diff --git a/src/ol/format/EsriJSON.js b/src/ol/format/EsriJSON.js
index f2158245c4..f56d27b99d 100644
--- a/src/ol/format/EsriJSON.js
+++ b/src/ol/format/EsriJSON.js
@@ -16,7 +16,7 @@ import MultiPoint from '../geom/MultiPoint.js';
 import MultiPolygon from '../geom/MultiPolygon.js';
 import Point from '../geom/Point.js';
 import Polygon from '../geom/Polygon.js';
-import _ol_geom_flat_deflate_ from '../geom/flat/deflate.js';
+import {deflateCoordinates} from '../geom/flat/deflate.js';
 import _ol_geom_flat_orient_ from '../geom/flat/orient.js';
 import {assign, isEmpty} from '../obj.js';
 import {get as getProjection} from '../proj.js';
@@ -132,7 +132,7 @@ function convertRings(rings, layout) {
   let i, ii;
   for (i = 0, ii = rings.length; i < ii; ++i) {
     flatRing.length = 0;
-    _ol_geom_flat_deflate_.coordinates(flatRing, 0, rings[i], layout.length);
+    deflateCoordinates(flatRing, 0, rings[i], layout.length);
     // is this ring an outer ring? is it clockwise?
     const clockwise = _ol_geom_flat_orient_.linearRingIsClockwise(flatRing, 0,
       flatRing.length, layout.length);
diff --git a/src/ol/geom/Circle.js b/src/ol/geom/Circle.js
index 9c6de67a51..4a4fd062f1 100644
--- a/src/ol/geom/Circle.js
+++ b/src/ol/geom/Circle.js
@@ -6,7 +6,7 @@ import {createOrUpdate, forEachCorner, intersects} from '../extent.js';
 import GeometryLayout from '../geom/GeometryLayout.js';
 import GeometryType from '../geom/GeometryType.js';
 import SimpleGeometry from '../geom/SimpleGeometry.js';
-import _ol_geom_flat_deflate_ from '../geom/flat/deflate.js';
+import {deflateCoordinate} from '../geom/flat/deflate.js';
 
 /**
  * @classdesc
@@ -192,7 +192,7 @@ Circle.prototype.setCenterAndRadius = function(center, radius, opt_layout) {
     }
     /** @type {Array.<number>} */
     const flatCoordinates = this.flatCoordinates;
-    let offset = _ol_geom_flat_deflate_.coordinate(
+    let offset = deflateCoordinate(
       flatCoordinates, 0, center, this.stride);
     flatCoordinates[offset++] = flatCoordinates[0] + radius;
     for (let i = 1, ii = this.stride; i < ii; ++i) {
diff --git a/src/ol/geom/LineString.js b/src/ol/geom/LineString.js
index da50f9bb0a..16ca750acb 100644
--- a/src/ol/geom/LineString.js
+++ b/src/ol/geom/LineString.js
@@ -8,7 +8,7 @@ import GeometryLayout from '../geom/GeometryLayout.js';
 import GeometryType from '../geom/GeometryType.js';
 import SimpleGeometry from '../geom/SimpleGeometry.js';
 import _ol_geom_flat_closest_ from '../geom/flat/closest.js';
-import _ol_geom_flat_deflate_ from '../geom/flat/deflate.js';
+import {deflateCoordinates} from '../geom/flat/deflate.js';
 import {inflateCoordinates} from '../geom/flat/inflate.js';
 import _ol_geom_flat_interpolate_ from '../geom/flat/interpolate.js';
 import _ol_geom_flat_intersectsextent_ from '../geom/flat/intersectsextent.js';
@@ -250,7 +250,7 @@ LineString.prototype.setCoordinates = function(coordinates, opt_layout) {
     if (!this.flatCoordinates) {
       this.flatCoordinates = [];
     }
-    this.flatCoordinates.length = _ol_geom_flat_deflate_.coordinates(
+    this.flatCoordinates.length = deflateCoordinates(
       this.flatCoordinates, 0, coordinates, this.stride);
     this.changed();
   }
diff --git a/src/ol/geom/LinearRing.js b/src/ol/geom/LinearRing.js
index 2acac977df..4346897b42 100644
--- a/src/ol/geom/LinearRing.js
+++ b/src/ol/geom/LinearRing.js
@@ -8,7 +8,7 @@ import GeometryType from '../geom/GeometryType.js';
 import SimpleGeometry from '../geom/SimpleGeometry.js';
 import {linearRing as linearRingArea} from '../geom/flat/area.js';
 import _ol_geom_flat_closest_ from '../geom/flat/closest.js';
-import _ol_geom_flat_deflate_ from '../geom/flat/deflate.js';
+import {deflateCoordinates} from '../geom/flat/deflate.js';
 import {inflateCoordinates} from '../geom/flat/inflate.js';
 import _ol_geom_flat_simplify_ from '../geom/flat/simplify.js';
 
