From f4b1ea8a90df37071a7245d4dbae39814b81415c Mon Sep 17 00:00:00 2001
From: eight <eight04@gmail.com>
Date: Wed, 11 Sep 2019 15:32:34 +0800
Subject: [PATCH] Change: check style.sheet instead of getComputedStyle (#779)

---
 content/apply.js | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/content/apply.js b/content/apply.js
index ded671d1..89c3a540 100644
--- a/content/apply.js
+++ b/content/apply.js
@@ -139,15 +139,11 @@ const APPLY = (() => {
         }}));
 
         function checkStyleApplied() {
-          // FIXME: this is not reliable
-          // https://bugzilla.mozilla.org/show_bug.cgi?id=1579345
           const style = document.createElement('style');
-          style.textContent = ':root{--stylus-applied:1}';
           document.documentElement.appendChild(style);
-          const applied = getComputedStyle(document.documentElement)
-            .getPropertyValue('--stylus-applied');
+          const applied = Boolean(style.sheet);
           style.remove();
-          return Boolean(applied);
+          return applied;
         }
       };
       const code = `(${scriptContent})(${JSON.stringify(EVENT_NAME)})`;