# Module Std.Exception_check

    module Exception_check: Exception_check

    val create : ?listen_port:int -> (string * exn) list -> unit

create should not be called more than once

    val maybe_raise : string list -> unit

`maybe_raise name` if the exception associated with any name in `name` has been triggered, then raise it, otherwise do nothing. Only the first exception in the list will be raised. This function is thread safe.