import {Operator} from '../../Operator';
import {Observable} from '../../Observable';
import {Subscriber} from '../../Subscriber';
import {Scheduler} from '../../Scheduler';
import {queue} from '../../scheduler/queue';
export function timeInterval<T>(Ischeduler: Scheduler = queue): Observable<TimeInterval> {
return this.lift(new TimeIntervalOperator(scheduler));
}
export class TimeInterval {
constructor(public value: any, public interval: number) {
}
};
class TimeIntervalOperator<TimeInterval, R> implements Operator<TimeInterval, R> {
constructor(private scheduler: Scheduler) {
}
call(observer: Subscriber<TimeInterval>): Subscriber<TimeInterval> {
return new TimeIntervalSubscriber(observer, this.scheduler);
}
}
class TimeIntervalSubscriber<TimeInterval> extends Subscriber<TimeInterval> {
private lastTime: number = 0;
constructor(destination: Subscriber<TimeInterval>, private scheduler: Scheduler) {
super(destination);
this.lastTime = scheduler.now();
}
_next(value: TimeInterval) {
let now = this.scheduler.now();
let span = now - this.lastTime;
this.lastTime = now;
this.destination.next(new TimeInterval(value, span));
}
}
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