@@ -144,7 +144,7 @@ LinearRing.prototype.setCoordinates = function(coordinates, opt_layout) {
     if (!this.flatCoordinates) {
       this.flatCoordinates = [];
     }
-    this.flatCoordinates.length = _ol_geom_flat_deflate_.coordinates(
+    this.flatCoordinates.length = deflateCoordinates(
       this.flatCoordinates, 0, coordinates, this.stride);
     this.changed();
   }
diff --git a/src/ol/geom/MultiLineString.js b/src/ol/geom/MultiLineString.js
index 1e6e2f4179..de620b2f28 100644
--- a/src/ol/geom/MultiLineString.js
+++ b/src/ol/geom/MultiLineString.js
@@ -9,7 +9,7 @@ import GeometryType from '../geom/GeometryType.js';
 import LineString from '../geom/LineString.js';
 import SimpleGeometry from '../geom/SimpleGeometry.js';
 import _ol_geom_flat_closest_ from '../geom/flat/closest.js';
-import _ol_geom_flat_deflate_ from '../geom/flat/deflate.js';
+import {deflateCoordinatesArray} from '../geom/flat/deflate.js';
 import {inflateCoordinatesArray} from '../geom/flat/inflate.js';
 import _ol_geom_flat_interpolate_ from '../geom/flat/interpolate.js';
 import _ol_geom_flat_intersectsextent_ from '../geom/flat/intersectsextent.js';
@@ -267,7 +267,7 @@ MultiLineString.prototype.setCoordinates = function(coordinates, opt_layout) {
     if (!this.flatCoordinates) {
       this.flatCoordinates = [];
     }
-    const ends = _ol_geom_flat_deflate_.coordinatess(
+    const ends = deflateCoordinatesArray(
       this.flatCoordinates, 0, coordinates, this.stride, this.ends_);
     this.flatCoordinates.length = ends.length === 0 ? 0 : ends[ends.length - 1];
     this.changed();
diff --git a/src/ol/geom/MultiPoint.js b/src/ol/geom/MultiPoint.js
index d5ed8a9ff0..e2b0f9ae5a 100644
--- a/src/ol/geom/MultiPoint.js
+++ b/src/ol/geom/MultiPoint.js
@@ -8,7 +8,7 @@ import GeometryLayout from '../geom/GeometryLayout.js';
 import GeometryType from '../geom/GeometryType.js';
 import Point from '../geom/Point.js';
 import SimpleGeometry from '../geom/SimpleGeometry.js';
-import _ol_geom_flat_deflate_ from '../geom/flat/deflate.js';
+import {deflateCoordinates} from '../geom/flat/deflate.js';
 import {inflateCoordinates} from '../geom/flat/inflate.js';
 import {squaredDistance as squaredDx} from '../math.js';
 
