@reactivex/rxjs
Version:
Reactive Extensions for modern JavaScript
54 lines • 2.1 kB
JavaScript
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
return extendStatics(d, b);
}
return function (d, b) {
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
import { SimpleOuterSubscriber, innerSubscribe, SimpleInnerSubscriber } from '../innerSubscribe';
export function exhaust() {
return function (source) { return source.lift(new SwitchFirstOperator()); };
}
var SwitchFirstOperator = (function () {
function SwitchFirstOperator() {
}
SwitchFirstOperator.prototype.call = function (subscriber, source) {
return source.subscribe(new SwitchFirstSubscriber(subscriber));
};
return SwitchFirstOperator;
}());
var SwitchFirstSubscriber = (function (_super) {
__extends(SwitchFirstSubscriber, _super);
function SwitchFirstSubscriber(destination) {
var _this = _super.call(this, destination) || this;
_this.hasCompleted = false;
_this.hasSubscription = false;
return _this;
}
SwitchFirstSubscriber.prototype._next = function (value) {
if (!this.hasSubscription) {
this.hasSubscription = true;
this.add(innerSubscribe(value, new SimpleInnerSubscriber(this)));
}
};
SwitchFirstSubscriber.prototype._complete = function () {
this.hasCompleted = true;
if (!this.hasSubscription) {
this.destination.complete();
}
};
SwitchFirstSubscriber.prototype.notifyComplete = function () {
this.hasSubscription = false;
if (this.hasCompleted) {
this.destination.complete();
}
};
return SwitchFirstSubscriber;
}(SimpleOuterSubscriber));
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