diff --git a/examples/geojson-vt.js b/examples/geojson-vt.js
index 21c0547169..c284a12282 100644
--- a/examples/geojson-vt.js
+++ b/examples/geojson-vt.js
@@ -3,7 +3,7 @@ import Map from '../src/ol/Map.js';
 import View from '../src/ol/View.js';
 import GeoJSON from '../src/ol/format/GeoJSON.js';
 import OSM from '../src/ol/source/OSM.js';
-import _ol_source_VectorTile_ from '../src/ol/source/VectorTile.js';
+import VectorTileSource from '../src/ol/source/VectorTile.js';
 import TileLayer from '../src/ol/layer/Tile.js';
 import _ol_layer_VectorTile_ from '../src/ol/layer/VectorTile.js';
 import _ol_proj_Projection_ from '../src/ol/proj/Projection.js';
@@ -74,7 +74,7 @@ fetch(url).then(function(response) {
     extent: 4096,
     debug: 1
   });
-  var vectorSource = new _ol_source_VectorTile_({
+  var vectorSource = new VectorTileSource({
     format: new GeoJSON(),
     tileLoadFunction: function(tile) {
       var format = tile.getFormat();
diff --git a/examples/mapbox-vector-tiles-advanced.js b/examples/mapbox-vector-tiles-advanced.js
index b24f69a8bc..8b6b0d3d6f 100644
--- a/examples/mapbox-vector-tiles-advanced.js
+++ b/examples/mapbox-vector-tiles-advanced.js
@@ -3,7 +3,7 @@ import View from '../src/ol/View.js';
 import MVT from '../src/ol/format/MVT.js';
 import _ol_layer_VectorTile_ from '../src/ol/layer/VectorTile.js';
 import {get as getProjection} from '../src/ol/proj.js';
-import _ol_source_VectorTile_ from '../src/ol/source/VectorTile.js';
+import VectorTileSource from '../src/ol/source/VectorTile.js';
 import _ol_style_Fill_ from '../src/ol/style/Fill.js';
 import _ol_style_Icon_ from '../src/ol/style/Icon.js';
 import _ol_style_Stroke_ from '../src/ol/style/Stroke.js';
@@ -33,7 +33,7 @@ function tileUrlFunction(tileCoord) {
 var map = new Map({
   layers: [
     new _ol_layer_VectorTile_({
-      source: new _ol_source_VectorTile_({
+      source: new VectorTileSource({
         attributions: '© <a href="https://www.mapbox.com/map-feedback/">Mapbox</a> ' +
           '© <a href="https://www.openstreetmap.org/copyright">' +
           'OpenStreetMap contributors</a>',
diff --git a/examples/mapbox-vector-tiles.js b/examples/mapbox-vector-tiles.js
index ea1df8acb1..cec13bfa6e 100644
--- a/examples/mapbox-vector-tiles.js
+++ b/examples/mapbox-vector-tiles.js
@@ -2,7 +2,7 @@ import Map from '../src/ol/Map.js';
 import View from '../src/ol/View.js';
 import MVT from '../src/ol/format/MVT.js';
 import _ol_layer_VectorTile_ from '../src/ol/layer/VectorTile.js';
-import _ol_source_VectorTile_ from '../src/ol/source/VectorTile.js';
+import VectorTileSource from '../src/ol/source/VectorTile.js';
 import _ol_style_Fill_ from '../src/ol/style/Fill.js';
 import _ol_style_Icon_ from '../src/ol/style/Icon.js';
 import _ol_style_Stroke_ from '../src/ol/style/Stroke.js';
@@ -16,7 +16,7 @@ var map = new Map({
   layers: [
     new _ol_layer_VectorTile_({
       declutter: true,
-      source: new _ol_source_VectorTile_({
+      source: new VectorTileSource({
         attributions: '© <a href="https://www.mapbox.com/map-feedback/">Mapbox</a> ' +
           '© <a href="https://www.openstreetmap.org/copyright">' +
           'OpenStreetMap contributors</a>',
diff --git a/examples/osm-vector-tiles.js b/examples/osm-vector-tiles.js
index 1d34df6df3..05ac9d689d 100644
--- a/examples/osm-vector-tiles.js
+++ b/examples/osm-vector-tiles.js
@@ -3,7 +3,7 @@ import View from '../src/ol/View.js';
 import TopoJSON from '../src/ol/format/TopoJSON.js';
 import _ol_layer_VectorTile_ from '../src/ol/layer/VectorTile.js';
 import {fromLonLat} from '../src/ol/proj.js';
-import _ol_source_VectorTile_ from '../src/ol/source/VectorTile.js';
+import VectorTileSource from '../src/ol/source/VectorTile.js';
 import _ol_style_Fill_ from '../src/ol/style/Fill.js';
 import _ol_style_Stroke_ from '../src/ol/style/Stroke.js';
 import _ol_style_Style_ from '../src/ol/style/Style.js';
@@ -61,7 +61,7 @@ var roadStyle = function(feature) {
 var map = new Map({
   layers: [
     new _ol_layer_VectorTile_({
-      source: new _ol_source_VectorTile_({
+      source: new VectorTileSource({
         attributions: '&copy; OpenStreetMap contributors, Who’s On First, ' +
             'Natural Earth, and openstreetmapdata.com',
         format: new TopoJSON({
diff --git a/examples/vector-tile-info.js b/examples/vector-tile-info.js
index 987e9363a0..a159eb02ec 100644
--- a/examples/vector-tile-info.js
+++ b/examples/vector-tile-info.js
@@ -2,7 +2,7 @@ import Map from '../src/ol/Map.js';
 import View from '../src/ol/View.js';
 import MVT from '../src/ol/format/MVT.js';
 import _ol_layer_VectorTile_ from '../src/ol/layer/VectorTile.js';
-import _ol_source_VectorTile_ from '../src/ol/source/VectorTile.js';
+import VectorTileSource from '../src/ol/source/VectorTile.js';
 
