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name : Subject.js
 import { __extends, __values } from "tslib";
import { Observable } from './Observable';
import { Subscription, EMPTY_SUBSCRIPTION } from './Subscription';
import { ObjectUnsubscribedError } from './util/ObjectUnsubscribedError';
import { arrRemove } from './util/arrRemove';
import { errorContext } from './util/errorContext';
var Subject = (function (_super) {
    __extends(Subject, _super);
    function Subject() {
        var _this = _super.call(this) || this;
        _this.closed = false;
        _this.currentObservers = null;
        _this.observers = [];
        _this.isStopped = false;
        _this.hasError = false;
        _this.thrownError = null;
        return _this;
    }
    Subject.prototype.lift = function (operator) {
        var subject = new AnonymousSubject(this, this);
        subject.operator = operator;
        return subject;
    };
    Subject.prototype._throwIfClosed = function () {
        if (this.closed) {
            throw new ObjectUnsubscribedError();
        }
    };
    Subject.prototype.next = function (value) {
        var _this = this;
        errorContext(function () {
            var e_1, _a;
            _this._throwIfClosed();
            if (!_this.isStopped) {
                if (!_this.currentObservers) {
                    _this.currentObservers = Array.from(_this.observers);
                }
                try {
                    for (var _b = __values(_this.currentObservers), _c = _b.next(); !_c.done; _c = _b.next()) {
                        var observer = _c.value;
                        observer.next(value);
                    }
                }
                catch (e_1_1) { e_1 = { error: e_1_1 }; }
                finally {
                    try {
                        if (_c && !_c.done && (_a = _b.return)) _a.call(_b);
                    }
                    finally { if (e_1) throw e_1.error; }
                }
            }
        });
    };
    Subject.prototype.error = function (err) {
        var _this = this;
        errorContext(function () {
            _this._throwIfClosed();
            if (!_this.isStopped) {
                _this.hasError = _this.isStopped = true;
                _this.thrownError = err;
                var observers = _this.observers;
                while (observers.length) {
                    observers.shift().error(err);
                }
            }
        });
    };
    Subject.prototype.complete = function () {
        var _this = this;
        errorContext(function () {
            _this._throwIfClosed();
            if (!_this.isStopped) {
                _this.isStopped = true;
                var observers = _this.observers;
                while (observers.length) {
                    observers.shift().complete();
                }
            }
        });
    };
    Subject.prototype.unsubscribe = function () {
        this.isStopped = this.closed = true;
        this.observers = this.currentObservers = null;
    };
    Object.defineProperty(Subject.prototype, "observed", {
        get: function () {
            var _a;
            return ((_a = this.observers) === null || _a === void 0 ? void 0 : _a.length) > 0;
        },
        enumerable: false,
        configurable: true
    });
    Subject.prototype._trySubscribe = function (subscriber) {
        this._throwIfClosed();
        return _super.prototype._trySubscribe.call(this, subscriber);
    };
    Subject.prototype._subscribe = function (subscriber) {
        this._throwIfClosed();
        this._checkFinalizedStatuses(subscriber);
        return this._innerSubscribe(subscriber);
    };
    Subject.prototype._innerSubscribe = function (subscriber) {
        var _this = this;
        var _a = this, hasError = _a.hasError, isStopped = _a.isStopped, observers = _a.observers;
        if (hasError || isStopped) {
            return EMPTY_SUBSCRIPTION;
        }
        this.currentObservers = null;
        observers.push(subscriber);
        return new Subscription(function () {
            _this.currentObservers = null;
            arrRemove(observers, subscriber);
        });
    };
    Subject.prototype._checkFinalizedStatuses = function (subscriber) {
        var _a = this, hasError = _a.hasError, thrownError = _a.thrownError, isStopped = _a.isStopped;
        if (hasError) {
            subscriber.error(thrownError);
        }
        else if (isStopped) {
            subscriber.complete();
        }
    };
    Subject.prototype.asObservable = function () {
        var observable = new Observable();
        observable.source = this;
        return observable;
    };
    Subject.create = function (destination, source) {
        return new AnonymousSubject(destination, source);
    };
    return Subject;
}(Observable));
export { Subject };
var AnonymousSubject = (function (_super) {
    __extends(AnonymousSubject, _super);
    function AnonymousSubject(destination, source) {
        var _this = _super.call(this) || this;
        _this.destination = destination;
        _this.source = source;
        return _this;
    }
    AnonymousSubject.prototype.next = function (value) {
        var _a, _b;
        (_b = (_a = this.destination) === null || _a === void 0 ? void 0 : _a.next) === null || _b === void 0 ? void 0 : _b.call(_a, value);
    };
    AnonymousSubject.prototype.error = function (err) {
        var _a, _b;
        (_b = (_a = this.destination) === null || _a === void 0 ? void 0 : _a.error) === null || _b === void 0 ? void 0 : _b.call(_a, err);
    };
    AnonymousSubject.prototype.complete = function () {
        var _a, _b;
        (_b = (_a = this.destination) === null || _a === void 0 ? void 0 : _a.complete) === null || _b === void 0 ? void 0 : _b.call(_a);
    };
    AnonymousSubject.prototype._subscribe = function (subscriber) {
        var _a, _b;
        return (_b = (_a = this.source) === null || _a === void 0 ? void 0 : _a.subscribe(subscriber)) !== null && _b !== void 0 ? _b : EMPTY_SUBSCRIPTION;
    };
    return AnonymousSubject;
}(Subject));
export { AnonymousSubject };
//# sourceMappingURL=Subject.js.map
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