Rx.Observable.toAsync(func, [scheduler], [context])
Converts the function into an asynchronous function. Each invocation of the resulting asynchronous function causes an invocation of the original synchronous function on the specified scheduler.
Arguments
func(Function): Function to convert to an asynchronous function.[scheduler=Rx.Scheduler.timeout](Scheduler): Scheduler to run the function on. If not specified, defaults to Scheduler.timeout.[context](Any): The context for the func parameter to be executed. If not specified, defaults to undefined.
Returns
(Function): Asynchronous function.