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/** PURE_IMPORTS_START tslib,_Subscriber PURE_IMPORTS_END */
import * as tslib_1 from "tslib";
import { Subscriber } from '../Subscriber';
export function refCount() {
    return function refCountOperatorFunction(source) {
        return source.lift(new RefCountOperator(source));
    };
}
var RefCountOperator = /*@__PURE__*/ (function () {
    function RefCountOperator(connectable) {
        this.connectable = connectable;
    }
    RefCountOperator.prototype.call = function (subscriber, source) {
        var connectable = this.connectable;
        connectable._refCount++;
        var refCounter = new RefCountSubscriber(subscriber, connectable);
        var subscription = source.subscribe(refCounter);
        if (!refCounter.closed) {
            refCounter.connection = connectable.connect();
        }
        return subscription;
    };
    return RefCountOperator;
}());
var RefCountSubscriber = /*@__PURE__*/ (function (_super) {
    tslib_1.__extends(RefCountSubscriber, _super);
    function RefCountSubscriber(destination, connectable) {
        var _this = _super.call(this, destination) || this;
        _this.connectable = connectable;
        return _this;
    }
    RefCountSubscriber.prototype._unsubscribe = function () {
        var connectable = this.connectable;
        if (!connectable) {
            this.connection = null;
            return;
        }
        this.connectable = null;
        var refCount = connectable._refCount;
        if (refCount <= 0) {
            this.connection = null;
            return;
        }
        connectable._refCount = refCount - 1;
        if (refCount > 1) {
            this.connection = null;
            return;
        }
        var connection = this.connection;
        var sharedConnection = connectable._connection;
        this.connection = null;
        if (sharedConnection && (!connection || sharedConnection === connection)) {
            sharedConnection.unsubscribe();
        }
    };
    return RefCountSubscriber;
}(Subscriber));
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