 var map = new Map({
   target: 'map',
@@ -11,7 +11,7 @@ var map = new Map({
     zoom: 2
   }),
   layers: [new _ol_layer_VectorTile_({
-    source: new _ol_source_VectorTile_({
+    source: new VectorTileSource({
       format: new MVT(),
       url: 'https://basemaps.arcgis.com/v1/arcgis/rest/services/World_Basemap/VectorTileServer/tile/{z}/{y}/{x}.pbf'
     })
diff --git a/src/ol/source/VectorTile.js b/src/ol/source/VectorTile.js
index 9018f7e845..6287477ad3 100644
--- a/src/ol/source/VectorTile.js
+++ b/src/ol/source/VectorTile.js
@@ -26,7 +26,7 @@ import _ol_tilegrid_ from '../tilegrid.js';
  * @param {olx.source.VectorTileOptions} options Vector tile options.
  * @api
  */
-var _ol_source_VectorTile_ = function(options) {
+var VectorTileSource = function(options) {
   var projection = options.projection || 'EPSG:3857';
 
   var extent = options.extent || _ol_tilegrid_.extentFromProjection(projection);
@@ -87,13 +87,13 @@ var _ol_source_VectorTile_ = function(options) {
 
 };
 
-inherits(_ol_source_VectorTile_, UrlTile);
+inherits(VectorTileSource, UrlTile);
 
 
 /**
  * @return {boolean} The source can have overlapping geometries.
  */
-_ol_source_VectorTile_.prototype.getOverlaps = function() {
+VectorTileSource.prototype.getOverlaps = function() {
   return this.overlaps_;
 };
 
@@ -101,7 +101,7 @@ _ol_source_VectorTile_.prototype.getOverlaps = function() {
  * clear {@link ol.TileCache} and delete all source tiles
  * @api
  */
-_ol_source_VectorTile_.prototype.clear = function() {
+VectorTileSource.prototype.clear = function() {
   this.tileCache.clear();
   this.sourceTiles_ = {};
 };
@@ -109,7 +109,7 @@ _ol_source_VectorTile_.prototype.clear = function() {
 /**
  * @inheritDoc
  */
-_ol_source_VectorTile_.prototype.getTile = function(z, x, y, pixelRatio, projection) {
+VectorTileSource.prototype.getTile = function(z, x, y, pixelRatio, projection) {
   var tileCoordKey = _ol_tilecoord_.getKeyZXY(z, x, y);
   if (this.tileCache.containsKey(tileCoordKey)) {
     return /** @type {!ol.Tile} */ (this.tileCache.get(tileCoordKey));
@@ -136,7 +136,7 @@ _ol_source_VectorTile_.prototype.getTile = function(z, x, y, pixelRatio, project
 /**
  * @inheritDoc
  */
-_ol_source_VectorTile_.prototype.getTileGridForProjection = function(projection) {
+VectorTileSource.prototype.getTileGridForProjection = function(projection) {
   var code = projection.getCode();
   var tileGrid = this.tileGrids_[code];
   if (!tileGrid) {
@@ -153,7 +153,7 @@ _ol_source_VectorTile_.prototype.getTileGridForProjection = function(projection)
 /**
  * @inheritDoc
  */
-_ol_source_VectorTile_.prototype.getTilePixelRatio = function(pixelRatio) {
+VectorTileSource.prototype.getTilePixelRatio = function(pixelRatio) {
   return pixelRatio;
 };
 
