diff --git a/src/ol/array.js b/src/ol/array.js
index c97eaaaee1..5a59474fda 100644
--- a/src/ol/array.js
+++ b/src/ol/array.js
@@ -178,11 +178,11 @@ ol.array.remove = function(arr, obj) {
 /**
  * @param {Array<VALUE>} arr  The array to modify.
  * @param {?function(this:THISVAL, VALUE, number, ?) : boolean} func The function to compare.
- * @param {THISVAL=} thisArg Optional this argument for the function.
+ * @param {THISVAL=} opt_thisArg Optional this argument for the function.
  * @template VALUE,THISVAL
  * @return {VALUE} If the element was removed.
  */
-ol.array.find = function(arr, func, thisArg) {
+ol.array.find = function(arr, func, opt_thisArg) {
   if (typeof func !== 'function') {
     throw new TypeError('func must be a function');
   }
@@ -192,9 +192,50 @@ ol.array.find = function(arr, func, thisArg) {
 
   for (var i = 0; i < length; i++) {
     value = list[i];
-    if (func.call(thisArg, value, i, list)) {
+    if (func.call(opt_thisArg, value, i, list)) {
       return value;
     }
   }
   return null;
 }
+
+
+/**
+* @param {goog.array.ArrayLike} arr1 The first array to compare.
+* @param {goog.array.ArrayLike} arr2 The second array to compare.
+* @param {Function=} opt_equalsFn Optional comparison function.
+* @return {boolean} Whether the two arrays are equal.
+ */
+ol.array.equals = function(arr1, arr2, opt_equalsFn) {
+  if (!goog.isArrayLike(arr1) || !goog.isArrayLike(arr2) || arr1.length !== arr2.length) {
+    return false;
+  }
+  var length = arr1.length;
+  var equalsFn = opt_equalsFn !== undefined ? opt_equalsFn : function(a, b) {
+    return a === b;
+  };
+  for (var i = 0; i < length; i++) {
+    if (!equalsFn(arr1[i], arr2[i])) {
+      return false;
+    }
+  }
+  return true;
+}
+
+ol.array.stableSort = function(arr, compareFnc) {
+  var length = arr.length;
+  var tmp = Array(arr.length);
+  var i;
+  for (i = 0; i < length; i++) {
+    tmp[i] = {index: i, value: arr[i]};
+  }
+  var compare = compareFnc || function(a, b) {
+    return a > b ? 1 : a < b ? -1 : 0;
+  };
+  tmp.sort(function(a, b) {
+    return compare(a.value, b.value) || a.index - b.index;
+  });
+  for (i = 0; i < arr.length; i++) {
+    arr[i] = tmp[i].value;
+  }
+}
diff --git a/src/ol/interaction/modifyinteraction.js b/src/ol/interaction/modifyinteraction.js
index e840dedcea..ea108929a2 100644
--- a/src/ol/interaction/modifyinteraction.js
+++ b/src/ol/interaction/modifyinteraction.js
@@ -1,7 +1,6 @@
 goog.provide('ol.interaction.Modify');
 goog.provide('ol.interaction.ModifyEvent');
 
-goog.require('goog.array');
 goog.require('goog.asserts');
 goog.require('goog.events');
 goog.require('goog.events.Event');
@@ -14,6 +13,7 @@ goog.require('ol.Feature');
 goog.require('ol.MapBrowserEvent.EventType');
 goog.require('ol.MapBrowserPointerEvent');
 goog.require('ol.ViewHint');
+goog.require('ol.array');
 goog.require('ol.coordinate');
 goog.require('ol.events.condition');
 goog.require('ol.extent');
@@ -999,7 +999,7 @@ ol.interaction.Modify.prototype.updateSegmentIndices_ = function(
   this.rBush_.forEachInExtent(geometry.getExtent(), function(segmentDataMatch) {
     if (segmentDataMatch.geometry === geometry &&
         (depth === undefined || segmentDataMatch.depth === undefined ||
-        goog.array.equals(
+        ol.array.equals(
             /** @type {null|{length: number}} */ (segmentDataMatch.depth),
             depth)) &&
         segmentDataMatch.index > index) {
diff --git a/src/ol/render/canvas/canvasimmediate.js b/src/ol/render/canvas/canvasimmediate.js
index 9003160ae6..cabb1c0129 100644
--- a/src/ol/render/canvas/canvasimmediate.js
+++ b/src/ol/render/canvas/canvasimmediate.js
@@ -4,7 +4,6 @@
 
