val optdef : ('a -> 'b) -> 'a option -> 'b Js_of_ocaml.Js.optdef
val convdef : ('a -> 'b) -> 'a Js_of_ocaml.Js.Optdef.t -> 'b Js_of_ocaml.Js.optdef
val blockies : blockies Js_of_ocaml.Js.t
val make_opts : ?seed:string -> ?color:string -> ?bgcolor:string -> ?size:int -> ?scale:int -> ?spotcolor:string -> unit -> blockies_options Js_of_ocaml.Js.t
val create : ?seed:string -> ?color:string -> ?bgcolor:string -> ?size:int -> ?scale:int -> ?spotcolor:string -> unit -> Js_of_ocaml.Dom_html.canvasElement Js_of_ocaml.Js.t
val render : ?seed:string -> ?color:string -> ?bgcolor:string -> ?size:int -> ?scale:int -> ?spotcolor:string -> Js_of_ocaml.Dom_html.canvasElement Js_of_ocaml.Js.t -> unit