class type['a]
js_array =object
..end
method _get_length : int
method _set_length : int -> unit
method join : string -> string
method pop : 'a
method push : 'a -> int
method reverse : unit
method shift : 'a
method slice : int -> int -> 'a js_array
method sort : 'a js_array
method sort_compare_ : ('a -> 'a -> int) -> 'a js_array
method toLocaleString : string
method toString : string
method unshift : 'a -> int