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node_modules/rxjs/_esm5/internal/observable/defer.js

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+/** PURE_IMPORTS_START _Observable,_from,_empty PURE_IMPORTS_END */
+import { Observable } from '../Observable';
+import { from } from './from';
+import { empty } from './empty';
+export function defer(observableFactory) {
+    return new Observable(function (subscriber) {
+        var input;
+        try {
+            input = observableFactory();
+        }
+        catch (err) {
+            subscriber.error(err);
+            return undefined;
+        }
+        var source = input ? from(input) : empty();
+        return source.subscribe(subscriber);
+    });
+}
+//# sourceMappingURL=defer.js.map