So siehts ganz gut aus !

node_modules/moment/src/lib/utils/defaults.js

@@ -0,0 +1,10 @@
+// Pick the first defined of two or three arguments.
+export default function defaults(a, b, c) {
+    if (a != null) {
+        return a;
+    }
+    if (b != null) {
+        return b;
+    }
+    return c;
+}