fix: fix Obj-C file extension in project.pbxproj

[Simek]

Summary

Currently when creating Native Module package for iOS the invalid Objective-C implementation file extension (.mm) is provided in project.pbxproj. This causes the inability to open and edit the package .m file in XCode.

This PR fixes that issue simply by replacing the incorrect file extension with the correct one.

Test Plan

After generating the project with the change I can open implementation code in the XCode.

What's required for testing (prerequisites)?

XCode!

What are the steps to reproduce (after prerequisites)?

Generate iOS Native Project and try to open main file in XCode.

Compatibility

OS	Implemented
iOS	✅
Android	❌

Checklist

• I have tested this on a device and a simulator
• I added the documentation in README.md
• I mentioned this change in CHANGELOG.md
• I updated the typed files (TS and Flow)
• I added a sample use of the API in the example project (example/App.js)

[satya164]

Hey! Thanks a lot for the PR and sorry for the late review. We need mm extension for C++ modules afaik. Can you add a conditional to have mm for C++ module and m for rest like we do for swift?

[Simek]

Hey! Thanks a lot for the PR and sorry for the late review. We need mm extension for C++ modules afaik. Can you add a conditional to have mm for C++ module and m for rest like we do for swift?

@satya164 Thank you for the review! I have a stashed changeset with review changes ready, but I want to ask one question before I push it: Dose the Swift project requires .m files too? It is not obvious from the current file, because .m files are present in some swift conditionals but not all of them (PBXBuildFile section do not include source .m file for example).

[satya164]

I had received a PR for adding Swift and C++ so I am not 100% sure, but if I understand correctly, for both Swift and Obj-C, we need .m and for C++ we need .mm :)

[Simek]

I hope that I made the correct changes. I have tried to clean up the logic a bit by merging conditionals (so now there are always three branches: CPP, Swift and rest). Let me know what do you think and if updates are correct in the first place. 🙂