Incorrect behaviour of throttleEnd

[dmitry-korolev]

Problem:
In a case when a function throttled with throttleEnd is invoked several times within a wait period it is finally called by throttleEnd with arguments, provided at first invoke.

const throttled = throttleEnd(100, console.log)
throttled(1)
throttled(2)
throttled(3)
// -> 1

Lodash throttle behaves differentely:

const throttled = _.throttle(console.log, 100, { leading: false, trailing: true })
throttled(1)
throttled(2)
throttled(3)
// -> 3

RxJS operator auditTime, which is similar to throttleTime, but emits at the end of the wait period, behaves likewise:

const throttled = new Observable(observer => {
	observer.next(1)
	observer.next(2)
	observer.next(3)
}).pipe(auditTime(100))
throttled.subscribe(console.log)
// -> 3

Using the last provided set of arguments seems much more logical to me.

I suggest changing the throttleEnd implementation to make it more sense.