Hi,

I'm experimenting with building WASM components with emscripten. I'm using wit-bindgen to generate C code from a wit file, then compile everything with emcc.

After that I run wasm-tools component new emcc-output.wasm -o component.wasm to create the component and finally wasmtime run --invoke 'error-message(-6)' component.wasm to run the code.

The problem is that WIT functions are kebab-case and this is currently not allowed in emscripten, see https://github.com/emscripten-core/emscripten/blob/main/tools/emscripten.py#L575

Using this .wit

world root {
  export error-message: func(error-code: s32) -> string;
}

produces the error

emcc: error: invalid export name: cabi_post_error-message

For testing I patched out the check and everything seems to be working. Maybe you could allow dashes in export names for STANDALONE_WASM or PURE_WASI?