diff --git a/src/ol/geom/LineString.js b/src/ol/geom/LineString.js
index a219e6e8a6..18d5c5ac2d 100644
--- a/src/ol/geom/LineString.js
+++ b/src/ol/geom/LineString.js
@@ -11,7 +11,7 @@ import {assignClosestPoint, maxSquaredDelta} from '../geom/flat/closest.js';
 import {deflateCoordinates} from '../geom/flat/deflate.js';
 import {inflateCoordinates} from '../geom/flat/inflate.js';
 import {interpolatePoint, lineStringCoordinateAtM} from '../geom/flat/interpolate.js';
-import _ol_geom_flat_intersectsextent_ from '../geom/flat/intersectsextent.js';
+import {intersectsLineString} from '../geom/flat/intersectsextent.js';
 import {lineStringLength} from '../geom/flat/length.js';
 import {forEach as forEachSegment} from '../geom/flat/segments.js';
 import {douglasPeucker} from '../geom/flat/simplify.js';
@@ -229,7 +229,7 @@ LineString.prototype.getType = function() {
  * @api
  */
 LineString.prototype.intersectsExtent = function(extent) {
-  return _ol_geom_flat_intersectsextent_.lineString(
+  return intersectsLineString(
     this.flatCoordinates, 0, this.flatCoordinates.length, this.stride,
     extent);
 };
diff --git a/src/ol/geom/MultiLineString.js b/src/ol/geom/MultiLineString.js
index dc6a07193f..93bacc6f60 100644
--- a/src/ol/geom/MultiLineString.js
+++ b/src/ol/geom/MultiLineString.js
@@ -12,7 +12,7 @@ import {assignClosestArrayPoint, arrayMaxSquaredDelta} from '../geom/flat/closes
 import {deflateCoordinatesArray} from '../geom/flat/deflate.js';
 import {inflateCoordinatesArray} from '../geom/flat/inflate.js';
 import {interpolatePoint, lineStringsCoordinateAtM} from '../geom/flat/interpolate.js';
-import _ol_geom_flat_intersectsextent_ from '../geom/flat/intersectsextent.js';
+import {intersectsLineStringArray} from '../geom/flat/intersectsextent.js';
 import {douglasPeuckerArray} from '../geom/flat/simplify.js';
 
 /**
@@ -247,7 +247,7 @@ MultiLineString.prototype.getType = function() {
  * @api
  */
 MultiLineString.prototype.intersectsExtent = function(extent) {
-  return _ol_geom_flat_intersectsextent_.lineStrings(
+  return intersectsLineStringArray(
     this.flatCoordinates, 0, this.ends_, this.stride, extent);
 };
 
diff --git a/src/ol/geom/MultiPolygon.js b/src/ol/geom/MultiPolygon.js
index 6c39b787cb..0a165505ec 100644
--- a/src/ol/geom/MultiPolygon.js
+++ b/src/ol/geom/MultiPolygon.js
@@ -16,7 +16,7 @@ import {linearRingssContainsXY} from '../geom/flat/contains.js';
 import {deflateMultiCoordinatesArray} from '../geom/flat/deflate.js';
 import {inflateMultiCoordinatesArray} from '../geom/flat/inflate.js';
 import {getInteriorPointsOfMultiArray} from '../geom/flat/interiorpoint.js';
-import _ol_geom_flat_intersectsextent_ from '../geom/flat/intersectsextent.js';
+import {intersectsLinearRingMultiArray} from '../geom/flat/intersectsextent.js';
 import {linearRingsAreOriented, orientLinearRingsArray} from '../geom/flat/orient.js';
 import {quantizeMultiArray} from '../geom/flat/simplify.js';
 
@@ -344,7 +344,7 @@ MultiPolygon.prototype.getType = function() {
  * @api
  */
 MultiPolygon.prototype.intersectsExtent = function(extent) {
-  return _ol_geom_flat_intersectsextent_.linearRingss(
+  return intersectsLinearRingMultiArray(
     this.getOrientedFlatCoordinates(), 0, this.endss_, this.stride, extent);
 };
 
diff --git a/src/ol/geom/Polygon.js b/src/ol/geom/Polygon.js
index 644d4eb8e8..50e7dfccc0 100644
--- a/src/ol/geom/Polygon.js
+++ b/src/ol/geom/Polygon.js
@@ -16,7 +16,7 @@ import {linearRingsContainsXY} from '../geom/flat/contains.js';
 import {deflateCoordinatesArray} from '../geom/flat/deflate.js';
 import {inflateCoordinatesArray} from '../geom/flat/inflate.js';
 import {getInteriorPointOfArray} from '../geom/flat/interiorpoint.js';
-import _ol_geom_flat_intersectsextent_ from '../geom/flat/intersectsextent.js';
+import {intersectsLinearRingArray} from '../geom/flat/intersectsextent.js';
 import {linearRingIsOriented, orientLinearRings} from '../geom/flat/orient.js';
 import {quantizeArray} from '../geom/flat/simplify.js';
 import {modulo} from '../math.js';
@@ -325,7 +325,7 @@ Polygon.prototype.getType = function() {
  * @api
  */
 Polygon.prototype.intersectsExtent = function(extent) {
-  return _ol_geom_flat_intersectsextent_.linearRings(
+  return intersectsLinearRingArray(
     this.getOrientedFlatCoordinates(), 0, this.ends_, this.stride, extent);
 };
 
