diff --git a/examples/d3.js b/examples/d3.js
index 193afd771f..050100bc18 100644
--- a/examples/d3.js
+++ b/examples/d3.js
@@ -37,7 +37,7 @@ d3.json('data/topojson/us.json', function(error, us) {
    * @param {number} resolution Resolution.
    * @param {number} pixelRatio Pixel ratio.
    * @param {ol.Size} size Size.
-   * @param {ol.proj.Projection} projection Projection.
+   * @param {module:ol/proj/Projection~Projection} projection Projection.
    * @return {HTMLCanvasElement} A canvas element.
    */
   const canvasFunction = function(extent, resolution, pixelRatio, size, projection) {
diff --git a/examples/wms-custom-proj.js b/examples/wms-custom-proj.js
index 80bf4e5cc2..8f80e487de 100644
--- a/examples/wms-custom-proj.js
+++ b/examples/wms-custom-proj.js
@@ -10,7 +10,7 @@ import TileWMS from '../src/ol/source/TileWMS.js';
 
 // By default OpenLayers does not know about the EPSG:21781 (Swiss) projection.
 // So we create a projection instance for EPSG:21781 and pass it to
-// ol.proj.addProjection to make it available to the library for lookup by its
+// ol/proj~addProjection to make it available to the library for lookup by its
 // code.
 
 const projection = new Projection({
@@ -23,7 +23,7 @@ const projection = new Projection({
 addProjection(projection);
 
 // We also declare EPSG:21781/EPSG:4326 transform functions. These functions
-// are necessary for the ScaleLine control and when calling ol.proj.transform
+// are necessary for the ScaleLine control and when calling ol/proj~transform
 // for setting the view's initial center (see below).
 
 addCoordinateTransforms('EPSG:4326', projection,
diff --git a/externs/oli.js b/externs/oli.js
index dfaf33c7dd..57a93bcbcf 100644
--- a/externs/oli.js
+++ b/externs/oli.js
@@ -254,7 +254,7 @@ oli.interaction.DragAndDropEvent.prototype.features;
 
 
 /**
- * @type {ol.proj.Projection|undefined}
+ * @type {module:ol/proj/Projection~Projection|undefined}
  */
 oli.interaction.DragAndDropEvent.prototype.projection;
 
diff --git a/externs/olx.js b/externs/olx.js
index b35f5c1b43..346e1563ad 100644
--- a/externs/olx.js
+++ b/externs/olx.js
@@ -2885,7 +2885,7 @@ olx.source.ImageCanvasOptions.prototype.attributions;
  * Canvas function. The function returning the canvas element used by the source
  * as an image. The arguments passed to the function are: `{ol.Extent}` the
  * image extent, `{number}` the image resolution, `{number}` the device pixel
- * ratio, `{ol.Size}` the image size, and `{ol.proj.Projection}` the image
+ * ratio, `{ol.Size}` the image size, and `{module:ol/proj/Projection~Projection}` the image
  * projection. The canvas returned by this function is cached by the source. If
  * the value returned by the function is later changed then
  * `dispatchChangeEvent` should be called on the source for the source to
@@ -5385,7 +5385,7 @@ olx.tilegrid.XYZOptions.prototype.tileSize;
 
 /**
  * @typedef {{center: ol.Coordinate,
- *     projection: ol.proj.Projection,
+ *     projection: module:ol/proj/Projection~Projection,
  *     resolution: number,
  *     rotation: number,
  *     zoom: number}}
@@ -5401,7 +5401,7 @@ olx.ViewState.prototype.center;
 
 
 /**
- * @type {ol.proj.Projection}
+ * @type {module:ol/proj/Projection~Projection}
  * @api
  */
 olx.ViewState.prototype.projection;
diff --git a/externs/xol.js b/externs/xol.js
index c67d807fb3..ce10605ab1 100644
--- a/externs/xol.js
+++ b/externs/xol.js
@@ -755,7 +755,7 @@
  * @property {ol.CanvasFunctionType} canvasFunction Canvas function. The function returning the canvas element used by the source
  * as an image. The arguments passed to the function are: `{ol.Extent}` the
  * image extent, `{number}` the image resolution, `{number}` the device pixel
- * ratio, `{ol.Size}` the image size, and `{ol.proj.Projection}` the image
+ * ratio, `{ol.Size}` the image size, and `{module:ol/proj/Projection~Projection}` the image
  * projection. The canvas returned by this function is cached by the source. If
  * the value returned by the function is later changed then
  * `dispatchChangeEvent` should be called on the source for the source to
@@ -1453,7 +1453,7 @@
 /**
  * @typedef {Object} ViewState
  * @property {ol.Coordinate} center 
- * @property {ol.proj.Projection} projection 
+ * @property {module:ol/proj/Projection~Projection} projection 
  * @property {number} resolution 
  * @property {number} rotation 
  * @property {number} zoom The current zoom level.
diff --git a/src/ol/control/MousePosition.js b/src/ol/control/MousePosition.js
index 5fc94ade3c..43a4c30cb1 100644
--- a/src/ol/control/MousePosition.js
+++ b/src/ol/control/MousePosition.js
@@ -89,7 +89,7 @@ const MousePosition = function(opt_options) {
 
