I am interested, can FlatAssembler g be used to target WebAssembly, like it can be used to target Java Virtual Machine or ARM? I've made a compiler for my programming language targeting WebAssembly, and you can see some results. However, I used WebAssembly Binary Toolkit for that. The only two assemblers that can target WebAssembly right now are, as far as I can tell, WebAssembly Binary Toolkit and Emscripten LLVM-AS. Emscripten LLVM-AS, if you ask me, sucks a hell lot, it can't even parse a floating-pont number. WebAssembly Binary Toolkit doesn't have such problems (after all, it was made to be used by end-users as well as compilers, just like FlatAssembler), however, it lacks a powerful macro system. So, I am asking, is it possible to use FlatAssembler g to target WebAssembler? As far as I can tell, WebAssembly is rather different from x86 assembly in some important ways, like that, for instance, the assembler is supposed to complain if you try to write an expression without storing it to a variable (and that includes calling a function of a non-null type without storing its result). Can FlatAssembler g usefully deal with that?

I've done some work on it back in 2017 (you can find it on the main list of fasmg-related resources), but it is just a basic framework with only a subset of instructions actually implemented, serving more as a demonstration of fasmg capabilities. I have later included it in the official GitHub repository, but I did not work on it further.

Thanks for the information!
By the way, do you mind my GitHub profile name? It's kind of a funny story. I wanted to name my GitHub profile after some archaic piece of software nobody uses. And, back at that time, I thought assembly language compilers were such software, and that the development of FlatAssembler stopped sometime in the late 1990s. But, as I know now, I ended up naming my profile after a piece of software which is relatively actively developed.