diff --git a/src/ol/geom/flat/intersectsextent.js b/src/ol/geom/flat/intersectsextent.js
index e4dfb1f200..87bb8ea31b 100644
--- a/src/ol/geom/flat/intersectsextent.js
+++ b/src/ol/geom/flat/intersectsextent.js
@@ -4,7 +4,6 @@
 import {containsExtent, createEmpty, extendFlatCoordinates, intersects, intersectsSegment} from '../../extent.js';
 import {linearRingContainsXY, linearRingContainsExtent} from '../flat/contains.js';
 import {forEach as forEachSegment} from '../flat/segments.js';
-const _ol_geom_flat_intersectsextent_ = {};
 
 
 /**
@@ -15,7 +14,7 @@ const _ol_geom_flat_intersectsextent_ = {};
  * @param {ol.Extent} extent Extent.
  * @return {boolean} True if the geometry and the extent intersect.
  */
-_ol_geom_flat_intersectsextent_.lineString = function(flatCoordinates, offset, end, stride, extent) {
+export function intersectsLineString(flatCoordinates, offset, end, stride, extent) {
   const coordinatesExtent = extendFlatCoordinates(
     createEmpty(), flatCoordinates, offset, end, stride);
   if (!intersects(extent, coordinatesExtent)) {
@@ -42,7 +41,7 @@ _ol_geom_flat_intersectsextent_.lineString = function(flatCoordinates, offset, e
     function(point1, point2) {
       return intersectsSegment(extent, point1, point2);
     });
-};
+}
 
 
 /**
@@ -53,16 +52,16 @@ _ol_geom_flat_intersectsextent_.lineString = function(flatCoordinates, offset, e
  * @param {ol.Extent} extent Extent.
  * @return {boolean} True if the geometry and the extent intersect.
  */
-_ol_geom_flat_intersectsextent_.lineStrings = function(flatCoordinates, offset, ends, stride, extent) {
+export function intersectsLineStringArray(flatCoordinates, offset, ends, stride, extent) {
   for (let i = 0, ii = ends.length; i < ii; ++i) {
-    if (_ol_geom_flat_intersectsextent_.lineString(
+    if (intersectsLineString(
       flatCoordinates, offset, ends[i], stride, extent)) {
       return true;
     }
     offset = ends[i];
   }
   return false;
-};
+}
 
 
 /**
@@ -73,8 +72,8 @@ _ol_geom_flat_intersectsextent_.lineStrings = function(flatCoordinates, offset,
  * @param {ol.Extent} extent Extent.
  * @return {boolean} True if the geometry and the extent intersect.
  */
-_ol_geom_flat_intersectsextent_.linearRing = function(flatCoordinates, offset, end, stride, extent) {
-  if (_ol_geom_flat_intersectsextent_.lineString(
+export function intersectsLinearRing(flatCoordinates, offset, end, stride, extent) {
+  if (intersectsLineString(
     flatCoordinates, offset, end, stride, extent)) {
     return true;
   }
@@ -91,7 +90,7 @@ _ol_geom_flat_intersectsextent_.linearRing = function(flatCoordinates, offset, e
     return true;
   }
   return false;
-};
+}
 
 
 /**
@@ -102,8 +101,8 @@ _ol_geom_flat_intersectsextent_.linearRing = function(flatCoordinates, offset, e
  * @param {ol.Extent} extent Extent.
  * @return {boolean} True if the geometry and the extent intersect.
  */
-_ol_geom_flat_intersectsextent_.linearRings = function(flatCoordinates, offset, ends, stride, extent) {
-  if (!_ol_geom_flat_intersectsextent_.linearRing(
+export function intersectsLinearRingArray(flatCoordinates, offset, ends, stride, extent) {
+  if (!intersectsLinearRing(
     flatCoordinates, offset, ends[0], stride, extent)) {
     return false;
   }
@@ -116,7 +115,7 @@ _ol_geom_flat_intersectsextent_.linearRings = function(flatCoordinates, offset,
     }
   }
   return true;
-};
+}
 
