Module E.Option
val some : 'a React.event -> 'a option React.eventval value : ?default:'a React.signal -> 'a option React.event -> 'a React.event
Lwt
Lwt
E.Optionval some : 'a React.event -> 'a option React.eventval value : ?default:'a React.signal -> 'a option React.event -> 'a React.event