   /**
    * @private
-   * @type {ol.proj.Projection}
+   * @type {module:ol/proj/Projection~Projection}
    */
   this.mapProjection_ = null;
 
@@ -153,13 +153,13 @@ MousePosition.prototype.getCoordinateFormat = function() {
 
 /**
  * Return the projection that is used to report the mouse position.
- * @return {ol.proj.Projection|undefined} The projection to report mouse
+ * @return {module:ol/proj/Projection~Projection|undefined} The projection to report mouse
  *     position in.
  * @observable
  * @api
  */
 MousePosition.prototype.getProjection = function() {
-  return /** @type {ol.proj.Projection|undefined} */ (this.get(PROJECTION));
+  return /** @type {module:ol/proj/Projection~Projection|undefined} */ (this.get(PROJECTION));
 };
 
 
diff --git a/src/ol/format/EsriJSON.js b/src/ol/format/EsriJSON.js
index 2084169ba4..540878db28 100644
--- a/src/ol/format/EsriJSON.js
+++ b/src/ol/format/EsriJSON.js
@@ -500,7 +500,7 @@ EsriJSON.prototype.readGeometryFromObject = function(object, opt_options) {
  *
  * @function
  * @param {ArrayBuffer|Document|Node|Object|string} source Source.
- * @return {ol.proj.Projection} Projection.
+ * @return {module:ol/proj/Projection~Projection} Projection.
  * @api
  */
 EsriJSON.prototype.readProjection;
diff --git a/src/ol/format/Feature.js b/src/ol/format/Feature.js
index c270663e25..fbc6a4969f 100644
--- a/src/ol/format/Feature.js
+++ b/src/ol/format/Feature.js
@@ -64,13 +64,13 @@ const FeatureFormat = function() {
 
   /**
    * @protected
-   * @type {ol.proj.Projection}
+   * @type {module:ol/proj/Projection~Projection}
    */
   this.defaultDataProjection = null;
 
   /**
    * @protected
-   * @type {ol.proj.Projection}
+   * @type {module:ol/proj/Projection~Projection}
    */
   this.defaultFeatureProjection = null;
 
@@ -168,7 +168,7 @@ FeatureFormat.prototype.readGeometry = function(source, opt_options) {};
  *
  * @abstract
  * @param {Document|Node|Object|string} source Source.
- * @return {ol.proj.Projection} Projection.
+ * @return {module:ol/proj/Projection~Projection} Projection.
  */
 FeatureFormat.prototype.readProjection = function(source) {};
 
diff --git a/src/ol/format/GPX.js b/src/ol/format/GPX.js
index 8d75f983bd..d428bb1eec 100644
--- a/src/ol/format/GPX.js
+++ b/src/ol/format/GPX.js
@@ -705,7 +705,7 @@ GPX.prototype.readFeaturesFromNode = function(node, opt_options) {
  *
  * @function
  * @param {Document|Node|Object|string} source Source.
- * @return {ol.proj.Projection} Projection.
+ * @return {module:ol/proj/Projection~Projection} Projection.
  * @api
  */
 GPX.prototype.readProjection;
diff --git a/src/ol/format/GeoJSON.js b/src/ol/format/GeoJSON.js
index b3333e7e9c..2de79e91ad 100644
--- a/src/ol/format/GeoJSON.js
+++ b/src/ol/format/GeoJSON.js
@@ -438,7 +438,7 @@ GeoJSON.prototype.readGeometryFromObject = function(object, opt_options) {
  *
  * @function
  * @param {Document|Node|Object|string} source Source.
- * @return {ol.proj.Projection} Projection.
+ * @return {module:ol/proj/Projection~Projection} Projection.
  * @api
  */
 GeoJSON.prototype.readProjection;
@@ -460,7 +460,7 @@ GeoJSON.prototype.readProjectionFromObject = function(object) {
   } else {
     projection = this.defaultDataProjection;
   }
-  return /** @type {ol.proj.Projection} */ (projection);
+  return /** @type {module:ol/proj/Projection~Projection} */ (projection);
 };
 
 
diff --git a/src/ol/format/IGC.js b/src/ol/format/IGC.js
index ab0a1edac7..52515276be 100644
--- a/src/ol/format/IGC.js
+++ b/src/ol/format/IGC.js
@@ -209,7 +209,7 @@ IGC.prototype.readFeaturesFromText = function(text, opt_options) {
  *
  * @function
  * @param {Document|Node|Object|string} source Source.
- * @return {ol.proj.Projection} Projection.
+ * @return {module:ol/proj/Projection~Projection} Projection.
  * @api
  */
 IGC.prototype.readProjection;
diff --git a/src/ol/format/JSONFeature.js b/src/ol/format/JSONFeature.js
index c4094f8183..0b776d75a1 100644
--- a/src/ol/format/JSONFeature.js
+++ b/src/ol/format/JSONFeature.js
@@ -115,7 +115,7 @@ JSONFeature.prototype.readProjection = function(source) {
  * @abstract
  * @param {Object} object Object.
  * @protected
- * @return {ol.proj.Projection} Projection.
+ * @return {module:ol/proj/Projection~Projection} Projection.
  */
 JSONFeature.prototype.readProjectionFromObject = function(object) {};
 
