From 6bf7b0055765c4f2011c9614753d6714dc09be65 Mon Sep 17 00:00:00 2001
From: toasted-nutbread <toasted-nutbread@users.noreply.github.com>
Date: Wed, 14 Feb 2024 22:26:29 -0500
Subject: Eslint rule updates (#673)

* Install unicorn

* Add rules

* Fix issues

* Install sonarjs

* Set up rules

* Fix issues

* Install eslint-plugin-import and fix import extensions

* Simplify permitted error names
---
 ext/js/dom/panel-element.js | 26 +++++++++++---------------
 1 file changed, 11 insertions(+), 15 deletions(-)

(limited to 'ext/js/dom/panel-element.js')

diff --git a/ext/js/dom/panel-element.js b/ext/js/dom/panel-element.js
index 9c1289d7..0f2801e6 100644
--- a/ext/js/dom/panel-element.js
+++ b/ext/js/dom/panel-element.js
@@ -89,16 +89,14 @@ export class PanelElement extends EventDispatcher {
      * @param {(details: import('core').EventArgument<import('panel-element').Events, TName>) => void} callback
      */
     on(eventName, callback) {
-        if (eventName === 'visibilityChanged') {
-            if (this._mutationObserver === null) {
-                this._visible = this.isVisible();
-                this._mutationObserver = new MutationObserver(this._onMutation.bind(this));
-                this._mutationObserver.observe(this._node, {
-                    attributes: true,
-                    attributeFilter: ['hidden'],
-                    attributeOldValue: true
-                });
-            }
+        if (eventName === 'visibilityChanged' && this._mutationObserver === null) {
+            this._visible = this.isVisible();
+            this._mutationObserver = new MutationObserver(this._onMutation.bind(this));
+            this._mutationObserver.observe(this._node, {
+                attributes: true,
+                attributeFilter: ['hidden'],
+                attributeOldValue: true
+            });
         }
         super.on(eventName, callback);
     }
@@ -111,11 +109,9 @@ export class PanelElement extends EventDispatcher {
      */
     off(eventName, callback) {
         const result = super.off(eventName, callback);
-        if (eventName === 'visibilityChanged' && !this.hasListeners(eventName)) {
-            if (this._mutationObserver !== null) {
-                this._mutationObserver.disconnect();
-                this._mutationObserver = null;
-            }
+        if (eventName === 'visibilityChanged' && !this.hasListeners(eventName) && this._mutationObserver !== null) {
+            this._mutationObserver.disconnect();
+            this._mutationObserver = null;
         }
         return result;
     }
-- 
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