diff --git a/src/ol/Image.js b/src/ol/Image.js
index 5f0e147507..86142a86fc 100644
--- a/src/ol/Image.js
+++ b/src/ol/Image.js
@@ -3,7 +3,7 @@
  */
 import {inherits} from './index.js';
 import _ol_ImageBase_ from './ImageBase.js';
-import _ol_ImageState_ from './ImageState.js';
+import ImageState from './ImageState.js';
 import _ol_events_ from './events.js';
 import EventType from './events/EventType.js';
 import {getHeight} from './extent.js';
@@ -20,7 +20,7 @@ import {getHeight} from './extent.js';
  */
 var _ol_Image_ = function(extent, resolution, pixelRatio, src, crossOrigin, imageLoadFunction) {
 
-  _ol_ImageBase_.call(this, extent, resolution, pixelRatio, _ol_ImageState_.IDLE);
+  _ol_ImageBase_.call(this, extent, resolution, pixelRatio, ImageState.IDLE);
 
   /**
    * @private
@@ -47,7 +47,7 @@ var _ol_Image_ = function(extent, resolution, pixelRatio, src, crossOrigin, imag
    * @protected
    * @type {ol.ImageState}
    */
-  this.state = _ol_ImageState_.IDLE;
+  this.state = ImageState.IDLE;
 
   /**
    * @private
@@ -75,7 +75,7 @@ _ol_Image_.prototype.getImage = function() {
  * @private
  */
 _ol_Image_.prototype.handleImageError_ = function() {
-  this.state = _ol_ImageState_.ERROR;
+  this.state = ImageState.ERROR;
   this.unlistenImage_();
   this.changed();
 };
@@ -90,7 +90,7 @@ _ol_Image_.prototype.handleImageLoad_ = function() {
   if (this.resolution === undefined) {
     this.resolution = getHeight(this.extent) / this.image_.height;
   }
-  this.state = _ol_ImageState_.LOADED;
+  this.state = ImageState.LOADED;
   this.unlistenImage_();
   this.changed();
 };
@@ -104,8 +104,8 @@ _ol_Image_.prototype.handleImageLoad_ = function() {
  * @api
  */
 _ol_Image_.prototype.load = function() {
-  if (this.state == _ol_ImageState_.IDLE || this.state == _ol_ImageState_.ERROR) {
-    this.state = _ol_ImageState_.LOADING;
+  if (this.state == ImageState.IDLE || this.state == ImageState.ERROR) {
+    this.state = ImageState.LOADING;
     this.changed();
     this.imageListenerKeys_ = [
       _ol_events_.listenOnce(this.image_, EventType.ERROR,
diff --git a/src/ol/ImageCanvas.js b/src/ol/ImageCanvas.js
index 16e3c74119..ba1783911b 100644
--- a/src/ol/ImageCanvas.js
+++ b/src/ol/ImageCanvas.js
@@ -3,7 +3,7 @@
  */
 import {inherits} from './index.js';
 import _ol_ImageBase_ from './ImageBase.js';
-import _ol_ImageState_ from './ImageState.js';
+import ImageState from './ImageState.js';
 
 /**
  * @constructor
@@ -24,8 +24,7 @@ var _ol_ImageCanvas_ = function(extent, resolution, pixelRatio, canvas, opt_load
    */
   this.loader_ = opt_loader !== undefined ? opt_loader : null;
 
-  var state = opt_loader !== undefined ?
-    _ol_ImageState_.IDLE : _ol_ImageState_.LOADED;
+  var state = opt_loader !== undefined ? ImageState.IDLE : ImageState.LOADED;
 
   _ol_ImageBase_.call(this, extent, resolution, pixelRatio, state);
 
