Not seeing metro bundler start up after executing npx react-native run-ios

[rencire]

Description:

Not seeing metro bundler start up automatically after executing npx react-native run-ios.

Seeing the launchPackager.command open in a new Terminal window, but metro bundler does not seem to start correctly:

Note: Metro bundler starts up fine when manually starting in a new shell via npx react-native build.

React Native version:

System:
    OS: macOS Mojave 10.14.6
    CPU: (12) x64 Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz
    Memory: 162.72 MB / 16.00 GB
    Shell: 5.3 - /bin/zsh
  Binaries:
    Node: 12.16.1 - ~/.nvm/versions/node/v12.16.1/bin/node
    npm: 6.13.4 - ~/.nvm/versions/node/v12.16.1/bin/npm
  SDKs:
    iOS SDK:
      Platforms: iOS 13.2, DriverKit 19.0, macOS 10.15, tvOS 13.2, watchOS 6.1
  IDEs:
    Xcode: 11.3.1/11C504 - /usr/bin/xcodebuild
  npmPackages:
    react: 16.9.0 => 16.9.0
    react-native: 0.61.5 => 0.61.5

Steps To Reproduce

Same steps as creating a new react native project, as per the docs:

1. npx react-native init myproj3
2. cd myproj3
3. npx react-native run-ios
4. Notice that metro bundler does not start up correctly.

Expected Results

Expected metro bundler to start automatically in a new terminal window after running npx react-native run-ios.

Snack, code example, screenshot, or link to a repository:

Output from npx react-native run-ios

Resulting error in simulator from not having a js bundle:

[ccfz]

Does react-native start open metro?

[rencire]

Does react-native start open metro?

Yes it does when I run npx react-native start.

[ccfz]

I think this might be duplicate with this: #25509

[chrisglein]

Issue is resolved, moved to the CLI repo: react-native-community/cli#484
That is resolved, but has some more recent comments. This seems to need a fresh investigation and should move to the CLI repo.

[hramos]

@rencire can you open this issue in the CLI repo?

[archfz]

Related hotfix for linux in #28807