diff --git a/core/.eslintrc.passing.json b/core/.eslintrc.passing.json
index b013f1445a005f5455306b0a3276ae8a50d99ace..44a3b11cdab2fef61bdccc723461cd0064ebec78 100644
--- a/core/.eslintrc.passing.json
+++ b/core/.eslintrc.passing.json
@@ -14,7 +14,6 @@
     "no-lonely-if": "off",
     "no-empty": "off",
     "no-continue": "off",
-    "no-confusing-arrow": "off",
     "newline-per-chained-call": "off",
     "new-cap": "off",
     "max-len": "off",
diff --git a/core/modules/filter/filter.admin.es6.js b/core/modules/filter/filter.admin.es6.js
index e109fab26a888dc0f542ee93e3cd8ba9aad93044..7c69fe07c45854df24029cbdb21dc3d8617fba09 100644
--- a/core/modules/filter/filter.admin.es6.js
+++ b/core/modules/filter/filter.admin.es6.js
@@ -52,7 +52,7 @@
 
         // Attach summary for configurable filters (only for screen readers).
         if (filterSettingsTab) {
-          filterSettingsTab.details.drupalSetSummary(tabContext => $checkbox.is(':checked') ? Drupal.t('Enabled') : Drupal.t('Disabled'));
+          filterSettingsTab.details.drupalSetSummary(() => ($checkbox.is(':checked') ? Drupal.t('Enabled') : Drupal.t('Disabled')));
         }
 
         // Trigger our bound click handler to update elements to initial state.
diff --git a/core/modules/filter/filter.admin.js b/core/modules/filter/filter.admin.js
index 857a7046ad847a0ea301290507182c6a20416901..68167622fe83e95bfaccc08d62b12c6e515e3d44 100644
--- a/core/modules/filter/filter.admin.js
+++ b/core/modules/filter/filter.admin.js
@@ -38,7 +38,7 @@
         });
 
         if (filterSettingsTab) {
-          filterSettingsTab.details.drupalSetSummary(function (tabContext) {
+          filterSettingsTab.details.drupalSetSummary(function () {
             return $checkbox.is(':checked') ? Drupal.t('Enabled') : Drupal.t('Disabled');
           });
         }
diff --git a/core/modules/system/js/system.date.es6.js b/core/modules/system/js/system.date.es6.js
index 962dde39c3b6dfb32e8a5a38efaaa229679fbb27..7686d2295752d5258b2abce032882d016bbfb806 100644
--- a/core/modules/system/js/system.date.es6.js
+++ b/core/modules/system/js/system.date.es6.js
@@ -34,7 +34,7 @@
        */
       function dateFormatHandler(e) {
         const baseValue = $(e.target).val() || '';
-        const dateString = baseValue.replace(/\\?(.?)/gi, (key, value) => dateFormats[key] ? dateFormats[key] : value);
+        const dateString = baseValue.replace(/\\?(.?)/gi, (key, value) => (dateFormats[key] ? dateFormats[key] : value));
 
         $preview.html(dateString);
         $target.toggleClass('js-hide', !dateString.length);