 goog.provide('ol.render.canvas.Immediate');
 
-goog.require('goog.array');
 goog.require('goog.asserts');
 goog.require('goog.vec.Mat4');
 goog.require('ol.array');
@@ -768,7 +767,7 @@ ol.render.canvas.Immediate.prototype.setContextStrokeState_ = function(strokeSta
       contextStrokeState.lineCap = context.lineCap = strokeState.lineCap;
     }
     if (ol.has.CANVAS_LINE_DASH) {
-      if (!goog.array.equals(
+      if (!ol.array.equals(
           contextStrokeState.lineDash, strokeState.lineDash)) {
         context.setLineDash(contextStrokeState.lineDash = strokeState.lineDash);
       }
diff --git a/src/ol/render/canvas/canvasreplay.js b/src/ol/render/canvas/canvasreplay.js
index ddfcd46144..9cc8dca3d7 100644
--- a/src/ol/render/canvas/canvasreplay.js
+++ b/src/ol/render/canvas/canvasreplay.js
@@ -8,7 +8,6 @@ goog.provide('ol.render.canvas.Replay');
 goog.provide('ol.render.canvas.ReplayGroup');
 goog.provide('ol.render.canvas.TextReplay');
 
-goog.require('goog.array');
 goog.require('goog.asserts');
 goog.require('goog.object');
 goog.require('goog.vec.Mat4');
@@ -1037,7 +1036,7 @@ ol.render.canvas.LineStringReplay.prototype.setStrokeStyle_ = function() {
   goog.asserts.assert(miterLimit !== undefined, 'miterLimit should be defined');
   if (state.currentStrokeStyle != strokeStyle ||
       state.currentLineCap != lineCap ||
-      !goog.array.equals(state.currentLineDash, lineDash) ||
+      !ol.array.equals(state.currentLineDash, lineDash) ||
       state.currentLineJoin != lineJoin ||
       state.currentLineWidth != lineWidth ||
       state.currentMiterLimit != miterLimit) {
diff --git a/src/ol/renderer/canvas/canvaslayerrenderer.js b/src/ol/renderer/canvas/canvaslayerrenderer.js
index b556e91fff..a3502a1d10 100644
--- a/src/ol/renderer/canvas/canvaslayerrenderer.js
+++ b/src/ol/renderer/canvas/canvaslayerrenderer.js
@@ -1,8 +1,8 @@
 goog.provide('ol.renderer.canvas.Layer');
 
-goog.require('goog.array');
 goog.require('goog.asserts');
 goog.require('goog.vec.Mat4');
+goog.require('ol.array');
 goog.require('ol.dom');
 goog.require('ol.extent');
 goog.require('ol.layer.Layer');
@@ -262,7 +262,7 @@ ol.renderer.canvas.Layer.testCanvasSize = (function() {
       var y = size[1] - 1;
       context.putImageData(imageData, x, y);
       var result = context.getImageData(x, y, 1, 1);
-      good = goog.array.equals(imageData.data, result.data);
+      good = ol.array.equals(imageData.data, result.data);
     }
     return good;
   };
diff --git a/src/ol/renderer/canvas/canvasmaprenderer.js b/src/ol/renderer/canvas/canvasmaprenderer.js
index 88f2ed55b7..f446e6a7e7 100644
--- a/src/ol/renderer/canvas/canvasmaprenderer.js
+++ b/src/ol/renderer/canvas/canvasmaprenderer.js
@@ -2,13 +2,13 @@
 
 goog.provide('ol.renderer.canvas.Map');
 