diff --git a/src/ol/format/KML.js b/src/ol/format/KML.js
index 90e218a2bf..2470fd18b2 100644
--- a/src/ol/format/KML.js
+++ b/src/ol/format/KML.js
@@ -2061,7 +2061,7 @@ KML.prototype.readRegionFromNode = function(node) {
  *
  * @function
  * @param {Document|Node|Object|string} source Source.
- * @return {ol.proj.Projection} Projection.
+ * @return {module:ol/proj/Projection~Projection} Projection.
  * @api
  */
 KML.prototype.readProjection;
diff --git a/src/ol/format/MVT.js b/src/ol/format/MVT.js
index 776b6a4ff4..0b29f442e7 100644
--- a/src/ol/format/MVT.js
+++ b/src/ol/format/MVT.js
@@ -54,7 +54,7 @@ const MVT = function(opt_options) {
   const options = opt_options ? opt_options : {};
 
   /**
-   * @type {ol.proj.Projection}
+   * @type {module:ol/proj/Projection~Projection}
    */
   this.defaultDataProjection = new Projection({
     code: '',
diff --git a/src/ol/format/OSMXML.js b/src/ol/format/OSMXML.js
index 353935ae0e..517f6e0db3 100644
--- a/src/ol/format/OSMXML.js
+++ b/src/ol/format/OSMXML.js
@@ -201,7 +201,7 @@ OSMXML.prototype.readFeaturesFromNode = function(node, opt_options) {
  *
  * @function
  * @param {Document|Node|Object|string} source Source.
- * @return {ol.proj.Projection} Projection.
+ * @return {module:ol/proj/Projection~Projection} Projection.
  * @api
  */
 OSMXML.prototype.readProjection;
diff --git a/src/ol/format/Polyline.js b/src/ol/format/Polyline.js
index 36cf9e154f..2f5199dbaa 100644
--- a/src/ol/format/Polyline.js
+++ b/src/ol/format/Polyline.js
@@ -342,7 +342,7 @@ Polyline.prototype.readGeometryFromText = function(text, opt_options) {
  *
  * @function
  * @param {Document|Node|Object|string} source Source.
- * @return {ol.proj.Projection} Projection.
+ * @return {module:ol/proj/Projection~Projection} Projection.
  * @api
  */
 Polyline.prototype.readProjection;
diff --git a/src/ol/format/TextFeature.js b/src/ol/format/TextFeature.js
index ac28183b81..ba6b20a821 100644
--- a/src/ol/format/TextFeature.js
+++ b/src/ol/format/TextFeature.js
@@ -108,7 +108,7 @@ TextFeature.prototype.readProjection = function(source) {
 /**
  * @param {string} text Text.
  * @protected
- * @return {ol.proj.Projection} Projection.
+ * @return {module:ol/proj/Projection~Projection} Projection.
  */
 TextFeature.prototype.readProjectionFromText = function(text) {
   return this.defaultDataProjection;
diff --git a/src/ol/format/TopoJSON.js b/src/ol/format/TopoJSON.js
index 0fd2a33504..aff9581c0a 100644
--- a/src/ol/format/TopoJSON.js
+++ b/src/ol/format/TopoJSON.js
@@ -406,7 +406,7 @@ function transformVertex(vertex, scale, translate) {
  * Read the projection from a TopoJSON source.
  *
  * @param {Document|Node|Object|string} object Source.
- * @return {ol.proj.Projection} Projection.
+ * @return {module:ol/proj/Projection~Projection} Projection.
  * @override
  * @api
  */
diff --git a/src/ol/format/WFS.js b/src/ol/format/WFS.js
index 295e982db8..5bd5a6bd86 100644
--- a/src/ol/format/WFS.js
+++ b/src/ol/format/WFS.js
@@ -1069,7 +1069,7 @@ WFS.prototype.writeTransaction = function(inserts, updates, deletes, options) {
  *
  * @function
  * @param {Document|Node|Object|string} source Source.
- * @return {?ol.proj.Projection} Projection.
+ * @return {?module:ol/proj/Projection~Projection} Projection.
  * @api
  */
 WFS.prototype.readProjection;
diff --git a/src/ol/format/XMLFeature.js b/src/ol/format/XMLFeature.js
index 2eba7165cd..8967fd02b6 100644
--- a/src/ol/format/XMLFeature.js
+++ b/src/ol/format/XMLFeature.js
@@ -187,7 +187,7 @@ XMLFeature.prototype.readProjection = function(source) {
 /**
  * @param {Document} doc Document.
  * @protected
- * @return {ol.proj.Projection} Projection.
+ * @return {module:ol/proj/Projection~Projection} Projection.
  */
 XMLFeature.prototype.readProjectionFromDocument = function(doc) {
   return this.defaultDataProjection;
@@ -197,7 +197,7 @@ XMLFeature.prototype.readProjectionFromDocument = function(doc) {
 /**
  * @param {Node} node Node.
  * @protected
- * @return {ol.proj.Projection} Projection.
+ * @return {module:ol/proj/Projection~Projection} Projection.
  */
