You can search for identifiers within the package.
in-package search v0.2.0
val bind : f:('a -> ('b, Error.t) result Lwt.t) -> ('a, Error.t) result Lwt.t -> ('b, Error.t) result Lwt.t
val map : f:('a -> 'b) -> ('a, Error.t) result Lwt.t -> ('b, Error.t) result Lwt.t