node_modules

node_modules/rxjs/_esm2015/internal/operators/defaultIfEmpty.js

@@ -0,0 +1,30 @@
+import { Subscriber } from '../Subscriber';
+export function defaultIfEmpty(defaultValue = null) {
+    return (source) => source.lift(new DefaultIfEmptyOperator(defaultValue));
+}
+class DefaultIfEmptyOperator {
+    constructor(defaultValue) {
+        this.defaultValue = defaultValue;
+    }
+    call(subscriber, source) {
+        return source.subscribe(new DefaultIfEmptySubscriber(subscriber, this.defaultValue));
+    }
+}
+class DefaultIfEmptySubscriber extends Subscriber {
+    constructor(destination, defaultValue) {
+        super(destination);
+        this.defaultValue = defaultValue;
+        this.isEmpty = true;
+    }
+    _next(value) {
+        this.isEmpty = false;
+        this.destination.next(value);
+    }
+    _complete() {
+        if (this.isEmpty) {
+            this.destination.next(this.defaultValue);
+        }
+        this.destination.complete();
+    }
+}
+//# sourceMappingURL=defaultIfEmpty.js.map