--- /dev/null
+import { Observable } from '../Observable';
+import { from } from './from';
+import { empty } from './empty';
+export function defer(observableFactory) {
+ return new Observable(subscriber => {
+ let input;
+ try {
+ input = observableFactory();
+ }
+ catch (err) {
+ subscriber.error(err);
+ return undefined;
+ }
+ const source = input ? from(input) : empty();
+ return source.subscribe(subscriber);
+ });
+}
+//# sourceMappingURL=defer.js.map
\ No newline at end of file