fix(core): wrap null as NSNull when wrapping primitives

Author: triniwiz

packages/firebase-core/utils.ts

@@ -38,7 +38,10 @@ export function serialize(data: any, wrapPrimitives: boolean = false): any {
 				}
 
 				if (!data) {
-					return NSNull.new();
+					if (wrapPrimitives) {
+						return NSNull.new();
+					}
+					return null;
 				}
 
 				if (Array.isArray(data)) {
@@ -54,7 +57,10 @@ export function serialize(data: any, wrapPrimitives: boolean = false): any {
 			}
 
 			default:
-				return NSNull.new();
+				if (wrapPrimitives) {
+					return NSNull.new();
+				}
+				return null;
 		}
 	}
 

packages/firebase-database/index.ios.ts

@@ -16,7 +16,7 @@ Object.defineProperty(fb, 'database', {
 	writable: false,
 });
 
-function serializeItems(data, wrapPrimitives = false) {
+function serializeItems(data, wrapPrimitives = true) {
 	if (data instanceof ServerValue) {
 		return data.native;
 	}