1 import { OuterSubscriber } from '../OuterSubscriber';
2 import { subscribeToResult } from '../util/subscribeToResult';
3 export const defaultThrottleConfig = {
7 export function throttle(durationSelector, config = defaultThrottleConfig) {
8 return (source) => source.lift(new ThrottleOperator(durationSelector, config.leading, config.trailing));
10 class ThrottleOperator {
11 constructor(durationSelector, leading, trailing) {
12 this.durationSelector = durationSelector;
13 this.leading = leading;
14 this.trailing = trailing;
16 call(subscriber, source) {
17 return source.subscribe(new ThrottleSubscriber(subscriber, this.durationSelector, this.leading, this.trailing));
20 class ThrottleSubscriber extends OuterSubscriber {
21 constructor(destination, durationSelector, _leading, _trailing) {
23 this.destination = destination;
24 this.durationSelector = durationSelector;
25 this._leading = _leading;
26 this._trailing = _trailing;
27 this._hasValue = false;
30 this._hasValue = true;
31 this._sendValue = value;
32 if (!this._throttled) {
42 const { _hasValue, _sendValue } = this;
44 this.destination.next(_sendValue);
45 this.throttle(_sendValue);
47 this._hasValue = false;
48 this._sendValue = null;
51 const duration = this.tryDurationSelector(value);
53 this.add(this._throttled = subscribeToResult(this, duration));
56 tryDurationSelector(value) {
58 return this.durationSelector(value);
61 this.destination.error(err);
66 const { _throttled, _trailing } = this;
68 _throttled.unsubscribe();
70 this._throttled = null;
75 notifyNext(outerValue, innerValue, outerIndex, innerIndex, innerSub) {
76 this.throttlingDone();
79 this.throttlingDone();
82 //# sourceMappingURL=throttle.js.map