (pressing j), the devtools show nothing and say The current JavaScript engine, JSI (<JSCRuntime@0x600002d7e600>), does not support debugging over the Chrome DevTools Protocol. Devtools in android works fine, only does not work on macos.
I searched in other repos but found nothing.
Steps to reproduce
npx react-native startnpx react-native run-macos- Press
jin the first window. - These are shown in the chrome devtools console:
Welcome to React Native DevTools
Debugger integration: iOS Bridge (RCTBridge)
The current JavaScript engine, JSI (<JSCRuntime@0x600002d7e600>), does not support debugging over the Chrome DevTools Protocol. See https://reactnative.dev/docs/debugging for more information.
React Native Version
0.79.6
Output of npx @react-native-community/cli info
System:
OS: macOS 15.6.1
CPU: (8) arm64 Apple M1 Pro
Memory: 123.23 MB / 16.00 GB
Shell:
version: "5.9"
path: /bin/zsh
Binaries:
Node:
version: 24.9.0
path: /opt/homebrew/bin/node
Yarn:
version: 1.22.22
path: /opt/homebrew/bin/yarn
npm:
version: 11.6.0
path: /opt/homebrew/bin/npm
Watchman:
version: 2025.09.01.00
path: /opt/homebrew/bin/watchman
Managers:
CocoaPods:
version: 1.16.2
path: /opt/homebrew/lib/ruby/gems/3.4.0/bin/pod
SDKs:
iOS SDK:
Platforms:
- DriverKit 25.0
- iOS 26.0
- macOS 26.0
- tvOS 26.0
- visionOS 26.0
- watchOS 26.0
Android SDK: Not Found
IDEs:
Android Studio: Not Found
Xcode:
version: 26.0.1/17A400
path: /usr/bin/xcodebuild
Languages:
Java:
version: 24.0.1
path: /opt/homebrew/opt/openjdk/bin/javac
Ruby:
version: 3.4.6
path: /opt/homebrew/opt/ruby/bin/ruby
npmPackages:
"@react-native-community/cli":
installed: 18.0.0
wanted: 18.0.0
react:
installed: 19.0.0
wanted: 19.0.0
react-native:
installed: 0.79.6
wanted: 0.79.6
react-native-macos:
installed: 0.79.0
wanted: ^0.79.0
npmGlobalPackages:
"*react-native*": Not Found
Android:
hermesEnabled: true
newArchEnabled: true
iOS:
hermesEnabled: true
newArchEnabled: true
Screenshots and Videos
No response