@@ -161,8 +161,8 @@ _ol_source_VectorTile_.prototype.getTilePixelRatio = function(pixelRatio) {
 /**
  * @inheritDoc
  */
-_ol_source_VectorTile_.prototype.getTilePixelSize = function(z, pixelRatio, projection) {
+VectorTileSource.prototype.getTilePixelSize = function(z, pixelRatio, projection) {
   var tileSize = _ol_size_.toSize(this.getTileGridForProjection(projection).getTileSize(z));
   return [Math.round(tileSize[0] * pixelRatio), Math.round(tileSize[1] * pixelRatio)];
 };
-export default _ol_source_VectorTile_;
+export default VectorTileSource;
diff --git a/test/rendering/ol/layer/vectortile.test.js b/test/rendering/ol/layer/vectortile.test.js
index 357384b358..ecffba7886 100644
--- a/test/rendering/ol/layer/vectortile.test.js
+++ b/test/rendering/ol/layer/vectortile.test.js
@@ -7,7 +7,7 @@ import VectorLayer from '../../../../src/ol/layer/Vector.js';
 import _ol_layer_VectorTile_ from '../../../../src/ol/layer/VectorTile.js';
 import _ol_obj_ from '../../../../src/ol/obj.js';
 import VectorSource from '../../../../src/ol/source/Vector.js';
-import _ol_source_VectorTile_ from '../../../../src/ol/source/VectorTile.js';
+import VectorTileSource from '../../../../src/ol/source/VectorTile.js';
 import _ol_style_Circle_ from '../../../../src/ol/style/Circle.js';
 import _ol_style_Fill_ from '../../../../src/ol/style/Fill.js';
 import _ol_style_Style_ from '../../../../src/ol/style/Style.js';
@@ -69,7 +69,7 @@ describe('ol.rendering.layer.VectorTile', function() {
     var source;
 
     beforeEach(function() {
-      source = new _ol_source_VectorTile_({
+      source = new VectorTileSource({
         format: new MVT(),
         tileGrid: _ol_tilegrid_.createXYZ(),
         url: 'rendering/ol/data/tiles/mvt/{z}-{x}-{y}.vector.pbf',
diff --git a/test/spec/ol/layer/vectortile.test.js b/test/spec/ol/layer/vectortile.test.js
index 060d5a3b2a..860d8237b3 100644
--- a/test/spec/ol/layer/vectortile.test.js
+++ b/test/spec/ol/layer/vectortile.test.js
@@ -1,5 +1,5 @@
 import _ol_layer_VectorTile_ from '../../../../src/ol/layer/VectorTile.js';
-import _ol_source_VectorTile_ from '../../../../src/ol/source/VectorTile.js';
+import VectorTileSource from '../../../../src/ol/source/VectorTile.js';
 
 
 describe('ol.layer.VectorTile', function() {
@@ -10,7 +10,7 @@ describe('ol.layer.VectorTile', function() {
 
     beforeEach(function() {
       layer = new _ol_layer_VectorTile_({
-        source: new _ol_source_VectorTile_({})
+        source: new VectorTileSource({})
       });
     });
 
