Frontend.WarningsUsed for user-facing warning messages
type t = Middle.Location_span.t * stringval pp : ?printed_filename:string -> ?code:string -> t Fmt.tval pp_warnings : ?printed_filename:string -> ?code:string -> t list Fmt.tval to_grace :
?printed_filename:string ->
?code:string ->
t ->
'a Grace.Diagnostic.t