/** PURE_IMPORTS_START .._ReplaySubject PURE_IMPORTS_END */
import { ReplaySubject } from '../ReplaySubject';
/**
 * @method shareReplay
 * @owner Observable
 */
export function shareReplay(bufferSize, windowTime, scheduler) {
    return function (source) { return source.lift(shareReplayOperator(bufferSize, windowTime, scheduler)); };
}
function shareReplayOperator(bufferSize, windowTime, scheduler) {
    var subject;
    var refCount = 0;
    var subscription;
    var hasError = false;
    var isComplete = false;
    return function shareReplayOperation(source) {
        refCount++;
        if (!subject || hasError) {
            hasError = false;
            subject = new ReplaySubject(bufferSize, windowTime, scheduler);
            subscription = source.subscribe({
                next: function (value) { subject.next(value); },
                error: function (err) {
                    hasError = true;
                    subject.error(err);
                },
                complete: function () {
                    isComplete = true;
                    subject.complete();
                },
            });
        }
        var innerSub = subject.subscribe(this);
        return function () {
            refCount--;
            innerSub.unsubscribe();
            if (subscription && refCount === 0 && isComplete) {
                subscription.unsubscribe();
            }
        };
    };
}
;
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