Reason · Reason lets you write simple, fast and quality type safe code while leveraging both the JavaScript & OCaml ecosystems.

sig
 type data
 type t
 val create : int -> Weak.S.t
 val clear : Weak.S.t -> unit
 val merge : Weak.S.t -> Weak.S.data -> Weak.S.data
 val add : Weak.S.t -> Weak.S.data -> unit
 val remove : Weak.S.t -> Weak.S.data -> unit
 val find : Weak.S.t -> Weak.S.data -> Weak.S.data
 val find_opt : Weak.S.t -> Weak.S.data -> Weak.S.data option
 val find_all : Weak.S.t -> Weak.S.data -> Weak.S.data list
 val mem : Weak.S.t -> Weak.S.data -> bool
 val iter : (Weak.S.data -> unit) -> Weak.S.t -> unit
 val fold : (Weak.S.data -> 'a -> 'a) -> Weak.S.t -> 'a -> 'a
 val count : Weak.S.t -> int
 val stats : Weak.S.t -> int * int * int * int * int * int
end