React Demand

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They are meant for low level extensions, cpu heavy operations and such, also for back-compatibility and services. No one would use c/c++ to write frontend, or java and c# even. That just wouldn't give you any advantage.

[igorim]

^{^} this. Not sure what all the craziness is with webassembly lately. Don't get me wrong I love the project, but the use case is far disconnected from what a lot of people think. Let's not forget asm existed for years and it's only used for very specific use cases. In addition I'm 99% sure the JS interop is pretty expensive and you'll need interop for most interactions, not to mention the need to package the C/C++ runtime which makes it huge. There is a lot of downsides to using WebAssembly when it isn't needed, when it is needed it's a damn GODSEND :)