I've been trying to update the https://reasonml.github.io/en/try.html tool for the new ReasonReact syntax and I've found that the JSX PPX cannot be compiled for the browser correctly.

The #if BS_COMPILER_IN_BROWSER then code is currently commented out but if I re-enable it, it still doesn't generate the correct output. I think the issue is that only the mapper.structure is being applied to the source code but not the mapper.expr, mapper.signature, or mapper.module_binding.

It doesn't seem like those can be applied in the same way as

let pstr = Parse.implementation lexer in let pstr = mapper.structure mapper pstr in Pprintast.structure Format.str_formatter pstr;

because the resulting ocaml_code is empty when I attempt it.

I'm more than happy to keep working on this but I'll need some direction because I've hit a dead-end.