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							- import { SafeSubscriber, Subscriber } from './Subscriber';
 
- import { isSubscription } from './Subscription';
 
- import { observable as Symbol_observable } from './symbol/observable';
 
- import { pipeFromArray } from './util/pipe';
 
- import { config } from './config';
 
- import { isFunction } from './util/isFunction';
 
- import { errorContext } from './util/errorContext';
 
- var Observable = (function () {
 
-     function Observable(subscribe) {
 
-         if (subscribe) {
 
-             this._subscribe = subscribe;
 
-         }
 
-     }
 
-     Observable.prototype.lift = function (operator) {
 
-         var observable = new Observable();
 
-         observable.source = this;
 
-         observable.operator = operator;
 
-         return observable;
 
-     };
 
-     Observable.prototype.subscribe = function (observerOrNext, error, complete) {
 
-         var _this = this;
 
-         var subscriber = isSubscriber(observerOrNext) ? observerOrNext : new SafeSubscriber(observerOrNext, error, complete);
 
-         errorContext(function () {
 
-             var _a = _this, operator = _a.operator, source = _a.source;
 
-             subscriber.add(operator
 
-                 ?
 
-                     operator.call(subscriber, source)
 
-                 : source
 
-                     ?
 
-                         _this._subscribe(subscriber)
 
-                     :
 
-                         _this._trySubscribe(subscriber));
 
-         });
 
-         return subscriber;
 
-     };
 
-     Observable.prototype._trySubscribe = function (sink) {
 
-         try {
 
-             return this._subscribe(sink);
 
-         }
 
-         catch (err) {
 
-             sink.error(err);
 
-         }
 
-     };
 
-     Observable.prototype.forEach = function (next, promiseCtor) {
 
-         var _this = this;
 
-         promiseCtor = getPromiseCtor(promiseCtor);
 
-         return new promiseCtor(function (resolve, reject) {
 
-             var subscriber = new SafeSubscriber({
 
-                 next: function (value) {
 
-                     try {
 
-                         next(value);
 
-                     }
 
-                     catch (err) {
 
-                         reject(err);
 
-                         subscriber.unsubscribe();
 
-                     }
 
-                 },
 
-                 error: reject,
 
-                 complete: resolve,
 
-             });
 
-             _this.subscribe(subscriber);
 
-         });
 
-     };
 
-     Observable.prototype._subscribe = function (subscriber) {
 
-         var _a;
 
-         return (_a = this.source) === null || _a === void 0 ? void 0 : _a.subscribe(subscriber);
 
-     };
 
-     Observable.prototype[Symbol_observable] = function () {
 
-         return this;
 
-     };
 
-     Observable.prototype.pipe = function () {
 
-         var operations = [];
 
-         for (var _i = 0; _i < arguments.length; _i++) {
 
-             operations[_i] = arguments[_i];
 
-         }
 
-         return pipeFromArray(operations)(this);
 
-     };
 
-     Observable.prototype.toPromise = function (promiseCtor) {
 
-         var _this = this;
 
-         promiseCtor = getPromiseCtor(promiseCtor);
 
-         return new promiseCtor(function (resolve, reject) {
 
-             var value;
 
-             _this.subscribe(function (x) { return (value = x); }, function (err) { return reject(err); }, function () { return resolve(value); });
 
-         });
 
-     };
 
-     Observable.create = function (subscribe) {
 
-         return new Observable(subscribe);
 
-     };
 
-     return Observable;
 
- }());
 
- export { Observable };
 
- function getPromiseCtor(promiseCtor) {
 
-     var _a;
 
-     return (_a = promiseCtor !== null && promiseCtor !== void 0 ? promiseCtor : config.Promise) !== null && _a !== void 0 ? _a : Promise;
 
- }
 
- function isObserver(value) {
 
-     return value && isFunction(value.next) && isFunction(value.error) && isFunction(value.complete);
 
- }
 
- function isSubscriber(value) {
 
-     return (value && value instanceof Subscriber) || (isObserver(value) && isSubscription(value));
 
- }
 
- //# sourceMappingURL=Observable.js.map
 
 
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