The people writing Firefly are trying to support OTP on WASM. Because the WASM runtime have different characteristics and guarantees from BEAM, and they don’t w

The people writing Firefly are trying to support OTP on WASM. Because the WASM runtime have different characteristics and guarantees from BEAM, and they don’t want to run BEAM inside WASM, they created an alternate runtime. There was at least one instance where Dockyard proposed and implemented changes to the WASM spec itself in order to support Elixir/Erlang/OTP in WASM.