From e1d8f5155c0db5ffdc130c9aa0f14efac02dfdfb Mon Sep 17 00:00:00 2001
From: rebornix <penn.lv@gmail.com>
Date: Tue, 12 May 2020 10:03:42 -0700
Subject: [PATCH] Fix #97498. Fallback to default value for translate3d

---
 src/vs/base/browser/ui/list/listView.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/vs/base/browser/ui/list/listView.ts b/src/vs/base/browser/ui/list/listView.ts
index cea7064b563..b76361c2695 100644
--- a/src/vs/base/browser/ui/list/listView.ts
+++ b/src/vs/base/browser/ui/list/listView.ts
@@ -278,7 +278,8 @@ export class ListView<T> implements ISpliceable<T>, IDisposable {
 		this.rowsContainer = document.createElement('div');
 		this.rowsContainer.className = 'monaco-list-rows';
 
-		if (options.transformOptimization) {
+		const transformOptimization = getOrDefault(options, o => o.transformOptimization, DefaultOptions.transformOptimization);
+		if (transformOptimization) {
 			this.rowsContainer.style.transform = 'translate3d(0px, 0px, 0px)';
 		}