@@ -174,7 +174,7 @@ MultiPoint.prototype.setCoordinates = function(coordinates, opt_layout) {
     if (!this.flatCoordinates) {
       this.flatCoordinates = [];
     }
-    this.flatCoordinates.length = _ol_geom_flat_deflate_.coordinates(
+    this.flatCoordinates.length = deflateCoordinates(
       this.flatCoordinates, 0, coordinates, this.stride);
     this.changed();
   }
diff --git a/src/ol/geom/MultiPolygon.js b/src/ol/geom/MultiPolygon.js
index a3b539b748..517e3b9773 100644
--- a/src/ol/geom/MultiPolygon.js
+++ b/src/ol/geom/MultiPolygon.js
@@ -13,7 +13,7 @@ import {linearRingss as linearRingssArea} from '../geom/flat/area.js';
 import {linearRingss as linearRingssCenter} from '../geom/flat/center.js';
 import _ol_geom_flat_closest_ from '../geom/flat/closest.js';
 import {linearRingssContainsXY} from '../geom/flat/contains.js';
-import _ol_geom_flat_deflate_ from '../geom/flat/deflate.js';
+import {deflateMultiCoordinatesArray} from '../geom/flat/deflate.js';
 import {inflateMultiCoordinatesArray} from '../geom/flat/inflate.js';
 import _ol_geom_flat_interiorpoint_ from '../geom/flat/interiorpoint.js';
 import _ol_geom_flat_intersectsextent_ from '../geom/flat/intersectsextent.js';
@@ -364,7 +364,7 @@ MultiPolygon.prototype.setCoordinates = function(coordinates, opt_layout) {
     if (!this.flatCoordinates) {
       this.flatCoordinates = [];
     }
-    const endss = _ol_geom_flat_deflate_.coordinatesss(
+    const endss = deflateMultiCoordinatesArray(
       this.flatCoordinates, 0, coordinates, this.stride, this.endss_);
     if (endss.length === 0) {
       this.flatCoordinates.length = 0;
diff --git a/src/ol/geom/Point.js b/src/ol/geom/Point.js
index 931ac44f69..9d30635bc7 100644
--- a/src/ol/geom/Point.js
+++ b/src/ol/geom/Point.js
@@ -6,7 +6,7 @@ import {createOrUpdateFromCoordinate, containsXY} from '../extent.js';
 import GeometryLayout from '../geom/GeometryLayout.js';
 import GeometryType from '../geom/GeometryType.js';
 import SimpleGeometry from '../geom/SimpleGeometry.js';
-import _ol_geom_flat_deflate_ from '../geom/flat/deflate.js';
+import {deflateCoordinate} from '../geom/flat/deflate.js';
 import {squaredDistance as squaredDx} from '../math.js';
 
 /**
@@ -108,7 +108,7 @@ Point.prototype.setCoordinates = function(coordinates, opt_layout) {
     if (!this.flatCoordinates) {
       this.flatCoordinates = [];
     }
-    this.flatCoordinates.length = _ol_geom_flat_deflate_.coordinate(
+    this.flatCoordinates.length = deflateCoordinate(
       this.flatCoordinates, 0, coordinates, this.stride);
     this.changed();
   }
diff --git a/src/ol/geom/Polygon.js b/src/ol/geom/Polygon.js
index 6620dbaf20..c345404903 100644
--- a/src/ol/geom/Polygon.js
+++ b/src/ol/geom/Polygon.js
@@ -13,7 +13,7 @@ import {offset as sphereOffset} from '../sphere.js';
 import {linearRings as linearRingsArea} from '../geom/flat/area.js';
 import _ol_geom_flat_closest_ from '../geom/flat/closest.js';
 import {linearRingsContainsXY} from '../geom/flat/contains.js';
-import _ol_geom_flat_deflate_ from '../geom/flat/deflate.js';
+import {deflateCoordinatesArray} from '../geom/flat/deflate.js';
 import {inflateCoordinatesArray} from '../geom/flat/inflate.js';
 import _ol_geom_flat_interiorpoint_ from '../geom/flat/interiorpoint.js';
 import _ol_geom_flat_intersectsextent_ from '../geom/flat/intersectsextent.js';
@@ -345,7 +345,7 @@ Polygon.prototype.setCoordinates = function(coordinates, opt_layout) {
     if (!this.flatCoordinates) {
       this.flatCoordinates = [];
     }
-    const ends = _ol_geom_flat_deflate_.coordinatess(
+    const ends = deflateCoordinatesArray(
       this.flatCoordinates, 0, coordinates, this.stride, this.ends_);
     this.flatCoordinates.length = ends.length === 0 ? 0 : ends[ends.length - 1];
     this.changed();
diff --git a/src/ol/geom/flat/deflate.js b/src/ol/geom/flat/deflate.js
index 71539a5dca..1295c16a71 100644
--- a/src/ol/geom/flat/deflate.js
+++ b/src/ol/geom/flat/deflate.js
@@ -1,7 +1,6 @@
 /**
  * @module ol/geom/flat/deflate
  */
-const _ol_geom_flat_deflate_ = {};
 
 
 /**
@@ -11,12 +10,12 @@ const _ol_geom_flat_deflate_ = {};
  * @param {number} stride Stride.
  * @return {number} offset Offset.
  */
-_ol_geom_flat_deflate_.coordinate = function(flatCoordinates, offset, coordinate, stride) {
+export function deflateCoordinate(flatCoordinates, offset, coordinate, stride) {
   for (let i = 0, ii = coordinate.length; i < ii; ++i) {
     flatCoordinates[offset++] = coordinate[i];
   }
   return offset;
-};
+}
 
