+import { OuterSubscriber } from '../OuterSubscriber';
+import { subscribeToResult } from '../util/subscribeToResult';
+export function audit(durationSelector) {
+ return function auditOperatorFunction(source) {
+ return source.lift(new AuditOperator(durationSelector));
+ };
+}
+class AuditOperator {
+ constructor(durationSelector) {
+ this.durationSelector = durationSelector;
+ }
+ call(subscriber, source) {
+ return source.subscribe(new AuditSubscriber(subscriber, this.durationSelector));
+ }
+}
+class AuditSubscriber extends OuterSubscriber {
+ constructor(destination, durationSelector) {
+ super(destination);
+ this.durationSelector = durationSelector;
+ this.hasValue = false;
+ }
+ _next(value) {
+ this.value = value;
+ this.hasValue = true;
+ if (!this.throttled) {
+ let duration;
+ try {
+ const { durationSelector } = this;
+ duration = durationSelector(value);
+ }
+ catch (err) {
+ return this.destination.error(err);
+ }
+ const innerSubscription = subscribeToResult(this, duration);
+ if (!innerSubscription || innerSubscription.closed) {
+ this.clearThrottle();
+ }
+ else {
+ this.add(this.throttled = innerSubscription);
+ }
+ }
+ }
+ clearThrottle() {
+ const { value, hasValue, throttled } = this;
+ if (throttled) {
+ this.remove(throttled);
+ this.throttled = null;
+ throttled.unsubscribe();
+ }
+ if (hasValue) {
+ this.value = null;
+ this.hasValue = false;
+ this.destination.next(value);
+ }
+ }
+ notifyNext(outerValue, innerValue, outerIndex, innerIndex) {
+ this.clearThrottle();
+ }
+ notifyComplete() {
+ this.clearThrottle();
+ }
+}
+//# sourceMappingURL=audit.js.map
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