From 08fce6208ed8bede70fa9291eac8412f20ac56b5 Mon Sep 17 00:00:00 2001
From: Luna Ruan <lunaris.ruan@gmail.com>
Date: Fri, 11 Feb 2022 14:36:36 -0500
Subject: [PATCH] Gracefully handle empty "xstyle" prop values (Part 2)
 (#23279)

#23190 misses if entry is undefined or null. This fixes this issue.
---
 .../src/backend/StyleX/__tests__/utils-test.js             | 7 +++++++
 packages/react-devtools-shared/src/backend/StyleX/utils.js | 4 ++++
 2 files changed, 11 insertions(+)

diff --git a/packages/react-devtools-shared/src/backend/StyleX/__tests__/utils-test.js b/packages/react-devtools-shared/src/backend/StyleX/__tests__/utils-test.js
index d0b8742a82f81..6dffbb52101aa 100644
--- a/packages/react-devtools-shared/src/backend/StyleX/__tests__/utils-test.js
+++ b/packages/react-devtools-shared/src/backend/StyleX/__tests__/utils-test.js
@@ -54,6 +54,13 @@ describe('Stylex plugin utils', () => {
         "sources": Array [],
       }
     `);
+
+    expect(getStyleXData([undefined])).toMatchInlineSnapshot(`
+      Object {
+        "resolvedStyles": Object {},
+        "sources": Array [],
+      }
+    `);
   });
 
   it('should support simple style objects', () => {
diff --git a/packages/react-devtools-shared/src/backend/StyleX/utils.js b/packages/react-devtools-shared/src/backend/StyleX/utils.js
index 230e08360259b..68bda23a2262c 100644
--- a/packages/react-devtools-shared/src/backend/StyleX/utils.js
+++ b/packages/react-devtools-shared/src/backend/StyleX/utils.js
@@ -35,6 +35,10 @@ export function crawlData(
 
   if (isArray(data)) {
     data.forEach(entry => {
+      if (entry == null) {
+        return;
+      }
+
       if (isArray(entry)) {
         crawlData(entry, sources, resolvedStyles);
       } else {