diff --git a/src/ol/interaction/Snap.js b/src/ol/interaction/Snap.js
index 8ed63e2cee..8ed90efe25 100644
--- a/src/ol/interaction/Snap.js
+++ b/src/ol/interaction/Snap.js
@@ -469,9 +469,7 @@ class Snap extends PointerInteraction {
     if (this.vertex_) {
       for (let i = 0; i < segmentsLength; ++i) {
         const segmentData = segments[i];
-        if (
-          segmentData.feature.getGeometry().getType() !== GeometryType.CIRCLE
-        ) {
+        if (segmentData.feature.getGeometry().getType() !== 'Circle') {
           segmentData.segment.forEach((vertex) => {
             const tempVertexCoord = fromUserCoordinate(vertex, projection);
             const delta = squaredDistance(projectedCoordinate, tempVertexCoord);
@@ -492,9 +490,7 @@ class Snap extends PointerInteraction {
       for (let i = 0; i < segmentsLength; ++i) {
         let vertex = null;
         const segmentData = segments[i];
-        if (
-          segmentData.feature.getGeometry().getType() === GeometryType.CIRCLE
-        ) {
+        if (segmentData.feature.getGeometry().getType() === 'Circle') {
           let circleGeometry = segmentData.feature.getGeometry();
           const userProjection = getUserProjection();
           if (userProjection) {
diff --git a/src/ol/layer/Layer.js b/src/ol/layer/Layer.js
index 1eb163f4a3..d481d90c6a 100644
--- a/src/ol/layer/Layer.js
+++ b/src/ol/layer/Layer.js
@@ -208,7 +208,7 @@ class Layer extends BaseLayer {
   }
 
   /**
-   * @return {import("../source/State.js").default} Source state.
+   * @return {import("../source/Source.js").State} Source state.
    */
   getSourceState() {
     const source = this.getSource();
diff --git a/src/ol/layer/WebGLTile.js b/src/ol/layer/WebGLTile.js
index 65c3038337..1dcb919e84 100644
--- a/src/ol/layer/WebGLTile.js
+++ b/src/ol/layer/WebGLTile.js
@@ -3,7 +3,6 @@
  */
 import BaseTileLayer from './BaseTile.js';
 import LayerProperty from '../layer/Property.js';
-import SourceState from '../source/State.js';
 import WebGLTileLayerRenderer, {
   Attributes,
   Uniforms,
@@ -383,11 +382,11 @@ class WebGLTileLayer extends BaseTileLayer {
   }
 
   /**
-   * @return {import("../source/State.js").default} Source state.
+   * @return {import("../source/Source.js").State} Source state.
    */
   getSourceState() {
     const source = this.getRenderSource();
-    return source ? source.getState() : SourceState.UNDEFINED;
+    return source ? source.getState() : 'undefined';
   }
 
