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module Js = Js_of_ocaml.Js

(** Provide a function for extracting the page id from the URL *)
val page_id
  : unit -> Jstr.t option

class type content = object

  method title
    : Jstr.t Js.opt Js.readonly_prop

  method content
    : Jv.t Js.opt Js.readonly_prop

  method date 
    : float Js.opt Js.readonly_prop

end

(** load f] will try to load the content associated with the given key.

    The function [f] is called to identified which is the appropriate page id.
*)
val load
  : Jstr.t option -> content Js.t

val save
  : check:(content Js.t -> bool) -> content Js.t -> Jstr.t option -> (bool, Jv.Error.t) result

(** Remove the page from the storage. *)
val delete 
  : (unit -> Jstr.t option) -> unit

(** Collect all the keys to the existing pages *)
val get_ids
  : unit -> Jstr.t list