throwIfEmpty.js 721 B

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  1. import { EmptyError } from '../util/EmptyError';
  2. import { operate } from '../util/lift';
  3. import { createOperatorSubscriber } from './OperatorSubscriber';
  4. export function throwIfEmpty(errorFactory) {
  5. if (errorFactory === void 0) { errorFactory = defaultErrorFactory; }
  6. return operate(function (source, subscriber) {
  7. var hasValue = false;
  8. source.subscribe(createOperatorSubscriber(subscriber, function (value) {
  9. hasValue = true;
  10. subscriber.next(value);
  11. }, function () { return (hasValue ? subscriber.complete() : subscriber.error(errorFactory())); }));
  12. });
  13. }
  14. function defaultErrorFactory() {
  15. return new EmptyError();
  16. }
  17. //# sourceMappingURL=throwIfEmpty.js.map