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

sig
 type 'a channel
 val new_channel : unit -> 'a Event.channel
 type +'a event
 val send : 'a Event.channel -> 'a -> unit Event.event
 val receive : 'a Event.channel -> 'a Event.event
 val always : 'a -> 'a Event.event
 val choose : 'a Event.event list -> 'a Event.event
 val wrap : 'a Event.event -> ('a -> 'b) -> 'b Event.event
 val wrap_abort : 'a Event.event -> (unit -> unit) -> 'a Event.event
 val guard : (unit -> 'a Event.event) -> 'a Event.event
 val sync : 'a Event.event -> 'a
 val select : 'a Event.event list -> 'a
 val poll : 'a Event.event -> 'a option
end