From 2ca0ccbe0c57acfcf5cc61ac2e6922577331a130 Mon Sep 17 00:00:00 2001
From: Daniel Imms <2193314+Tyriar@users.noreply.github.com>
Date: Tue, 15 Aug 2023 06:46:35 -0700
Subject: [PATCH] Workaround crash that can happen in Electron/Chromium

Part of microsoft/vscode#189753
---
 src/browser/renderer/dom/StyleSheet.ts | 13 +++++++++----
 src/common/Platform.ts                 |  1 +
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/src/browser/renderer/dom/StyleSheet.ts b/src/browser/renderer/dom/StyleSheet.ts
index 574615f46b..a4c52da468 100644
--- a/src/browser/renderer/dom/StyleSheet.ts
+++ b/src/browser/renderer/dom/StyleSheet.ts
@@ -3,6 +3,8 @@
  * @license MIT
  */
 
+import { isElectron } from 'common/Platform';
+
 export interface IStyleSheet {
   dispose: () => void;
   setCss: (value: string) => void;
@@ -37,9 +39,12 @@ const createStyleElement = (parent: HTMLElement): IStyleSheet => {
 };
 
 export const createStyle = (parent: HTMLElement): IStyleSheet => {
-  try {
-    return createCssStyleSheet(parent.ownerDocument);
-  } catch {
-    return createStyleElement(parent);
+  // The combination of the CSP workaround and the DOM renderer can trigger a crash in electron
+  // https://github.com/microsoft/vscode/issues/189753
+  if (!isElectron) {
+    try {
+      return createCssStyleSheet(parent.ownerDocument);
+    } catch { /* Fall through */ }
   }
+  return createStyleElement(parent);
 };
diff --git a/src/common/Platform.ts b/src/common/Platform.ts
index 41d8552e49..27dc97cfb6 100644
--- a/src/common/Platform.ts
+++ b/src/common/Platform.ts
@@ -17,6 +17,7 @@ export const isNode = (typeof navigator === 'undefined') ? true : false;
 const userAgent = (isNode) ? 'node' : navigator.userAgent;
 const platform = (isNode) ? 'node' : navigator.platform;
 
+export const isElectron = userAgent.includes('Electron');
 export const isFirefox = userAgent.includes('Firefox');
 export const isLegacyEdge = userAgent.includes('Edge');
 export const isSafari = /^((?!chrome|android).)*safari/i.test(userAgent);