Module `Chartjs_annotation.CoerceTo`

val lineAnnotation : baseAnnotation Js_of_ocaml.Js.t -> 'a lineAnnotation Js_of_ocaml.Js.t Js_of_ocaml.Js.opt
val boxAnnotation : baseAnnotation Js_of_ocaml.Js.t -> ('a, 'b) boxAnnotation Js_of_ocaml.Js.t Js_of_ocaml.Js.opt