Diagnostics.SpanFreeError
type t = private
| Data of Context.t * kind
val pp : Ppx_deriving_runtime.Format.formatter -> t -> Ppx_deriving_runtime.unit
val show : t -> Ppx_deriving_runtime.string
exception Exn of t
val payload : t -> Context.t * kind
val raise : ?span:T.span Prelude.list -> Context.t -> kind -> 'a