@@ -63,9 +62,9 @@ _ol_ImageCanvas_.prototype.getError = function() {
 _ol_ImageCanvas_.prototype.handleLoad_ = function(err) {
   if (err) {
     this.error_ = err;
-    this.state = _ol_ImageState_.ERROR;
+    this.state = ImageState.ERROR;
   } else {
-    this.state = _ol_ImageState_.LOADED;
+    this.state = ImageState.LOADED;
   }
   this.changed();
 };
@@ -75,8 +74,8 @@ _ol_ImageCanvas_.prototype.handleLoad_ = function(err) {
  * @inheritDoc
  */
 _ol_ImageCanvas_.prototype.load = function() {
-  if (this.state == _ol_ImageState_.IDLE) {
-    this.state = _ol_ImageState_.LOADING;
+  if (this.state == ImageState.IDLE) {
+    this.state = ImageState.LOADING;
     this.changed();
     this.loader_(this.handleLoad_.bind(this));
   }
diff --git a/src/ol/renderer/Layer.js b/src/ol/renderer/Layer.js
index b9f3d82cee..fde1389c4c 100644
--- a/src/ol/renderer/Layer.js
+++ b/src/ol/renderer/Layer.js
@@ -2,7 +2,7 @@
  * @module ol/renderer/Layer
  */
 import {getUid, inherits, nullFunction} from '../index.js';
-import _ol_ImageState_ from '../ImageState.js';
+import ImageState from '../ImageState.js';
 import _ol_Observable_ from '../Observable.js';
 import _ol_TileState_ from '../TileState.js';
 import _ol_events_ from '../events.js';
@@ -98,7 +98,7 @@ _ol_renderer_Layer_.prototype.getLayer = function() {
  */
 _ol_renderer_Layer_.prototype.handleImageChange_ = function(event) {
   var image = /** @type {ol.Image} */ (event.target);
-  if (image.getState() === _ol_ImageState_.LOADED) {
+  if (image.getState() === ImageState.LOADED) {
     this.renderIfReadyAndVisible();
   }
 };
@@ -114,16 +114,14 @@ _ol_renderer_Layer_.prototype.handleImageChange_ = function(event) {
  */
 _ol_renderer_Layer_.prototype.loadImage = function(image) {
   var imageState = image.getState();
-  if (imageState != _ol_ImageState_.LOADED &&
-      imageState != _ol_ImageState_.ERROR) {
-    _ol_events_.listen(image, EventType.CHANGE,
-        this.handleImageChange_, this);
+  if (imageState != ImageState.LOADED && imageState != ImageState.ERROR) {
+    _ol_events_.listen(image, EventType.CHANGE, this.handleImageChange_, this);
   }
-  if (imageState == _ol_ImageState_.IDLE) {
+  if (imageState == ImageState.IDLE) {
     image.load();
     imageState = image.getState();
   }
-  return imageState == _ol_ImageState_.LOADED;
+  return imageState == ImageState.LOADED;
 };
 