-goog.require('goog.array');
 goog.require('goog.asserts');
 goog.require('goog.dom');
 goog.require('goog.style');
 goog.require('goog.vec.Mat4');
 goog.require('ol');
 goog.require('ol.RendererType');
+goog.require('ol.array');
 goog.require('ol.css');
 goog.require('ol.dom');
 goog.require('ol.layer.Image');
@@ -171,7 +171,7 @@ ol.renderer.canvas.Map.prototype.renderFrame = function(frameState) {
   this.dispatchComposeEvent_(ol.render.EventType.PRECOMPOSE, frameState);
 
   var layerStatesArray = frameState.layerStatesArray;
-  goog.array.stableSort(layerStatesArray, ol.renderer.Map.sortByZIndex);
+  ol.array.stableSort(layerStatesArray, ol.renderer.Map.sortByZIndex);
 
   var viewResolution = frameState.viewState.resolution;
   var i, ii, layer, layerRenderer, layerState;
diff --git a/src/ol/renderer/dom/dommaprenderer.js b/src/ol/renderer/dom/dommaprenderer.js
index 1f701ee79c..8d8297d67a 100644
--- a/src/ol/renderer/dom/dommaprenderer.js
+++ b/src/ol/renderer/dom/dommaprenderer.js
@@ -1,6 +1,5 @@
 goog.provide('ol.renderer.dom.Map');
 
-goog.require('goog.array');
 goog.require('goog.asserts');
 goog.require('goog.dom');
 goog.require('goog.events');
@@ -10,6 +9,7 @@ goog.require('goog.style');
 goog.require('goog.vec.Mat4');
 goog.require('ol');
 goog.require('ol.RendererType');
+goog.require('ol.array');
 goog.require('ol.css');
 goog.require('ol.dom');
 goog.require('ol.layer.Image');
@@ -176,7 +176,7 @@ ol.renderer.dom.Map.prototype.renderFrame = function(frameState) {
   this.dispatchComposeEvent_(ol.render.EventType.PRECOMPOSE, frameState);
 
   var layerStatesArray = frameState.layerStatesArray;
-  goog.array.stableSort(layerStatesArray, ol.renderer.Map.sortByZIndex);
+  ol.array.stableSort(layerStatesArray, ol.renderer.Map.sortByZIndex);
 
   var viewResolution = frameState.viewState.resolution;
   var i, ii, layer, layerRenderer, layerState;
diff --git a/src/ol/renderer/webgl/webglmaprenderer.js b/src/ol/renderer/webgl/webglmaprenderer.js
index 68df7370da..9ece2811f6 100644
--- a/src/ol/renderer/webgl/webglmaprenderer.js
+++ b/src/ol/renderer/webgl/webglmaprenderer.js
@@ -2,7 +2,6 @@
 
 goog.provide('ol.renderer.webgl.Map');
 
-goog.require('goog.array');
 goog.require('goog.asserts');
 goog.require('goog.dom');
 goog.require('goog.events');
@@ -14,6 +13,7 @@ goog.require('goog.style');
 goog.require('goog.webgl');
 goog.require('ol');
 goog.require('ol.RendererType');
+goog.require('ol.array');
 goog.require('ol.css');
 goog.require('ol.dom');
 goog.require('ol.layer.Image');
@@ -470,7 +470,7 @@ ol.renderer.webgl.Map.prototype.renderFrame = function(frameState) {
   /** @type {Array.<ol.layer.LayerState>} */
   var layerStatesToDraw = [];
   var layerStatesArray = frameState.layerStatesArray;
-  goog.array.stableSort(layerStatesArray, ol.renderer.Map.sortByZIndex);
+  ol.array.stableSort(layerStatesArray, ol.renderer.Map.sortByZIndex);
 
   var viewResolution = frameState.viewState.resolution;
   var i, ii, layerRenderer, layerState;