From 5565ddd88c6350f90e1031be4ce0d6089ac73a57 Mon Sep 17 00:00:00 2001
From: Johannes Rieken <johannes.rieken@gmail.com>
Date: Wed, 19 Jun 2019 15:58:46 +0200
Subject: [PATCH] update style.textContent instead of calling insertRule,
 #75061

this change makes style changes visible to the mutation observer
---
 src/vs/base/browser/dom.ts | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/vs/base/browser/dom.ts b/src/vs/base/browser/dom.ts
index 64fd5661495bb..265d69f85a261 100644
--- a/src/vs/base/browser/dom.ts
+++ b/src/vs/base/browser/dom.ts
@@ -804,8 +804,7 @@ export function createCSSRule(selector: string, cssText: string, style: HTMLStyl
 	if (!style || !cssText) {
 		return;
 	}
-
-	(<CSSStyleSheet>style.sheet).insertRule(selector + '{' + cssText + '}', 0);
+	style.textContent = `${selector}{${cssText}}\n${style.textContent}`;
 }
 
 export function removeCSSRulesContainingSelector(ruleName: string, style: HTMLStyleElement = getSharedStyleSheet()): void {