 XMLFeature.prototype.readProjectionFromNode = function(node) {
   return this.defaultDataProjection;
diff --git a/src/ol/geom/Circle.js b/src/ol/geom/Circle.js
index 600ccf1cc8..93ed0bdb6c 100644
--- a/src/ol/geom/Circle.js
+++ b/src/ol/geom/Circle.js
@@ -251,9 +251,9 @@ Circle.prototype.setRadius = function(radius) {
  * of the original circle.
  *
  * @param {module:ol/proj~ProjectionLike} source The current projection.  Can be a
- *     string identifier or a {@link ol.proj.Projection} object.
+ *     string identifier or a {@link module:ol/proj/Projection~Projection} object.
  * @param {module:ol/proj~ProjectionLike} destination The desired projection.  Can be a
- *     string identifier or a {@link ol.proj.Projection} object.
+ *     string identifier or a {@link module:ol/proj/Projection~Projection} object.
  * @return {module:ol/geom/Circle~Circle} This geometry.  Note that original geometry is
  *     modified in place.
  * @function
diff --git a/src/ol/geom/Geometry.js b/src/ol/geom/Geometry.js
index 65d30e5413..cdcb3f0b02 100644
--- a/src/ol/geom/Geometry.js
+++ b/src/ol/geom/Geometry.js
@@ -246,9 +246,9 @@ Geometry.prototype.translate = function(deltaX, deltaY) {};
  * then use this function on the clone.
  *
  * @param {module:ol/proj~ProjectionLike} source The current projection.  Can be a
- *     string identifier or a {@link ol.proj.Projection} object.
+ *     string identifier or a {@link module:ol/proj/Projection~Projection} object.
  * @param {module:ol/proj~ProjectionLike} destination The desired projection.  Can be a
- *     string identifier or a {@link ol.proj.Projection} object.
+ *     string identifier or a {@link module:ol/proj/Projection~Projection} object.
  * @return {module:ol/geom/Geometry~Geometry} This geometry.  Note that original geometry is
  *     modified in place.
  * @api
diff --git a/src/ol/geom/flat/geodesic.js b/src/ol/geom/flat/geodesic.js
index 0069a54a3c..8de234b33d 100644
--- a/src/ol/geom/flat/geodesic.js
+++ b/src/ol/geom/flat/geodesic.js
@@ -84,7 +84,7 @@ function line(interpolate, transform, squaredTolerance) {
  * @param {number} lat1 Latitude 1 in degrees.
  * @param {number} lon2 Longitude 2 in degrees.
  * @param {number} lat2 Latitude 2 in degrees.
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  * @param {number} squaredTolerance Squared tolerance.
  * @return {Array.<number>} Flat coordinates.
  */
@@ -128,7 +128,7 @@ export function greatCircleArc(lon1, lat1, lon2, lat2, projection, squaredTolera
  * @param {number} lon Longitude.
  * @param {number} lat1 Latitude 1.
  * @param {number} lat2 Latitude 2.
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  * @param {number} squaredTolerance Squared tolerance.
  * @return {Array.<number>} Flat coordinates.
  */
@@ -151,7 +151,7 @@ export function meridian(lon, lat1, lat2, projection, squaredTolerance) {
  * @param {number} lat Latitude.
  * @param {number} lon1 Longitude 1.
  * @param {number} lon2 Longitude 2.
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  * @param {number} squaredTolerance Squared tolerance.
  * @return {Array.<number>} Flat coordinates.
  */
diff --git a/src/ol/interaction/DragAndDrop.js b/src/ol/interaction/DragAndDrop.js
index 4160e2d633..f8ce08c2d8 100644
--- a/src/ol/interaction/DragAndDrop.js
+++ b/src/ol/interaction/DragAndDrop.js
@@ -36,7 +36,7 @@ const DragAndDropEventType = {
  * @param {ol.interaction.DragAndDropEventType} type Type.
  * @param {File} file File.
  * @param {Array.<ol.Feature>=} opt_features Features.
- * @param {ol.proj.Projection=} opt_projection Projection.
+ * @param {module:ol/proj/Projection~Projection=} opt_projection Projection.
  */
 const DragAndDropEvent = function(type, file, opt_features, opt_projection) {
 
@@ -58,7 +58,7 @@ const DragAndDropEvent = function(type, file, opt_features, opt_projection) {
 
   /**
    * The feature projection.
-   * @type {ol.proj.Projection|undefined}
+   * @type {module:ol/proj/Projection~Projection|undefined}
    * @api
    */
   this.projection = opt_projection;
@@ -94,7 +94,7 @@ const DragAndDrop = function(opt_options) {
 
