Initial project import

node_modules/rxjs/dist/esm/internal/operators/defaultIfEmpty.js

@@ -0,0 +1,17 @@
+import { operate } from '../util/lift';
+import { createOperatorSubscriber } from './OperatorSubscriber';
+export function defaultIfEmpty(defaultValue) {
+    return operate((source, subscriber) => {
+        let hasValue = false;
+        source.subscribe(createOperatorSubscriber(subscriber, (value) => {
+            hasValue = true;
+            subscriber.next(value);
+        }, () => {
+            if (!hasValue) {
+                subscriber.next(defaultValue);
+            }
+            subscriber.complete();
+        }));
+    });
+}
+//# sourceMappingURL=defaultIfEmpty.js.map