 
diff --git a/src/ol/renderer/vector.js b/src/ol/renderer/vector.js
index 921b6d26c5..abe0ae7bab 100644
--- a/src/ol/renderer/vector.js
+++ b/src/ol/renderer/vector.js
@@ -2,7 +2,7 @@
  * @module ol/renderer/vector
  */
 import {getUid} from '../index.js';
-import _ol_ImageState_ from '../ImageState.js';
+import ImageState from '../ImageState.js';
 import GeometryType from '../geom/GeometryType.js';
 import _ol_render_ReplayType_ from '../render/ReplayType.js';
 var _ol_renderer_vector_ = {};
@@ -88,11 +88,10 @@ _ol_renderer_vector_.renderFeature = function(
   imageStyle = style.getImage();
   if (imageStyle) {
     imageState = imageStyle.getImageState();
-    if (imageState == _ol_ImageState_.LOADED ||
-        imageState == _ol_ImageState_.ERROR) {
+    if (imageState == ImageState.LOADED || imageState == ImageState.ERROR) {
       imageStyle.unlistenImageChange(listener, thisArg);
     } else {
-      if (imageState == _ol_ImageState_.IDLE) {
+      if (imageState == ImageState.IDLE) {
         imageStyle.load();
       }
       imageState = imageStyle.getImageState();
@@ -256,7 +255,7 @@ _ol_renderer_vector_.renderMultiPolygonGeometry_ = function(replayGroup, geometr
 _ol_renderer_vector_.renderPointGeometry_ = function(replayGroup, geometry, style, feature) {
   var imageStyle = style.getImage();
   if (imageStyle) {
-    if (imageStyle.getImageState() != _ol_ImageState_.LOADED) {
+    if (imageStyle.getImageState() != ImageState.LOADED) {
       return;
     }
     var imageReplay = replayGroup.getReplay(
@@ -284,7 +283,7 @@ _ol_renderer_vector_.renderPointGeometry_ = function(replayGroup, geometry, styl
 _ol_renderer_vector_.renderMultiPointGeometry_ = function(replayGroup, geometry, style, feature) {
   var imageStyle = style.getImage();
   if (imageStyle) {
-    if (imageStyle.getImageState() != _ol_ImageState_.LOADED) {
+    if (imageStyle.getImageState() != ImageState.LOADED) {
       return;
     }
     var imageReplay = replayGroup.getReplay(
diff --git a/src/ol/reproj/Image.js b/src/ol/reproj/Image.js
index 0379256a65..a764964dda 100644
--- a/src/ol/reproj/Image.js
+++ b/src/ol/reproj/Image.js
@@ -4,7 +4,7 @@
 import {ERROR_THRESHOLD} from './common.js';
 import {inherits} from '../index.js';
 import _ol_ImageBase_ from '../ImageBase.js';
-import _ol_ImageState_ from '../ImageState.js';
+import ImageState from '../ImageState.js';
 import _ol_events_ from '../events.js';
 import EventType from '../events/EventType.js';
 import {getCenter, getIntersection, getHeight, getWidth} from '../extent.js';
@@ -100,10 +100,10 @@ var _ol_reproj_Image_ = function(sourceProj, targetProj,
   this.sourceListenerKey_ = null;
 
 
-  var state = _ol_ImageState_.LOADED;
+  var state = ImageState.LOADED;
 
   if (this.sourceImage_) {
-    state = _ol_ImageState_.IDLE;
+    state = ImageState.IDLE;
   }
 
   _ol_ImageBase_.call(this, targetExtent, targetResolution, this.sourcePixelRatio_, state);
@@ -116,7 +116,7 @@ inherits(_ol_reproj_Image_, _ol_ImageBase_);
  * @inheritDoc
  */
 _ol_reproj_Image_.prototype.disposeInternal = function() {
-  if (this.state == _ol_ImageState_.LOADING) {
+  if (this.state == ImageState.LOADING) {
     this.unlistenSource_();
   }
   _ol_ImageBase_.prototype.disposeInternal.call(this);
@@ -144,7 +144,7 @@ _ol_reproj_Image_.prototype.getProjection = function() {
  */
 _ol_reproj_Image_.prototype.reproject_ = function() {
   var sourceState = this.sourceImage_.getState();
-  if (sourceState == _ol_ImageState_.LOADED) {
+  if (sourceState == ImageState.LOADED) {
     var width = getWidth(this.targetExtent_) / this.targetResolution_;
     var height = getHeight(this.targetExtent_) / this.targetResolution_;
 