   /**
    * @private
-   * @type {ol.proj.Projection}
+   * @type {module:ol/proj/Projection~Projection}
    */
   this.projection_ = options.projection ?
     getProjection(options.projection) : null;
diff --git a/src/ol/proj/Projection.js b/src/ol/proj/Projection.js
index 5829dbb780..0bc8d41822 100644
--- a/src/ol/proj/Projection.js
+++ b/src/ol/proj/Projection.js
@@ -7,7 +7,7 @@ import {METERS_PER_UNIT} from '../proj/Units.js';
 /**
  * @typedef {Object} Options
  * @property {string} code The SRS identifier code, e.g. `EPSG:4326`.
- * @property {ol.proj.Units|string|undefined} units Units. Required unless a
+ * @property {module:ol/proj/Units~Units|string|undefined} units Units. Required unless a
  * proj4 projection is defined for `code`.
  * @property {ol.Extent|undefined} extent The validity extent for the SRS.
  * @property {string|undefined} axisOrientation The axis orientation as specified
@@ -15,7 +15,7 @@ import {METERS_PER_UNIT} from '../proj/Units.js';
  * @property {boolean|undefined} global Whether the projection is valid for the
  * whole globe. Default is `false`.
  * @property {number|undefined} metersPerUnit The meters per unit for the SRS.
- * If not provided, the `units` are used to get the meters per unit from the {@link ol.proj.METERS_PER_UNIT}
+ * If not provided, the `units` are used to get the meters per unit from the {@link module:ol/proj/Units~METERS_PER_UNIT}
  * lookup table.
  * @property {ol.Extent|undefined} worldExtent The world extent for the SRS.
  * @property {(function(number, ol.Coordinate):number|undefined)} getPointResolution
@@ -34,7 +34,7 @@ import {METERS_PER_UNIT} from '../proj/Units.js';
  * and options use {@link module:ol/proj~ProjectionLike} which means the simple string
  * code will suffice.
  *
- * You can use {@link ol.proj.get} to retrieve the object for a particular
+ * You can use {@link module:ol/proj~get} to retrieve the object for a particular
  * projection.
  *
  * The library includes definitions for `EPSG:4326` and `EPSG:3857`, together
@@ -49,7 +49,7 @@ import {METERS_PER_UNIT} from '../proj/Units.js';
  *
  * If you use proj4js, aliases can be added using `proj4.defs()`; see
  * [documentation](https://github.com/proj4js/proj4js). To set an alternative
- * namespace for proj4, use {@link ol.proj.setProj4}.
+ * namespace for proj4, use {@link module:ol/proj~setProj4}.
  *
  * @constructor
  * @param {module:ol/proj/Projection~Options} options Projection options.
@@ -64,17 +64,17 @@ const Projection = function(options) {
   this.code_ = options.code;
 
   /**
-   * Units of projected coordinates. When set to `ol.proj.Units.TILE_PIXELS`, a
+   * Units of projected coordinates. When set to `TILE_PIXELS`, a
    * `this.extent_` and `this.worldExtent_` must be configured properly for each
    * tile.
    * @private
-   * @type {ol.proj.Units}
+   * @type {module:ol/proj/Units~Units}
    */
-  this.units_ = /** @type {ol.proj.Units} */ (options.units);
+  this.units_ = /** @type {module:ol/proj/Units~Units} */ (options.units);
 
   /**
    * Validity extent of the projection in projected coordinates. For projections
-   * with `ol.proj.Units.TILE_PIXELS` units, this is the extent of the tile in
+   * with `TILE_PIXELS` units, this is the extent of the tile in
    * tile pixel space.
    * @private
    * @type {module:ol/extent~Extent}
@@ -83,7 +83,7 @@ const Projection = function(options) {
 
   /**
    * Extent of the world in EPSG:4326. For projections with
-   * `ol.proj.Units.TILE_PIXELS` units, this is the extent of the tile in
+   * `TILE_PIXELS` units, this is the extent of the tile in
    * projected coordinate space.
    * @private
    * @type {module:ol/extent~Extent}
@@ -160,7 +160,7 @@ Projection.prototype.getExtent = function() {
 
