From 68648ee6843d4e2fd5ae14cdf469ab760ff0f16f Mon Sep 17 00:00:00 2001
From: Andrew Kushnir <akushnir@google.com>
Date: Tue, 26 Sep 2023 15:31:44 -0700
Subject: [PATCH] refactor(core): avoid an empty array allocation during
 hydration (#51917)

This commit updates hydration runtime code to avoid creating an empty array when we can avoid it. Instead, we just check whether the field is `null` directly (without using nullish coalescing).

PR Close #51917
---
 packages/core/src/hydration/views.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/core/src/hydration/views.ts b/packages/core/src/hydration/views.ts
index 7b033ec7b9c..89191f701e6 100644
--- a/packages/core/src/hydration/views.ts
+++ b/packages/core/src/hydration/views.ts
@@ -67,8 +67,8 @@ let _findMatchingDehydratedViewImpl: typeof findMatchingDehydratedViewImpl =
  */
 function findMatchingDehydratedViewImpl(
     lContainer: LContainer, template: string|null): DehydratedContainerView|null {
-  const views = lContainer[DEHYDRATED_VIEWS] ?? [];
-  if (!template || views.length === 0) {
+  const views = lContainer[DEHYDRATED_VIEWS];
+  if (!template || views === null || views.length === 0) {
     return null;
   }
   const view = views[0];