Fix suggestions

src/scripts/scrollHelper.js

@@ -98,13 +98,12 @@ function centerOnFocus(e, scrollSlider, horizontal) {
 function centerOnFocusHorizontal(e) {
     centerOnFocus(e, this, true);
 }
+
 function centerOnFocusVertical(e) {
     centerOnFocus(e, this, false);
 }
 
-export default {
-    getPosition: getPosition,
-    centerFocus: {
+export const centerFocus = {
     on: function (element, horizontal) {
         if (horizontal) {
             dom.addEventListener(element, 'focus', centerOnFocusHorizontal, {
@@ -131,7 +130,11 @@ export default {
             });
         }
     }
-    },
+}
+
+export default {
+    getPosition: getPosition,
+    centerFocus: centerFocus,
     toCenter: toCenter,
     toStart: toStart
 };