 /**
  * Get the units of this projection.
- * @return {ol.proj.Units} Units.
+ * @return {module:ol/proj/Units~Units} Units.
  * @api
  */
 Projection.prototype.getUnits = function() {
diff --git a/src/ol/proj/Units.js b/src/ol/proj/Units.js
index 25b8041517..5a88c1b577 100644
--- a/src/ol/proj/Units.js
+++ b/src/ol/proj/Units.js
@@ -20,7 +20,7 @@ const Units = {
 /**
  * Meters per unit lookup table.
  * @const
- * @type {Object.<ol.proj.Units, number>}
+ * @type {Object.<module:ol/proj/Units~Units, number>}
  * @api
  */
 export const METERS_PER_UNIT = {};
diff --git a/src/ol/proj/epsg3857.js b/src/ol/proj/epsg3857.js
index 8c77b0a4c9..bae62a45fc 100644
--- a/src/ol/proj/epsg3857.js
+++ b/src/ol/proj/epsg3857.js
@@ -45,7 +45,7 @@ export const WORLD_EXTENT = [-180, -85, 180, 85];
  * Projection object for web/spherical Mercator (EPSG:3857).
  *
  * @constructor
- * @extends {ol.proj.Projection}
+ * @extends {module:ol/proj/Projection~Projection}
  * @param {string} code Code.
  */
 function EPSG3857Projection(code) {
@@ -67,7 +67,7 @@ inherits(EPSG3857Projection, Projection);
  * Projections equal to EPSG:3857.
  *
  * @const
- * @type {Array.<ol.proj.Projection>}
+ * @type {Array.<module:ol/proj/Projection~Projection>}
  */
 export const PROJECTIONS = [
   new EPSG3857Projection('EPSG:3857'),
diff --git a/src/ol/proj/epsg4326.js b/src/ol/proj/epsg4326.js
index dc0b7c3d9a..a5d0b17a38 100644
--- a/src/ol/proj/epsg4326.js
+++ b/src/ol/proj/epsg4326.js
@@ -40,7 +40,7 @@ export const METERS_PER_UNIT = Math.PI * RADIUS / 180;
  * OpenLayers treats EPSG:4326 as a pseudo-projection, with x,y coordinates.
  *
  * @constructor
- * @extends {ol.proj.Projection}
+ * @extends {module:ol/proj/Projection~Projection}
  * @param {string} code Code.
  * @param {string=} opt_axisOrientation Axis orientation.
  */
@@ -62,7 +62,7 @@ inherits(EPSG4326Projection, Projection);
  * Projections equal to EPSG:4326.
  *
  * @const
- * @type {Array.<ol.proj.Projection>}
+ * @type {Array.<module:ol/proj/Projection~Projection>}
  */
 export const PROJECTIONS = [
   new EPSG4326Projection('CRS:84'),
diff --git a/src/ol/proj/projections.js b/src/ol/proj/projections.js
index 496b335a29..7e5e6fe7a0 100644
--- a/src/ol/proj/projections.js
+++ b/src/ol/proj/projections.js
@@ -4,7 +4,7 @@
 
 
 /**
- * @type {Object.<string, ol.proj.Projection>}
+ * @type {Object.<string, module:ol/proj/Projection~Projection>}
  */
 let cache = {};
 
@@ -20,7 +20,7 @@ export function clear() {
 /**
  * Get a cached projection by code.
  * @param {string} code The code for the projection.
- * @return {ol.proj.Projection} The projection (if cached).
+ * @return {module:ol/proj/Projection~Projection} The projection (if cached).
  */
 export function get(code) {
   return cache[code] || null;
@@ -30,7 +30,7 @@ export function get(code) {
 /**
  * Add a projection to the cache.
  * @param {string} code The projection code.
- * @param {ol.proj.Projection} projection The projection to cache.
+ * @param {module:ol/proj/Projection~Projection} projection The projection to cache.
  */
 export function add(code, projection) {
   cache[code] = projection;
diff --git a/src/ol/proj/transforms.js b/src/ol/proj/transforms.js
index c73cd8fd1a..ae7dc98a00 100644
--- a/src/ol/proj/transforms.js
+++ b/src/ol/proj/transforms.js
@@ -23,8 +23,8 @@ export function clear() {
  * Registers a conversion function to convert coordinates from the source
  * projection to the destination projection.
  *
- * @param {ol.proj.Projection} source Source.
- * @param {ol.proj.Projection} destination Destination.
+ * @param {module:ol/proj/Projection~Projection} source Source.
+ * @param {module:ol/proj/Projection~Projection} destination Destination.
  * @param {module:ol/proj~TransformFunction} transformFn Transform.
  */
 export function add(source, destination, transformFn) {
@@ -42,8 +42,8 @@ export function add(source, destination, transformFn) {
  * projection to the destination projection.  This method is used to clean up
  * cached transforms during testing.
  *
- * @param {ol.proj.Projection} source Source projection.
- * @param {ol.proj.Projection} destination Destination projection.
+ * @param {module:ol/proj/Projection~Projection} source Source projection.
+ * @param {module:ol/proj/Projection~Projection} destination Destination projection.
  * @return {module:ol/proj~TransformFunction} transformFn The unregistered transform.
  */
 export function remove(source, destination) {
diff --git a/src/ol/renderer/Layer.js b/src/ol/renderer/Layer.js
index de168794c7..4707e81df4 100644
--- a/src/ol/renderer/Layer.js
+++ b/src/ol/renderer/Layer.js
@@ -56,7 +56,7 @@ LayerRenderer.prototype.hasFeatureAtCoordinate = FALSE;
 /**
  * Create a function that adds loaded tiles to the tile lookup.
  * @param {ol.source.Tile} source Tile source.
- * @param {ol.proj.Projection} projection Projection of the tiles.
+ * @param {module:ol/proj/Projection~Projection} projection Projection of the tiles.
  * @param {Object.<number, Object.<string, ol.Tile>>} tiles Lookup of loaded
  *     tiles by zoom level.
  * @return {function(number, ol.TileRange):boolean} A function that can be
@@ -198,7 +198,7 @@ LayerRenderer.prototype.updateUsedTiles = function(usedTiles, tileSource, z, til
  * @param {ol.source.Tile} tileSource Tile source.
  * @param {ol.tilegrid.TileGrid} tileGrid Tile grid.
  * @param {number} pixelRatio Pixel ratio.
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  * @param {module:ol/extent~Extent} extent Extent.
  * @param {number} currentZ Current Z.
  * @param {number} preload Load low resolution tiles up to 'preload' levels.
diff --git a/src/ol/reproj/Image.js b/src/ol/reproj/Image.js
index 311cb59a7f..cc8b62819c 100644
--- a/src/ol/reproj/Image.js
+++ b/src/ol/reproj/Image.js
@@ -18,8 +18,8 @@ import Triangulation from '../reproj/Triangulation.js';
  *
  * @constructor
  * @extends {ol.ImageBase}
- * @param {ol.proj.Projection} sourceProj Source projection (of the data).
- * @param {ol.proj.Projection} targetProj Target projection.
+ * @param {module:ol/proj/Projection~Projection} sourceProj Source projection (of the data).
+ * @param {module:ol/proj/Projection~Projection} targetProj Target projection.
  * @param {module:ol/extent~Extent} targetExtent Target extent.
  * @param {number} targetResolution Target resolution.
  * @param {number} pixelRatio Pixel ratio.
@@ -31,7 +31,7 @@ const ReprojImage = function(sourceProj, targetProj,
 
