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/** PURE_IMPORTS_START tslib,_innerSubscribe PURE_IMPORTS_END */
import * as tslib_1 from "tslib";
import { SimpleOuterSubscriber, innerSubscribe, SimpleInnerSubscriber } from '../innerSubscribe';
export function debounce(durationSelector) {
    return function (source) { return source.lift(new DebounceOperator(durationSelector)); };
}
var DebounceOperator = /*@__PURE__*/ (function () {
    function DebounceOperator(durationSelector) {
        this.durationSelector = durationSelector;
    }
    DebounceOperator.prototype.call = function (subscriber, source) {
        return source.subscribe(new DebounceSubscriber(subscriber, this.durationSelector));
    };
    return DebounceOperator;
}());
var DebounceSubscriber = /*@__PURE__*/ (function (_super) {
    tslib_1.__extends(DebounceSubscriber, _super);
    function DebounceSubscriber(destination, durationSelector) {
        var _this = _super.call(this, destination) || this;
        _this.durationSelector = durationSelector;
        _this.hasValue = false;
        return _this;
    }
    DebounceSubscriber.prototype._next = function (value) {
        try {
            var result = this.durationSelector.call(this, value);
            if (result) {
                this._tryNext(value, result);
            }
        }
        catch (err) {
            this.destination.error(err);
        }
    };
    DebounceSubscriber.prototype._complete = function () {
        this.emitValue();
        this.destination.complete();
    };
    DebounceSubscriber.prototype._tryNext = function (value, duration) {
        var subscription = this.durationSubscription;
        this.value = value;
        this.hasValue = true;
        if (subscription) {
            subscription.unsubscribe();
            this.remove(subscription);
        }
        subscription = innerSubscribe(duration, new SimpleInnerSubscriber(this));
        if (subscription && !subscription.closed) {
            this.add(this.durationSubscription = subscription);
        }
    };
    DebounceSubscriber.prototype.notifyNext = function () {
        this.emitValue();
    };
    DebounceSubscriber.prototype.notifyComplete = function () {
        this.emitValue();
    };
    DebounceSubscriber.prototype.emitValue = function () {
        if (this.hasValue) {
            var value = this.value;
            var subscription = this.durationSubscription;
            if (subscription) {
                this.durationSubscription = undefined;
                subscription.unsubscribe();
                this.remove(subscription);
            }
            this.value = undefined;
            this.hasValue = false;
            _super.prototype._next.call(this, value);
        }
    };
    return DebounceSubscriber;
}(SimpleOuterSubscriber));
//# sourceMappingURL=debounce.js.map