@reactivex/rxjs/dist/es6/operator/audit.js

Reactive Extensions for modern JavaScript

import { tryCatch } from '../util/tryCatch';
import { errorObject } from '../util/errorObject';
import { OuterSubscriber } from '../OuterSubscriber';
import { subscribeToResult } from '../util/subscribeToResult';
/**
 * @param durationSelector
 * @return {Observable<R>|WebSocketSubject<T>|Observable<T>}
 * @method audit
 * @owner Observable
 */
export function audit(durationSelector) {
    return this.lift(new AuditOperator(durationSelector));
}
class AuditOperator {
    constructor(durationSelector) {
        this.durationSelector = durationSelector;
    }
    call(subscriber, source) {
        return source._subscribe(new AuditSubscriber(subscriber, this.durationSelector));
    }
}
/**
 * We need this JSDoc comment for affecting ESDoc.
 * @ignore
 * @extends {Ignored}
 */
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) {
            const duration = tryCatch(this.durationSelector)(value);
            if (duration === errorObject) {
                this.destination.error(errorObject.e);
            }
            else {
                this.add(this.throttled = subscribeToResult(this, duration));
            }
        }
    }
    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();
    }
}
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