wyeo · May 29, 2017 15:20
diff --git a/Interval_operator b/Interval_operator
 Observable.interval = (period) => {
  Observable.prototype.subscribe = (nextFn) => {
    let i = 0
    const timeout = setInterval((function(){ nextFn(i++) }), period)
    return clearInterval.bind(null, timeout)
  }
  return new Observable()
 }
	Observable.interval = (period) => {
	Observable.prototype.subscribe = (nextFn) => {
	let i = 0
	const timeout = setInterval((function(){ nextFn(i++) }), period)
	return clearInterval.bind(null, timeout)
	}
	return new Observable()
	}