   /**
    * @private
-   * @type {ol.proj.Projection}
+   * @type {module:ol/proj/Projection~Projection}
    */
   this.targetProj_ = targetProj;
 
@@ -132,7 +132,7 @@ ReprojImage.prototype.getImage = function() {
 
 
 /**
- * @return {ol.proj.Projection} Projection.
+ * @return {module:ol/proj/Projection~Projection} Projection.
  */
 ReprojImage.prototype.getProjection = function() {
   return this.targetProj_;
diff --git a/src/ol/reproj/Tile.js b/src/ol/reproj/Tile.js
index e54fb0c5ea..41ead2111b 100644
--- a/src/ol/reproj/Tile.js
+++ b/src/ol/reproj/Tile.js
@@ -19,9 +19,9 @@ import Triangulation from '../reproj/Triangulation.js';
  *
  * @constructor
  * @extends {ol.Tile}
- * @param {ol.proj.Projection} sourceProj Source projection.
+ * @param {module:ol/proj/Projection~Projection} sourceProj Source projection.
  * @param {ol.tilegrid.TileGrid} sourceTileGrid Source tile grid.
- * @param {ol.proj.Projection} targetProj Target projection.
+ * @param {module:ol/proj/Projection~Projection} targetProj Target projection.
  * @param {ol.tilegrid.TileGrid} targetTileGrid Target tile grid.
  * @param {module:ol/tilecoord~TileCoord} tileCoord Coordinate of the tile.
  * @param {module:ol/tilecoord~TileCoord} wrappedTileCoord Coordinate of the tile wrapped in X.
diff --git a/src/ol/reproj/Triangulation.js b/src/ol/reproj/Triangulation.js
index a9c7c2a114..3e41359e13 100644
--- a/src/ol/reproj/Triangulation.js
+++ b/src/ol/reproj/Triangulation.js
@@ -33,8 +33,8 @@ const MAX_TRIANGLE_WIDTH = 0.25;
  * Class containing triangulation of the given target extent.
  * Used for determining source data and the reprojection itself.
  *
- * @param {ol.proj.Projection} sourceProj Source projection.
- * @param {ol.proj.Projection} targetProj Target projection.
+ * @param {module:ol/proj/Projection~Projection} sourceProj Source projection.
+ * @param {module:ol/proj/Projection~Projection} targetProj Target projection.
  * @param {module:ol/extent~Extent} targetExtent Target extent to triangulate.
  * @param {module:ol/extent~Extent} maxSourceExtent Maximal source extent that can be used.
  * @param {number} errorThreshold Acceptable error (in source units).
@@ -44,13 +44,13 @@ const Triangulation = function(sourceProj, targetProj, targetExtent,
   maxSourceExtent, errorThreshold) {
 
   /**
-   * @type {ol.proj.Projection}
+   * @type {module:ol/proj/Projection~Projection}
    * @private
    */
   this.sourceProj_ = sourceProj;
 