 
 /**
@@ -26,7 +25,7 @@ _ol_geom_flat_deflate_.coordinate = function(flatCoordinates, offset, coordinate
  * @param {number} stride Stride.
  * @return {number} offset Offset.
  */
-_ol_geom_flat_deflate_.coordinates = function(flatCoordinates, offset, coordinates, stride) {
+export function deflateCoordinates(flatCoordinates, offset, coordinates, stride) {
   for (let i = 0, ii = coordinates.length; i < ii; ++i) {
     const coordinate = coordinates[i];
     for (let j = 0; j < stride; ++j) {
@@ -34,7 +33,7 @@ _ol_geom_flat_deflate_.coordinates = function(flatCoordinates, offset, coordinat
     }
   }
   return offset;
-};
+}
 
 
 /**
@@ -45,18 +44,18 @@ _ol_geom_flat_deflate_.coordinates = function(flatCoordinates, offset, coordinat
  * @param {Array.<number>=} opt_ends Ends.
  * @return {Array.<number>} Ends.
  */
-_ol_geom_flat_deflate_.coordinatess = function(flatCoordinates, offset, coordinatess, stride, opt_ends) {
+export function deflateCoordinatesArray(flatCoordinates, offset, coordinatess, stride, opt_ends) {
   const ends = opt_ends ? opt_ends : [];
   let i = 0;
   for (let j = 0, jj = coordinatess.length; j < jj; ++j) {
-    const end = _ol_geom_flat_deflate_.coordinates(
+    const end = deflateCoordinates(
       flatCoordinates, offset, coordinatess[j], stride);
     ends[i++] = end;
     offset = end;
   }
   ends.length = i;
   return ends;
-};
+}
 
 
 /**
@@ -67,16 +66,15 @@ _ol_geom_flat_deflate_.coordinatess = function(flatCoordinates, offset, coordina
  * @param {Array.<Array.<number>>=} opt_endss Endss.
  * @return {Array.<Array.<number>>} Endss.
  */
-_ol_geom_flat_deflate_.coordinatesss = function(flatCoordinates, offset, coordinatesss, stride, opt_endss) {
+export function deflateMultiCoordinatesArray(flatCoordinates, offset, coordinatesss, stride, opt_endss) {
   const endss = opt_endss ? opt_endss : [];
   let i = 0;
   for (let j = 0, jj = coordinatesss.length; j < jj; ++j) {
-    const ends = _ol_geom_flat_deflate_.coordinatess(
+    const ends = deflateCoordinatesArray(
       flatCoordinates, offset, coordinatesss[j], stride, endss[i]);
     endss[i++] = ends;
     offset = ends[ends.length - 1];
   }
   endss.length = i;
   return endss;
-};
-export default _ol_geom_flat_deflate_;
+}
diff --git a/test/spec/ol/geom/flat/deflate.test.js b/test/spec/ol/geom/flat/deflate.test.js
index 1b88ec8638..a7f34e2f91 100644
--- a/test/spec/ol/geom/flat/deflate.test.js
+++ b/test/spec/ol/geom/flat/deflate.test.js
@@ -1,4 +1,4 @@
-import _ol_geom_flat_deflate_ from '../../../../../src/ol/geom/flat/deflate.js';
+import {deflateCoordinates, deflateCoordinatesArray} from '../../../../../src/ol/geom/flat/deflate.js';
 
 
 describe('ol.geom.flat.deflate', function() {
@@ -11,7 +11,7 @@ describe('ol.geom.flat.deflate', function() {
     });
 
     it('flattens coordinates', function() {
-      const offset = _ol_geom_flat_deflate_.coordinates(
+      const offset = deflateCoordinates(
         flatCoordinates, 0, [[1, 2], [3, 4]], 2);
       expect(offset).to.be(4);
       expect(flatCoordinates).to.eql([1, 2, 3, 4]);
@@ -27,7 +27,7 @@ describe('ol.geom.flat.deflate', function() {
     });
 
     it('flattens arrays of coordinates', function() {
-      const ends = _ol_geom_flat_deflate_.coordinatess(flatCoordinates, 0,
+      const ends = deflateCoordinatesArray(flatCoordinates, 0,
         [[[1, 2], [3, 4]], [[5, 6], [7, 8]]], 2);
       expect(ends).to.eql([4, 8]);
       expect(flatCoordinates).to.eql([1, 2, 3, 4, 5, 6, 7, 8]);