From 22a97d916fc6ecab1200b0ffea18cf2d5c9923d4 Mon Sep 17 00:00:00 2001
From: siikamiika <siikamiika@users.noreply.github.com>
Date: Sun, 5 Apr 2020 20:42:23 +0300
Subject: fix NOT (a OR B) to NOT (a AND b)

---
 ext/mixed/js/core.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ext/mixed/js/core.js b/ext/mixed/js/core.js
index 6d0a5f0e..db7fc69b 100644
--- a/ext/mixed/js/core.js
+++ b/ext/mixed/js/core.js
@@ -319,7 +319,7 @@ const yomichan = (() => {
 
         getTemporaryListenerResult(eventHandler, userCallback, timeout=null) {
             if (!(
-                typeof eventHandler.addListener === 'function' ||
+                typeof eventHandler.addListener === 'function' &&
                 typeof eventHandler.removeListener === 'function'
             )) {
                 throw new Error('Event handler type not supported');
-- 
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