message: wasm bindgen for curr or next
diff: @@ -23,6 +23,10 @@ use std::io::{Result as IoResult, Write};
  feature = "ocaml_types",
  derive(ocaml::IntoValue, ocaml::FromValue, ocaml_gen::Enum)
  )]
  +#[cfg_attr(
  + feature = "wasm_types",
  + wasm_bindgen::prelude::wasm_bindgen
  +)]
  #[cfg_attr(test, derive(proptest_derive::Arbitrary))]
  pub enum CurrOrNext {
  Curr,
  