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import { SimpleOuterSubscriber, innerSubscribe, SimpleInnerSubscriber } from '../innerSubscribe';
export function exhaust() {
    return (source) => source.lift(new SwitchFirstOperator());
}
class SwitchFirstOperator {
    call(subscriber, source) {
        return source.subscribe(new SwitchFirstSubscriber(subscriber));
    }
}
class SwitchFirstSubscriber extends SimpleOuterSubscriber {
    constructor(destination) {
        super(destination);
        this.hasCompleted = false;
        this.hasSubscription = false;
    }
    _next(value) {
        if (!this.hasSubscription) {
            this.hasSubscription = true;
            this.add(innerSubscribe(value, new SimpleInnerSubscriber(this)));
        }
    }
    _complete() {
        this.hasCompleted = true;
        if (!this.hasSubscription) {
            this.destination.complete();
        }
    }
    notifyComplete() {
        this.hasSubscription = false;
        if (this.hasCompleted) {
            this.destination.complete();
        }
    }
}
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