There’s at least:
https://github.com/jamen/elixir-wasm
And elixirscript can run Elixir in JavaScript, and might run in Wasm later on
https://github.com/elixirscript/elixirscript
https://github.com/elixirscript/elixirscript/issues/454
Seems AtomVM can run erlang in Wasm
https://github.com/bettio/AtomVM/issues/30