   /**
@@ -454,16 +453,16 @@ class WebGLTileLayer extends BaseTileLayer {
     for (let i = 0, ii = sources.length; i < ii; ++i) {
       const source = sources[i];
       const sourceState = source.getState();
-      if (sourceState == SourceState.LOADING) {
+      if (sourceState == 'loading') {
         const onChange = () => {
-          if (source.getState() == SourceState.READY) {
+          if (source.getState() == 'ready') {
             source.removeEventListener('change', onChange);
             this.changed();
           }
         };
         source.addEventListener('change', onChange);
       }
-      ready = ready && sourceState == SourceState.READY;
+      ready = ready && sourceState == 'ready';
     }
     const canvas = this.renderSources(frameState, sources);
     if (this.getRenderer().renderComplete && ready) {
diff --git a/src/ol/render/Feature.js b/src/ol/render/Feature.js
index 6d483ef65c..9a6f9d2e7c 100644
--- a/src/ol/render/Feature.js
+++ b/src/ol/render/Feature.js
@@ -347,25 +347,25 @@ RenderFeature.prototype.getFlatCoordinates =
 export function toGeometry(renderFeature) {
   const geometryType = renderFeature.getType();
   switch (geometryType) {
-    case GeometryType.POINT:
+    case 'Point':
       return new Point(renderFeature.getFlatCoordinates());
-    case GeometryType.MULTI_POINT:
+    case 'MultiPoint':
       return new MultiPoint(
         renderFeature.getFlatCoordinates(),
         GeometryLayout.XY
       );
-    case GeometryType.LINE_STRING:
+    case 'LineString':
       return new LineString(
         renderFeature.getFlatCoordinates(),
         GeometryLayout.XY
       );
-    case GeometryType.MULTI_LINE_STRING:
+    case 'MultiLineString':
       return new MultiLineString(
         renderFeature.getFlatCoordinates(),
         GeometryLayout.XY,
         /** @type {Array<number>} */ (renderFeature.getEnds())
       );
-    case GeometryType.POLYGON:
+    case 'Polygon':
       const flatCoordinates = renderFeature.getFlatCoordinates();
       const ends = /** @type {Array<number>} */ (renderFeature.getEnds());
       const endss = inflateEnds(flatCoordinates, ends);
diff --git a/src/ol/renderer/Composite.js b/src/ol/renderer/Composite.js
index bcb6df4d4c..3ef0b77a16 100644
--- a/src/ol/renderer/Composite.js
+++ b/src/ol/renderer/Composite.js
@@ -114,8 +114,7 @@ class CompositeMapRenderer extends MapRenderer {
       const sourceState = layer.getSourceState();
       if (
         !inView(layerState, viewState) ||
-        (layerState.sourceState != 'ready' &&
-          layerState.sourceState != 'undefined')
+        (sourceState != 'ready' && sourceState != 'undefined')
       ) {
         layer.unrender();
         continue;
diff --git a/test/browser/spec/ol/interaction/draw.test.js b/test/browser/spec/ol/interaction/draw.test.js
index 3028b72555..5b80d01246 100644
--- a/test/browser/spec/ol/interaction/draw.test.js
+++ b/test/browser/spec/ol/interaction/draw.test.js
@@ -1968,14 +1968,14 @@ describe('ol.interaction.Draw', function () {
     }
 
     function drawPoint(geometryLayout) {
-      createDrawInteraction(GeometryType.POINT, geometryLayout);
+      createDrawInteraction('Point', geometryLayout);
       simulateEvent('pointermove', 10, 20);
       simulateEvent('pointerdown', 10, 20);
       simulateEvent('pointerup', 10, 20);
     }
 
     function drawLineString(geometryLayout) {
-      createDrawInteraction(GeometryType.LINE_STRING, geometryLayout);
+      createDrawInteraction('LineString', geometryLayout);
       // first point
       simulateEvent('pointermove', 10, 20);
       simulateEvent('pointerdown', 10, 20);
@@ -1992,7 +1992,7 @@ describe('ol.interaction.Draw', function () {
     }
 
     function drawPolygon(geometryLayout) {
-      createDrawInteraction(GeometryType.POLYGON, geometryLayout);
+      createDrawInteraction('Polygon', geometryLayout);
       // first point
       simulateEvent('pointermove', 10, 20);
       simulateEvent('pointerdown', 10, 20);
@@ -2014,7 +2014,7 @@ describe('ol.interaction.Draw', function () {
     }
 
     function drawCircle(geometryLayout) {
-      createDrawInteraction(GeometryType.CIRCLE, geometryLayout);
+      createDrawInteraction('Circle', geometryLayout);
       // first point
       simulateEvent('pointermove', 10, 20);
       simulateEvent('pointerdown', 10, 20);
diff --git a/test/node/ol/render/Feature.test.js b/test/node/ol/render/Feature.test.js
index 3c432e6215..367c15c222 100644
--- a/test/node/ol/render/Feature.test.js
+++ b/test/node/ol/render/Feature.test.js
@@ -1,4 +1,3 @@
-import GeometryType from '../../../../src/ol/geom/GeometryType.js';
 import RenderFeature, {
   toFeature,
   toGeometry,
@@ -141,7 +140,7 @@ describe('ol/render/Feature', function () {
         ],
       ]);
       const renderFeature = new RenderFeature(
-        GeometryType.POLYGON,
+        'Polygon',
         geometry.getFlatCoordinates().slice(),
         geometry.getEndss().flat(1)
       );