@@ -164,20 +164,18 @@ _ol_reproj_Image_.prototype.reproject_ = function() {
  * @inheritDoc
  */
 _ol_reproj_Image_.prototype.load = function() {
-  if (this.state == _ol_ImageState_.IDLE) {
-    this.state = _ol_ImageState_.LOADING;
+  if (this.state == ImageState.IDLE) {
+    this.state = ImageState.LOADING;
     this.changed();
 
     var sourceState = this.sourceImage_.getState();
-    if (sourceState == _ol_ImageState_.LOADED ||
-        sourceState == _ol_ImageState_.ERROR) {
+    if (sourceState == ImageState.LOADED || sourceState == ImageState.ERROR) {
       this.reproject_();
     } else {
       this.sourceListenerKey_ = _ol_events_.listen(this.sourceImage_,
           EventType.CHANGE, function(e) {
             var sourceState = this.sourceImage_.getState();
-            if (sourceState == _ol_ImageState_.LOADED ||
-                sourceState == _ol_ImageState_.ERROR) {
+            if (sourceState == ImageState.LOADED || sourceState == ImageState.ERROR) {
               this.unlistenSource_();
               this.reproject_();
             }
diff --git a/src/ol/source/Image.js b/src/ol/source/Image.js
index 6682fd1489..7a2e76f934 100644
--- a/src/ol/source/Image.js
+++ b/src/ol/source/Image.js
@@ -3,7 +3,7 @@
  */
 import {ENABLE_RASTER_REPROJECTION} from '../reproj/common.js';
 import {inherits} from '../index.js';
-import _ol_ImageState_ from '../ImageState.js';
+import ImageState from '../ImageState.js';
 import _ol_array_ from '../array.js';
 import Event from '../events/Event.js';
 import {equals} from '../extent.js';
@@ -142,17 +142,17 @@ _ol_source_Image_.prototype.getImageInternal = function(extent, resolution, pixe
 _ol_source_Image_.prototype.handleImageChange = function(event) {
   var image = /** @type {ol.Image} */ (event.target);
   switch (image.getState()) {
-    case _ol_ImageState_.LOADING:
+    case ImageState.LOADING:
       this.dispatchEvent(
           new _ol_source_Image_.Event(_ol_source_Image_.EventType_.IMAGELOADSTART,
               image));
       break;
-    case _ol_ImageState_.LOADED:
+    case ImageState.LOADED:
       this.dispatchEvent(
           new _ol_source_Image_.Event(_ol_source_Image_.EventType_.IMAGELOADEND,
               image));
       break;
-    case _ol_ImageState_.ERROR:
+    case ImageState.ERROR:
       this.dispatchEvent(
           new _ol_source_Image_.Event(_ol_source_Image_.EventType_.IMAGELOADERROR,
               image));
diff --git a/src/ol/source/ImageStatic.js b/src/ol/source/ImageStatic.js
index 8fc7e1a3a0..4c269736d2 100644
--- a/src/ol/source/ImageStatic.js
+++ b/src/ol/source/ImageStatic.js
@@ -3,7 +3,7 @@
  */
 import {inherits} from '../index.js';
 import _ol_Image_ from '../Image.js';
-import _ol_ImageState_ from '../ImageState.js';
+import ImageState from '../ImageState.js';
 import {createCanvasContext2D} from '../dom.js';
 import _ol_events_ from '../events.js';
 import EventType from '../events/EventType.js';
@@ -70,7 +70,7 @@ _ol_source_ImageStatic_.prototype.getImageInternal = function(extent, resolution
  * @inheritDoc
  */
 _ol_source_ImageStatic_.prototype.handleImageChange = function(evt) {
-  if (this.image_.getState() == _ol_ImageState_.LOADED) {
+  if (this.image_.getState() == ImageState.LOADED) {
     var imageExtent = this.image_.getExtent();
     var image = this.image_.getImage();
     var imageWidth, imageHeight;
diff --git a/src/ol/style/Icon.js b/src/ol/style/Icon.js
index 68e2dfea50..7fa9099a18 100644
--- a/src/ol/style/Icon.js
+++ b/src/ol/style/Icon.js
@@ -2,7 +2,7 @@
  * @module ol/style/Icon
  */
 import {getUid, inherits} from '../index.js';
-import _ol_ImageState_ from '../ImageState.js';
+import ImageState from '../ImageState.js';
 import {assert} from '../asserts.js';
 import _ol_color_ from '../color.js';
 import _ol_events_ from '../events.js';
@@ -95,7 +95,7 @@ var _ol_style_Icon_ = function(opt_options) {
    * @type {ol.ImageState}
    */
   var imageState = options.src !== undefined ?
-    _ol_ImageState_.IDLE : _ol_ImageState_.LOADED;
+    ImageState.IDLE : ImageState.LOADED;
 
