From 1f4e63b07eec2477dc27d146bf2f3b8fc20a0175 Mon Sep 17 00:00:00 2001
From: Artem Zhivoderov <32125472+azhiv@users.noreply.github.com>
Date: Fri, 11 Feb 2022 17:21:59 +0300
Subject: [PATCH] Return falsy properties values (#157)

Previously the proxy only returned truthy values for the properties
and `undefined` otherwise.
- Fix this to return the original values
---
 src/utils/object-tree-node.ts       |  2 +-
 test/utils/object-tree-node.test.ts | 12 ++++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/utils/object-tree-node.ts b/src/utils/object-tree-node.ts
index 03ffb50..5951d11 100644
--- a/src/utils/object-tree-node.ts
+++ b/src/utils/object-tree-node.ts
@@ -42,7 +42,7 @@ const objectProxyHandler = {
       return childValue;
     } else if (node.content) {
       const nodeContent = node.content;
-      if (node.safeGet(nodeContent, key)) {
+      if (node.safeGet(nodeContent, key) !== undefined) {
         return node.safeGet(nodeContent, key);
       }
     }
diff --git a/test/utils/object-tree-node.test.ts b/test/utils/object-tree-node.test.ts
index 8c9f5c7..f5f972a 100644
--- a/test/utils/object-tree-node.test.ts
+++ b/test/utils/object-tree-node.test.ts
@@ -69,4 +69,16 @@ describe('Unit | Utility | object tree node', () => {
     expect(result.changes).toEqual({});
     expect(result.proxy.foo).toBe('foo');
   });
+
+  it('it returns falsy values', () => {
+    const result = new ObjectTreeNode({}, { name: '', flag: false, count: 0, ref: null });
+
+    expect(result.proxy.name).toBe('');
+    expect(result.proxy.flag).toBe(false);
+    expect(result.proxy.count).toBe(0);
+    expect(result.proxy.ref).toBe(null);
+
+    // backward compatibility - unknown properties should still resolve to undefined
+    expect(result.proxy.nonExistentProperty).toBe(undefined);
+  });
 });