Hermes Debugger doesn't connect for 0.74 Release Candidate

[lunaleaps]

Old Version

0.73.x

New Version

0.74.0-rc.1

Description

Following the instructions to connect to the Hermes debugger https://reactnative.dev/docs/next/debugging

I expect to see the Hermes target in chrome://inspect but I don't.

This happens on both iOS and Android. It also occurs on 0.74.0-rc.0

It does not reproduce on 0.73.x so its a new regression

Steps to reproduce

1. npx react-native init Release074 --version 0.74.0-rc.2
2. Get metro running yarn start & built on either iOS or Android
3. Follow instructions for Hermes debugger via https://reactnative.dev/docs/next/debugging by heading to chrome://inspect and putting the port forwarding information

I'd expect to see the Hermes target in dev tools, but nothing shows up

Affected Platforms

Runtime - Android, Runtime - iOS

Output of npx react-native info

n/a

Stacktrace or Logs

n/a

Reproducer

--

Screenshots and Videos

No response

[github-actions]

⚠️	Missing Reproducible Example
ℹ️	We could not detect a reproducible example in your issue report. Please provide either: If your bug is UI related: a Snack If your bug is build/update related: use our Reproducer Template. A reproducer needs to be in a GitHub repository under your username.

[motiz88]

Ack, taking a look.

On my machine, at least for the iOS app, http://localhost:8081/json does show the targets, but chrome://inspect doesn't - I'm investigating why that could be.

[motiz88]

The same issue occurs for me on 0.73.5. I suspect a Chrome regression. Hmm, there was a delay but the targets did eventually show up with 0.73. Still investigating...