   /**
    * @private
diff --git a/src/ol/style/IconImage.js b/src/ol/style/IconImage.js
index be0e57f23f..ee92b98241 100644
--- a/src/ol/style/IconImage.js
+++ b/src/ol/style/IconImage.js
@@ -6,7 +6,7 @@ import {createCanvasContext2D} from '../dom.js';
 import _ol_events_ from '../events.js';
 import EventTarget from '../events/EventTarget.js';
 import EventType from '../events/EventType.js';
-import _ol_ImageState_ from '../ImageState.js';
+import ImageState from '../ImageState.js';
 import _ol_style_ from '../style.js';
 
 /**
@@ -83,7 +83,7 @@ var _ol_style_IconImage_ = function(image, src, size, crossOrigin, imageState,
    * @type {boolean}
    */
   this.tainting_ = false;
-  if (this.imageState_ == _ol_ImageState_.LOADED) {
+  if (this.imageState_ == ImageState.LOADED) {
     this.determineTainting_();
   }
 
@@ -140,7 +140,7 @@ _ol_style_IconImage_.prototype.dispatchChangeEvent_ = function() {
  * @private
  */
 _ol_style_IconImage_.prototype.handleImageError_ = function() {
-  this.imageState_ = _ol_ImageState_.ERROR;
+  this.imageState_ = ImageState.ERROR;
   this.unlistenImage_();
   this.dispatchChangeEvent_();
 };
@@ -150,7 +150,7 @@ _ol_style_IconImage_.prototype.handleImageError_ = function() {
  * @private
  */
 _ol_style_IconImage_.prototype.handleImageLoad_ = function() {
-  this.imageState_ = _ol_ImageState_.LOADED;
+  this.imageState_ = ImageState.LOADED;
   if (this.size_) {
     this.image_.width = this.size_[0];
     this.image_.height = this.size_[1];
@@ -220,8 +220,8 @@ _ol_style_IconImage_.prototype.getSrc = function() {
  * Load not yet loaded URI.
  */
 _ol_style_IconImage_.prototype.load = function() {
-  if (this.imageState_ == _ol_ImageState_.IDLE) {
-    this.imageState_ = _ol_ImageState_.LOADING;
+  if (this.imageState_ == ImageState.IDLE) {
+    this.imageState_ = ImageState.LOADING;
     this.imageListenerKeys_ = [
       _ol_events_.listenOnce(this.image_, EventType.ERROR,
           this.handleImageError_, this),
diff --git a/src/ol/style/RegularShape.js b/src/ol/style/RegularShape.js
index f1c9525dc4..c08d7066bb 100644
--- a/src/ol/style/RegularShape.js
+++ b/src/ol/style/RegularShape.js
@@ -5,7 +5,7 @@ import {inherits} from '../index.js';
 import {asColorLike} from '../colorlike.js';
 import {createCanvasContext2D} from '../dom.js';
 import _ol_has_ from '../has.js';
-import _ol_ImageState_ from '../ImageState.js';
+import ImageState from '../ImageState.js';
 import _ol_render_canvas_ from '../render/canvas.js';
 import _ol_style_Image_ from '../style/Image.js';
 
@@ -228,7 +228,7 @@ _ol_style_RegularShape_.prototype.getHitDetectionImageSize = function() {
  * @inheritDoc
  */
 _ol_style_RegularShape_.prototype.getImageState = function() {
-  return _ol_ImageState_.LOADED;
+  return ImageState.LOADED;
 };