val return : 'a -> ('a, _, _) t
val map : ('a, 'd, 'e) t -> f:('a -> 'b) -> ('b, 'd, 'e) t
val both : ('a, 'd, 'e) t -> ('b, 'd, 'e) t -> ('a * 'b, 'd, 'e) t
val (<*>) : ('a -> 'b, 'd, 'e) t -> ('a, 'd, 'e) t -> ('b, 'd, 'e) t
val (<*) : ('a, 'd, 'e) t -> (unit, 'd, 'e) t -> ('a, 'd, 'e) t
val (*>) : (unit, 'd, 'e) t -> ('a, 'd, 'e) t -> ('a, 'd, 'e) t
val (>>|) : ('a, 'd, 'e) t -> ('a -> 'b) -> ('b, 'd, 'e) t
val apply : ('a -> 'b, 'd, 'e) t -> ('a, 'd, 'e) t -> ('b, 'd, 'e) t
val map2 :
('a, 'd, 'e) t ->
('b, 'd, 'e) t ->
f:('a -> 'b -> 'c) ->
('c, 'd, 'e) t
val map3 :
('a, 'd, 'e) t ->
('b, 'd, 'e) t ->
('c, 'd, 'e) t ->
f:('a -> 'b -> 'c -> 'result) ->
('result, 'd, 'e) t
val all : ('a, 'd, 'e) t list -> ('a list, 'd, 'e) t
val all_unit : (unit, 'd, 'e) t list -> (unit, 'd, 'e) t