Fix C++ Compilation Error in Emscripten

I'm facing a compilation error while trying to build a C++ project using the Emscripten library on Xcode. The issue arises during the build process.

This is a critical bug that needs to be resolved as it's blocking progress. The ideal freelancer for this project would be someone with:
- Extensive experience with C++ and Emscripten
- Proficient in using Xcode
- Skilled in debugging compilation errors
- Able to work under pressure and deliver promptly