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open Js_of_ocaml
open Js
type nonrec 'a t = 'a t
type nonrec 'a optdef = 'a optdef
type nonrec 'a opt = 'a opt
type nonrec 'a js_array = 'a js_array
type nonrec 'a readonly_prop = 'a readonly_prop
type nonrec 'a meth = 'a meth
type nonrec 'a constr = 'a constr
type nonrec 'a callback = 'a callback
type nonrec ('a, 'b) meth_callback = ('a, 'b) meth_callback
type nonrec js_string = js_string
type top = Unsafe.top
type any = Unsafe.any
type any_item = string * Unsafe.any
let optdef f : ('a option -> 'b optdef) = function
| None -> undefined
| Some x -> def (f x)
let to_optdef f : ('a optdef -> 'b option) = fun x -> match Optdef.to_option x with
| None -> None
| Some x -> Some (f x)
let def_list f = function
| [] -> undefined
| l -> def (f l)
let of_list l : 'a js_array t = array @@ Array.of_list l
let of_listf f l : 'a js_array t = of_list @@ List.map f l
let to_list (a : 'a js_array t) = Array.to_list @@ to_array a
let to_listf f (a : 'a js_array t) = List.map f (to_list a)
let manip_list f a = of_list @@ f @@ to_list a
module Table = struct
type nonrec 'a t = < > t
let obj = Unsafe.global##._Object
let create () : 'a t = new%js obj
let add (t : 'a t) (k : string) (v : 'a) = Unsafe.set t (string k) v
let add_list (t : 'a t) (l : (string * 'a) list) =
List.iter (fun (k, v) -> add t k v) l
let add_listf (t : 'a t) f (l : (string * 'a) list) =
List.iter (fun (k, v) -> add t k (f v)) l
let make (l : 'a list) : 'a t =
let t = create () in
List.iter (fun (k, v) -> add t k v) l;
t
let makef f (l : 'a list) : 'a t =
let t = create () in
List.iter (fun (k, v) -> add t k (f v)) l;
t
let remove (t : 'a t) (k : string) = Unsafe.delete t (string k)
let find (t : 'a t) (k : string) : 'a option =
Optdef.to_option (Unsafe.get t (string k))
let keys (t : 'a t) : string list =
to_listf to_string @@ obj##keys t
let items (t : 'a t) : (string * 'a) list =
to_listf (fun k -> to_string k, Unsafe.get t k) @@ obj##keys t
let itemsf f (t : 'a t) : (string * 'a) list =
to_listf (fun k -> to_string k, f @@ Unsafe.get t k) @@ obj##keys t
let length (t : 'a t) = (obj##keys t)##.length
let merge (l : 'a t list) : 'a t =
let t = create () in
List.iter (fun x -> List.iter (fun (k, v) -> add t k v) (items x)) l;
t
end
type 'a table = 'a Table.t
type 'a table_cons = T of 'a table | L of (string * 'a) list
let to_table : 'a table_cons -> 'a table = function
| T t -> t
| L l -> Table.make l
let to_tablef f : 'a table_cons -> 'a table = function
| T t -> t
| L l -> Table.makef f l
let to_table_def : 'a table_cons -> 'a table optdef = function
| T t -> if Table.length t = 0 then undefined else def t
| L l -> def_list Table.make l
let to_tablef_def f : 'a table_cons -> 'a table optdef = function
| T t -> if Table.length t = 0 then undefined else def t
| L l -> def_list (Table.makef f) l
let to_any = Unsafe.inject
let coerce = Unsafe.coerce
let to_any_table f = function
| L l -> L (List.map (fun (k, v) -> k, f v) l)
| T t -> T (Table.(make (itemsf f t)))
class type unit_promise = object
method then_ : (unit -> unit) -> unit_promise t meth
method catch : ('error -> unit) -> unit_promise t meth
end
module Async = struct
let js (x : unit_promise t) = x
let cb (x : unit_promise t) f = ignore @@ x##then_ f
let lwt (x : unit_promise t) =
let waiter, notifier = Lwt.wait () in
ignore @@ x##then_ (fun x -> Lwt.wakeup notifier x);
waiter
end