diff --git a/src/ol/reproj/Image.js b/src/ol/reproj/Image.js
index 3a2731c260..3002c1b23f 100644
--- a/src/ol/reproj/Image.js
+++ b/src/ol/reproj/Image.js
@@ -11,6 +11,12 @@ import {getCenter, getIntersection, getHeight, getWidth} from '../extent.js';
 import {calculateSourceResolution, render as renderReprojected} from '../reproj.js';
 import Triangulation from '../reproj/Triangulation.js';
 
+
+/**
+ * @typedef {function(module:ol/extent~Extent, number, number) : module:ol/ImageBase~ImageBase} FunctionType
+ */
+
+
 /**
  * @classdesc
  * Class encapsulating single reprojected image.
@@ -23,7 +29,7 @@ import Triangulation from '../reproj/Triangulation.js';
  * @param {module:ol/extent~Extent} targetExtent Target extent.
  * @param {number} targetResolution Target resolution.
  * @param {number} pixelRatio Pixel ratio.
- * @param {ol.ReprojImageFunctionType} getImageFunction
+ * @param {module:ol/reproj/Image~FunctionType} getImageFunction
  *     Function returning source images (extent, resolution, pixelRatio).
  */
 const ReprojImage = function(sourceProj, targetProj,
diff --git a/src/ol/reproj/Tile.js b/src/ol/reproj/Tile.js
index d66fd38c59..dd98c8fb97 100644
--- a/src/ol/reproj/Tile.js
+++ b/src/ol/reproj/Tile.js
@@ -12,6 +12,12 @@ import {clamp} from '../math.js';
 import {calculateSourceResolution, render as renderReprojected} from '../reproj.js';
 import Triangulation from '../reproj/Triangulation.js';
 
+
+/**
+ * @typedef {function(number, number, number, number) : module:ol/Tile~Tile} FunctionType
+ */
+
+
 /**
  * @classdesc
  * Class encapsulating single reprojected tile.
@@ -27,7 +33,7 @@ import Triangulation from '../reproj/Triangulation.js';
  * @param {module:ol/tilecoord~TileCoord} wrappedTileCoord Coordinate of the tile wrapped in X.
  * @param {number} pixelRatio Pixel ratio.
  * @param {number} gutter Gutter of the source tiles.
- * @param {ol.ReprojTileFunctionType} getTileFunction
+ * @param {module:ol/reproj/Tile~FunctionType} getTileFunction
  *     Function returning source tiles (z, x, y, pixelRatio).
  * @param {number=} opt_errorThreshold Acceptable reprojection error (in px).
  * @param {boolean=} opt_renderEdges Render reprojection edges.
diff --git a/src/ol/reproj/Triangulation.js b/src/ol/reproj/Triangulation.js
index 3e41359e13..bcb6e4d121 100644
--- a/src/ol/reproj/Triangulation.js
+++ b/src/ol/reproj/Triangulation.js
@@ -7,6 +7,14 @@ import {modulo} from '../math.js';
 import {getTransform} from '../proj.js';
 
 
+/**
+ * Single triangle; consists of 3 source points and 3 target points.
+ * @typedef {Object} Triangle
+ * @property {Array.<module:ol/coordinate~Coordinate>} source
+ * @property {Array.<module:ol/coordinate~Coordinate>} target
+ */
+
+
 /**
  * Maximum number of subdivision steps during raster reprojection triangulation.
  * Prevents high memory usage and large number of proj4 calls (for certain
@@ -85,7 +93,7 @@ const Triangulation = function(sourceProj, targetProj, targetExtent,
   this.errorThresholdSquared_ = errorThreshold * errorThreshold;
 
   /**
-   * @type {Array.<ol.ReprojTriangle>}
+   * @type {Array.<module:ol/reproj/Triangulation~Triangle>}
    * @private
    */
   this.triangles_ = [];
@@ -340,7 +348,7 @@ Triangulation.prototype.calculateSourceExtent = function() {
 
 
 /**
- * @return {Array.<ol.ReprojTriangle>} Array of the calculated triangles.
+ * @return {Array.<module:ol/reproj/Triangulation~Triangle>} Array of the calculated triangles.
  */
 Triangulation.prototype.getTriangles = function() {
   return this.triangles_;
diff --git a/src/ol/typedefs.js b/src/ol/typedefs.js
index a1500d291e..c310d79f04 100644
--- a/src/ol/typedefs.js
+++ b/src/ol/typedefs.js
@@ -181,27 +181,6 @@ ol.RasterOperation;
 ol.RegularShapeRenderOptions;
 
 
-/**
- * @typedef {function(module:ol/extent~Extent, number, number) : module:ol/ImageBase~ImageBase}
- */
-ol.ReprojImageFunctionType;
-
-
-/**
- * @typedef {function(number, number, number, number) : module:ol/Tile~Tile}
- */
-ol.ReprojTileFunctionType;
-
-
-/**
- * Single triangle; consists of 3 source points and 3 target points.
- *
- * @typedef {{source: Array.<module:ol/coordinate~Coordinate>,
- *            target: Array.<module:ol/coordinate~Coordinate>}}
- */
-ol.ReprojTriangle;
-
-
 /**
  * Number of features; bounds/extent.
  * @typedef {{numberOfFeatures: number,