| import { EmptyError } from '../util/EmptyError'; |
| import { Subscriber } from '../Subscriber'; |
| export function throwIfEmpty(errorFactory = defaultErrorFactory) { |
| return (source) => { |
| return source.lift(new ThrowIfEmptyOperator(errorFactory)); |
| }; |
| } |
| class ThrowIfEmptyOperator { |
| constructor(errorFactory) { |
| this.errorFactory = errorFactory; |
| } |
| call(subscriber, source) { |
| return source.subscribe(new ThrowIfEmptySubscriber(subscriber, this.errorFactory)); |
| } |
| } |
| class ThrowIfEmptySubscriber extends Subscriber { |
| constructor(destination, errorFactory) { |
| super(destination); |
| this.errorFactory = errorFactory; |
| this.hasValue = false; |
| } |
| _next(value) { |
| this.hasValue = true; |
| this.destination.next(value); |
| } |
| _complete() { |
| if (!this.hasValue) { |
| let err; |
| try { |
| err = this.errorFactory(); |
| } |
| catch (e) { |
| err = e; |
| } |
| this.destination.error(err); |
| } |
| else { |
| return this.destination.complete(); |
| } |
| } |
| } |
| function defaultErrorFactory() { |
| return new EmptyError(); |
| } |
| //# sourceMappingURL=throwIfEmpty.js.map |