 
 /**
@@ -127,15 +126,14 @@ _ol_geom_flat_intersectsextent_.linearRings = function(flatCoordinates, offset,
  * @param {ol.Extent} extent Extent.
  * @return {boolean} True if the geometry and the extent intersect.
  */
-_ol_geom_flat_intersectsextent_.linearRingss = function(flatCoordinates, offset, endss, stride, extent) {
+export function intersectsLinearRingMultiArray(flatCoordinates, offset, endss, stride, extent) {
   for (let i = 0, ii = endss.length; i < ii; ++i) {
     const ends = endss[i];
-    if (_ol_geom_flat_intersectsextent_.linearRings(
+    if (intersectsLinearRingArray(
       flatCoordinates, offset, ends, stride, extent)) {
       return true;
     }
     offset = ends[ends.length - 1];
   }
   return false;
-};
-export default _ol_geom_flat_intersectsextent_;
+}
diff --git a/test/spec/ol/geom/flat/intersectsextent.test.js b/test/spec/ol/geom/flat/intersectsextent.test.js
index ea7f7cd1c6..5daa17edcc 100644
--- a/test/spec/ol/geom/flat/intersectsextent.test.js
+++ b/test/spec/ol/geom/flat/intersectsextent.test.js
@@ -1,4 +1,4 @@
-import _ol_geom_flat_intersectsextent_ from '../../../../../src/ol/geom/flat/intersectsextent.js';
+import {intersectsLinearRing, intersectsLineString} from '../../../../../src/ol/geom/flat/intersectsextent.js';
 
 
 describe('ol.geom.flat.intersectsextent', function() {
@@ -11,7 +11,7 @@ describe('ol.geom.flat.intersectsextent', function() {
     describe('linestring envelope does not intersect the extent', function() {
       it('returns false', function() {
         const extent = [3, 3, 4, 4];
-        const r = _ol_geom_flat_intersectsextent_.lineString(
+        const r = intersectsLineString(
           flatCoordinates, 0, flatCoordinates.length, 2, extent);
         expect(r).to.be(false);
       });
@@ -19,7 +19,7 @@ describe('ol.geom.flat.intersectsextent', function() {
     describe('linestring envelope within the extent', function() {
       it('returns true', function() {
         const extent = [-1, -1, 3, 3];
-        const r = _ol_geom_flat_intersectsextent_.lineString(
+        const r = intersectsLineString(
           flatCoordinates, 0, flatCoordinates.length, 2, extent);
         expect(r).to.be(true);
       });
@@ -28,7 +28,7 @@ describe('ol.geom.flat.intersectsextent', function() {
       function() {
         it('returns true', function() {
           const extent = [-0.1, 0.1, 2.1, 0.1];
-          const r = _ol_geom_flat_intersectsextent_.lineString(
+          const r = intersectsLineString(
             flatCoordinates, 0, flatCoordinates.length, 2, extent);
           expect(r).to.be(true);
         });
@@ -36,7 +36,7 @@ describe('ol.geom.flat.intersectsextent', function() {
     describe('a segment intersects the extent', function() {
       it('returns true', function() {
         const extent = [-0.5, -0.5, 0.5, 0.5];
-        const r = _ol_geom_flat_intersectsextent_.lineString(
+        const r = intersectsLineString(
           flatCoordinates, 0, flatCoordinates.length, 2, extent);
         expect(r).to.be(true);
       });
@@ -44,13 +44,13 @@ describe('ol.geom.flat.intersectsextent', function() {
     describe('no segments intersect the extent', function() {
       it('returns false', function() {
         const extent = [0.5, 1.5, 1, 1.75];
-        const r = _ol_geom_flat_intersectsextent_.lineString(
+        const r = intersectsLineString(
           flatCoordinates, 0, flatCoordinates.length, 2, extent);
         expect(r).to.be(false);
       });
       it('returns false', function() {
         const extent = [1, 0.25, 1.5, 0.5];
-        const r = _ol_geom_flat_intersectsextent_.lineString(
+        const r = intersectsLineString(
           flatCoordinates, 0, flatCoordinates.length, 2, extent);
         expect(r).to.be(false);
       });
@@ -65,7 +65,7 @@ describe('ol.geom.flat.intersectsextent', function() {
     describe('boundary intersects the extent', function() {
       it('returns true', function() {
         const extent = [1.5, 0.0, 2.5, 1.0];
-        const r = _ol_geom_flat_intersectsextent_.linearRing(
+        const r = intersectsLinearRing(
           flatCoordinates, 0, flatCoordinates.length, 2, extent);
         expect(r).to.be(true);
       });
@@ -75,7 +75,7 @@ describe('ol.geom.flat.intersectsextent', function() {
     function() {
       it('returns false', function() {
         const extent = [2.0, 0.5, 3, 1.5];
-        const r = _ol_geom_flat_intersectsextent_.linearRing(
+        const r = intersectsLinearRing(
           flatCoordinates, 0, flatCoordinates.length, 2, extent);
         expect(r).to.be(false);
       });
@@ -83,7 +83,7 @@ describe('ol.geom.flat.intersectsextent', function() {
     describe('ring contains the extent', function() {
       it('returns true', function() {
         const extent = [0.75, -0.25, 1.25, 0.25];
-        const r = _ol_geom_flat_intersectsextent_.linearRing(
+        const r = intersectsLinearRing(
           flatCoordinates, 0, flatCoordinates.length, 2, extent);
         expect(r).to.be(true);
       });