@@ -40,18 +40,18 @@ describe('ol.layer.VectorTile', function() {
     it('works with options', function() {
       var layer = new _ol_layer_VectorTile_({
         renderMode: 'vector',
-        source: new _ol_source_VectorTile_({})
+        source: new VectorTileSource({})
       });
       expect(layer.getRenderMode()).to.be('vector');
       layer = new _ol_layer_VectorTile_({
         renderMode: 'image',
-        source: new _ol_source_VectorTile_({})
+        source: new VectorTileSource({})
       });
       expect(layer.getRenderMode()).to.be('image');
       expect(function() {
         layer = new _ol_layer_VectorTile_({
           renderMode: 'foo',
-          source: new _ol_source_VectorTile_({})
+          source: new VectorTileSource({})
         });
       }).to.throwException();
     });
diff --git a/test/spec/ol/renderer/canvas/vectortilelayer.test.js b/test/spec/ol/renderer/canvas/vectortilelayer.test.js
index d9ccd4a973..666c809aef 100644
--- a/test/spec/ol/renderer/canvas/vectortilelayer.test.js
+++ b/test/spec/ol/renderer/canvas/vectortilelayer.test.js
@@ -15,7 +15,7 @@ import _ol_proj_Projection_ from '../../../../../src/ol/proj/Projection.js';
 import _ol_render_canvas_ from '../../../../../src/ol/render/canvas.js';
 import _ol_render_Feature_ from '../../../../../src/ol/render/Feature.js';
 import CanvasVectorTileLayerRenderer from '../../../../../src/ol/renderer/canvas/VectorTileLayer.js';
-import _ol_source_VectorTile_ from '../../../../../src/ol/source/VectorTile.js';
+import VectorTileSource from '../../../../../src/ol/source/VectorTile.js';
 import _ol_style_Style_ from '../../../../../src/ol/style/Style.js';
 import _ol_style_Text_ from '../../../../../src/ol/style/Text.js';
 import _ol_tilegrid_ from '../../../../../src/ol/tilegrid.js';
@@ -67,13 +67,13 @@ describe('ol.renderer.canvas.VectorTileLayer', function() {
         tileCallback(this);
       };
       inherits(TileClass, VectorTile);
-      source = new _ol_source_VectorTile_({
+      source = new VectorTileSource({
         format: new MVT(),
         tileClass: TileClass,
         tileGrid: _ol_tilegrid_.createXYZ()
       });
       source.getTile = function() {
-        var tile = _ol_source_VectorTile_.prototype.getTile.apply(source, arguments);
+        var tile = VectorTileSource.prototype.getTile.apply(source, arguments);
         tile.setState(TileState.LOADED);
         return tile;
       };
@@ -240,7 +240,7 @@ describe('ol.renderer.canvas.VectorTileLayer', function() {
   describe('#prepareFrame', function() {
     it('re-renders when layer changed', function() {
       var layer = new _ol_layer_VectorTile_({
-        source: new _ol_source_VectorTile_({
+        source: new VectorTileSource({
           tileGrid: _ol_tilegrid_.createXYZ(),
           transition: 0
         })
@@ -309,7 +309,7 @@ describe('ol.renderer.canvas.VectorTileLayer', function() {
     beforeEach(function() {
       replayGroup = {};
       layer = new _ol_layer_VectorTile_({
-        source: new _ol_source_VectorTile_({
+        source: new VectorTileSource({
           tileClass: TileClass,
           tileGrid: _ol_tilegrid_.createXYZ()
         })
@@ -349,7 +349,7 @@ describe('ol.renderer.canvas.VectorTileLayer', function() {
       target.style.height = '100px';
       document.body.appendChild(target);
       var extent = [1824704.739223726, 6141868.096770482, 1827150.7241288517, 6144314.081675608];
-      var source = new _ol_source_VectorTile_({
+      var source = new VectorTileSource({
         format: new MVT(),
         url: 'spec/ol/data/14-8938-5680.vector.pbf',
         minZoom: 14,
diff --git a/test/spec/ol/source/vectortile.test.js b/test/spec/ol/source/vectortile.test.js
index 9ab209658b..4838982c06 100644
--- a/test/spec/ol/source/vectortile.test.js
+++ b/test/spec/ol/source/vectortile.test.js
@@ -5,14 +5,14 @@ import VectorTile from '../../../../src/ol/VectorTile.js';
 import MVT from '../../../../src/ol/format/MVT.js';
 import _ol_layer_VectorTile_ from '../../../../src/ol/layer/VectorTile.js';
 import {get as getProjection} from '../../../../src/ol/proj.js';
-import _ol_source_VectorTile_ from '../../../../src/ol/source/VectorTile.js';
+import VectorTileSource from '../../../../src/ol/source/VectorTile.js';
 import _ol_tilegrid_ from '../../../../src/ol/tilegrid.js';
 import TileGrid from '../../../../src/ol/tilegrid/TileGrid.js';
 
 describe('ol.source.VectorTile', function() {
 
   var format = new MVT();
-  var source = new _ol_source_VectorTile_({
+  var source = new VectorTileSource({
     format: format,
     tilePixelRatio: 8,
     url: 'spec/ol/data/{z}-{x}-{y}.vector.pbf'
@@ -96,7 +96,7 @@ describe('ol.source.VectorTile', function() {
 
       var extent = [665584.2026596286, 7033250.839875697, 667162.0221431496, 7035280.378636755];
 
-      source = new _ol_source_VectorTile_({
+      source = new VectorTileSource({
         tileGrid: new TileGrid({
           origin: [218128, 6126002],
           resolutions: [4096, 2048, 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 1, 0.5]