diff --git a/core/.eslintrc.json b/core/.eslintrc.json
index 9883d328e663259517fe83b0fefc1faaafcf976e..eb16a6430dcb12c11320c56bfa50111984b6a43d 100644
--- a/core/.eslintrc.json
+++ b/core/.eslintrc.json
@@ -36,6 +36,7 @@
       "requireReturn": false
     }],
     "brace-style": ["error", "stroustrup"],
-    "no-unused-vars": ["warn"]
+    "no-unused-vars": ["warn"],
+    "operator-linebreak": ["error", "after"]
   }
 }
diff --git a/core/.eslintrc.passing.json b/core/.eslintrc.passing.json
index 3e526794834e86f70c3f06a170c90aa2619bd5ae..5e4223224ee661ab68ae85429516e78c9b942e62 100644
--- a/core/.eslintrc.passing.json
+++ b/core/.eslintrc.passing.json
@@ -8,7 +8,6 @@
     "max-len": "off",
     "default-case": "off",
     "prefer-destructuring": "off",
-    "operator-linebreak": "off",
     "react/no-this-in-sfc": "off",
     "react/destructuring-assignment": "off",
     "import/named": "off"
diff --git a/core/misc/ajax.es6.js b/core/misc/ajax.es6.js
index 232c224d9612c8f9538f2b182a756e0ed097be08..fe433f928a73fc6f537d8be05bb7fc0bfb13eeae 100644
--- a/core/misc/ajax.es6.js
+++ b/core/misc/ajax.es6.js
@@ -1040,9 +1040,9 @@
         $newContent[i].nodeName === '#comment' ||
         ($newContent[i].nodeName === '#text' && /^(\s|\n|\r)*$/.test($newContent[i].textContent))
       ),
-    ).length > 1
-      ? Drupal.theme('ajaxWrapperMultipleRootElements', $newContent)
-      : $newContent
+    ).length > 1 ?
+      Drupal.theme('ajaxWrapperMultipleRootElements', $newContent) :
+      $newContent
   );
 
   /**
diff --git a/core/misc/tabledrag.es6.js b/core/misc/tabledrag.es6.js
index 6105aeeae6e63a7f37587d48d7453b5028a1ea9b..2010624ee6af8c1a8bf41e8a51459e7c38cba9a3 100644
--- a/core/misc/tabledrag.es6.js
+++ b/core/misc/tabledrag.es6.js
@@ -702,8 +702,10 @@
         // Stop any current scrolling.
         clearInterval(self.scrollInterval);
         // Continue scrolling if the mouse has moved in the scroll direction.
-        if ((scrollAmount > 0 && self.rowObject.direction === 'down')
-          || (scrollAmount < 0 && self.rowObject.direction === 'up')) {
+        if (
+          (scrollAmount > 0 && self.rowObject.direction === 'down') ||
+          (scrollAmount < 0 && self.rowObject.direction === 'up')
+        ) {
           self.setScroll(scrollAmount);
         }
 
@@ -1129,8 +1131,10 @@
       self.checkScroll(self.currentPointerCoords.y);
       const aboveTable = self.scrollY > self.table.topY;
       const belowTable = self.scrollY + self.windowHeight < self.table.bottomY;
-      if ((scrollAmount > 0 && belowTable)
-        || (scrollAmount < 0 && aboveTable)) {
+      if (
+        (scrollAmount > 0 && belowTable) ||
+        (scrollAmount < 0 && aboveTable)
+      ) {
         window.scrollBy(0, scrollAmount);
       }
     }, this.scrollSettings.interval);