diff --git a/lib/hammerUtil.js b/lib/hammerUtil.js
index caafb7dec..9a8f48928 100644
--- a/lib/hammerUtil.js
+++ b/lib/hammerUtil.js
@@ -1,5 +1,3 @@
-var Hammer = require('./module/hammer');
-
 /**
  * Register a touch event, taking place before a gesture
  * @param {Hammer} hammer       A hammer instance
diff --git a/lib/util.js b/lib/util.js
index 5bef259f3..eb166694f 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -141,7 +141,7 @@ exports.fillIfDefined = function (a, b, allowDeletion = false) {
  * @param {... Object} b
  * @return {Object} a
  */
-exports.protoExtend = function (a, b) {
+exports.protoExtend = function (a, b) {  // eslint-disable-line no-unused-vars
   for (var i = 1; i < arguments.length; i++) {
     var other = arguments[i];
     for (var prop in other) {
@@ -158,7 +158,7 @@ exports.protoExtend = function (a, b) {
  * @param {... Object} b
  * @return {Object} a
  */
-exports.extend = function (a, b) {
+exports.extend = function (a, b) {  // eslint-disable-line no-unused-vars
   for (var i = 1; i < arguments.length; i++) {
     var other = arguments[i];
     for (var prop in other) {
@@ -178,7 +178,7 @@ exports.extend = function (a, b) {
  * @param {Object} b
  * @return {Object} a
  */
-exports.selectiveExtend = function (props, a, b) {
+exports.selectiveExtend = function (props, a, b) {  // eslint-disable-line no-unused-vars
   if (!Array.isArray(props)) {
     throw new Error('Array with property names expected as first argument');
   }
@@ -951,15 +951,16 @@ exports.hexToRGB = function (hex) {
  * @returns {*}
  */
 exports.overrideOpacity = function (color, opacity) {
+  var rgb;
   if (color.indexOf("rgba") != -1) {
     return color;
   }
   else if (color.indexOf("rgb") != -1) {
-    var rgb = color.substr(color.indexOf("(") + 1).replace(")", "").split(",");
+    rgb = color.substr(color.indexOf("(") + 1).replace(")", "").split(",");
     return "rgba(" + rgb[0] + "," + rgb[1] + "," + rgb[2] + "," + opacity + ")"
   }
   else {
-    var rgb = exports.hexToRGB(color);
+    rgb = exports.hexToRGB(color);
     if (rgb == null) {
       return color;
     }
@@ -967,7 +968,7 @@ exports.overrideOpacity = function (color, opacity) {
       return "rgba(" + rgb.r + "," + rgb.g + "," + rgb.b + "," + opacity + ")"
     }
   }
-}
+};
 
 /**
  *
@@ -1461,7 +1462,7 @@ exports.binarySearchValue = function (orderedItems, target, field, sidePreferenc
   var high = orderedItems.length - 1;
   var prevValue, value, nextValue, middle;
 
-  var comparator = comparator != undefined ? comparator : function (a, b) {
+  comparator = comparator != undefined ? comparator : function (a, b) {
     return a == b ? 0 : a < b ? -1 : 1
   };