From 09d82835993b16cd5dc8350c03627f9573354a25 Mon Sep 17 00:00:00 2001
From: mofeiZ <34200447+mofeiZ@users.noreply.github.com>
Date: Wed, 18 Sep 2024 14:39:04 -0400
Subject: [PATCH] [ez] Rewrite optional chaining and nullish coalescing syntax
 (#30982)

Rewrite `containerInfo?.ownerDocument?.defaultView ?? window` to instead
use a ternary.

This changes the compilation output (see [bundle changes from
#30951](https://github.com/facebook/react/commit/d65fb06955e9f32e6a40d1c7177d77893dff95b9)).
```js
// compilation of containerInfo?.ownerDocument?.defaultView ?? window
var $jscomp$optchain$tmpm1756096108$1, $jscomp$nullish$tmp0;
containerInfo =
  null !=
  ($jscomp$nullish$tmp0 =
    null == containerInfo
      ? void 0
      : null ==
          ($jscomp$optchain$tmpm1756096108$1 = containerInfo.ownerDocument)
        ? void 0
        : $jscomp$optchain$tmpm1756096108$1.defaultView)
    ? $jscomp$nullish$tmp0
    : window;

// compilation of ternary expression
containerInfo =
  null != containerInfo &&
  null != containerInfo.ownerDocument &&
  null != containerInfo.ownerDocument.defaultView
    ? containerInfo.ownerDocument.defaultView
    : window;
```

This also reduces the number of no-op bundle syncs for Meta. Note that
Closure compiler's `jscomp$optchain$tmp<HASH>` identifiers change when
we rebuild (likely due to version number changes). See
[workflow](https://github.com/facebook/react/actions/runs/10891164281/job/30221518374)
for a PR that was synced despite making no changes to the runtime.
---
 .../react-dom-bindings/src/client/ReactInputSelection.js   | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/packages/react-dom-bindings/src/client/ReactInputSelection.js b/packages/react-dom-bindings/src/client/ReactInputSelection.js
index 0f3dfe11cd9f9..36cdc554f0f44 100644
--- a/packages/react-dom-bindings/src/client/ReactInputSelection.js
+++ b/packages/react-dom-bindings/src/client/ReactInputSelection.js
@@ -57,7 +57,12 @@ function isSameOriginFrame(iframe) {
 }
 
 function getActiveElementDeep(containerInfo) {
-  let win = containerInfo?.ownerDocument?.defaultView ?? window;
+  let win =
+    containerInfo != null &&
+    containerInfo.ownerDocument != null &&
+    containerInfo.ownerDocument.defaultView != null
+      ? containerInfo.ownerDocument.defaultView
+      : window;
   let element = getActiveElement(win.document);
   while (element instanceof win.HTMLIFrameElement) {
     if (isSameOriginFrame(element)) {