   /**
-   * @type {ol.proj.Projection}
+   * @type {module:ol/proj/Projection~Projection}
    * @private
    */
   this.targetProj_ = targetProj;
diff --git a/src/ol/source/BingMaps.js b/src/ol/source/BingMaps.js
index e062301ca4..baff2adf0c 100644
--- a/src/ol/source/BingMaps.js
+++ b/src/ol/source/BingMaps.js
@@ -151,7 +151,7 @@ BingMaps.prototype.handleImageryMetadataResponse = function(response) {
       /**
            * @param {module:ol/tilecoord~TileCoord} tileCoord Tile coordinate.
            * @param {number} pixelRatio Pixel ratio.
-           * @param {ol.proj.Projection} projection Projection.
+           * @param {module:ol/proj/Projection~Projection} projection Projection.
            * @return {string|undefined} Tile URL.
            */
         function(tileCoord, pixelRatio, projection) {
diff --git a/src/ol/source/Image.js b/src/ol/source/Image.js
index bfe21ea3b1..4dd3e3da6c 100644
--- a/src/ol/source/Image.js
+++ b/src/ol/source/Image.js
@@ -139,7 +139,7 @@ ImageSource.prototype.findNearestResolution = function(resolution) {
  * @param {module:ol/extent~Extent} extent Extent.
  * @param {number} resolution Resolution.
  * @param {number} pixelRatio Pixel ratio.
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  * @return {ol.ImageBase} Single image.
  */
 ImageSource.prototype.getImage = function(extent, resolution, pixelRatio, projection) {
@@ -183,7 +183,7 @@ ImageSource.prototype.getImage = function(extent, resolution, pixelRatio, projec
  * @param {module:ol/extent~Extent} extent Extent.
  * @param {number} resolution Resolution.
  * @param {number} pixelRatio Pixel ratio.
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  * @return {ol.ImageBase} Single image.
  * @protected
  */
diff --git a/src/ol/source/ImageArcGISRest.js b/src/ol/source/ImageArcGISRest.js
index e25b39b183..3b4b968ab7 100644
--- a/src/ol/source/ImageArcGISRest.js
+++ b/src/ol/source/ImageArcGISRest.js
@@ -195,7 +195,7 @@ ImageArcGISRest.prototype.getImageLoadFunction = function() {
  * @param {module:ol/extent~Extent} extent Extent.
  * @param {module:ol/size~Size} size Size.
  * @param {number} pixelRatio Pixel ratio.
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  * @param {Object} params Params.
  * @return {string} Request URL.
  * @private
diff --git a/src/ol/source/ImageMapGuide.js b/src/ol/source/ImageMapGuide.js
index cb3c490683..5d4cc0c010 100644
--- a/src/ol/source/ImageMapGuide.js
+++ b/src/ol/source/ImageMapGuide.js
@@ -203,7 +203,7 @@ ImageMapGuide.prototype.updateParams = function(params) {
  * @param {Object.<string, string|number>} params Request parameters.
  * @param {module:ol/extent~Extent} extent Extent.
  * @param {module:ol/size~Size} size Size.
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  * @return {string} The mapagent map image request URL.
  */
 ImageMapGuide.prototype.getUrl = function(baseUrl, params, extent, size, projection) {
diff --git a/src/ol/source/ImageWMS.js b/src/ol/source/ImageWMS.js
index 47723e4058..2f783fb951 100644
--- a/src/ol/source/ImageWMS.js
+++ b/src/ol/source/ImageWMS.js
@@ -257,7 +257,7 @@ ImageWMS.prototype.getImageLoadFunction = function() {
  * @param {module:ol/extent~Extent} extent Extent.
  * @param {module:ol/size~Size} size Size.
  * @param {number} pixelRatio Pixel ratio.
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  * @param {Object} params Params.
  * @return {string} Request URL.
  * @private
diff --git a/src/ol/source/Raster.js b/src/ol/source/Raster.js
index b25045c5a2..4b61584cb2 100644
--- a/src/ol/source/Raster.js
+++ b/src/ol/source/Raster.js
@@ -224,7 +224,7 @@ RasterSource.prototype.setOperation = function(operation, opt_lib) {
  * Update the stored frame state.
  * @param {module:ol/extent~Extent} extent The view extent (in map units).
  * @param {number} resolution The view resolution.
- * @param {ol.proj.Projection} projection The view projection.
+ * @param {module:ol/proj/Projection~Projection} projection The view projection.
  * @return {olx.FrameState} The updated frame state.
  * @private
  */
diff --git a/src/ol/source/Source.js b/src/ol/source/Source.js
index 3f0dda1712..a34d72f2e8 100644
--- a/src/ol/source/Source.js
+++ b/src/ol/source/Source.js
@@ -28,7 +28,7 @@ const Source = function(options) {
 
   /**
    * @private
-   * @type {ol.proj.Projection}
+   * @type {module:ol/proj/Projection~Projection}
    */
   this.projection_ = getProjection(options.projection);
 
@@ -104,7 +104,7 @@ Source.prototype.getAttributions = function() {
 
 /**
  * Get the projection of the source.
- * @return {ol.proj.Projection} Projection.
+ * @return {module:ol/proj/Projection~Projection} Projection.
  * @api
  */
 Source.prototype.getProjection = function() {
diff --git a/src/ol/source/Tile.js b/src/ol/source/Tile.js
index 74f8fe9d3a..2e17408890 100644
--- a/src/ol/source/Tile.js
+++ b/src/ol/source/Tile.js
@@ -91,7 +91,7 @@ TileSource.prototype.canExpireCache = function() {
 
 
 /**
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  * @param {Object.<string, ol.TileRange>} usedTiles Used tiles.
  */
 TileSource.prototype.expireCache = function(projection, usedTiles) {
@@ -103,7 +103,7 @@ TileSource.prototype.expireCache = function(projection, usedTiles) {
 
 
 /**
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  * @param {number} z Zoom level.
  * @param {ol.TileRange} tileRange Tile range.
  * @param {function(ol.Tile):(boolean|undefined)} callback Called with each
@@ -140,7 +140,7 @@ TileSource.prototype.forEachLoadedTile = function(projection, z, tileRange, call
 
 
 /**
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  * @return {number} Gutter.
  */
 TileSource.prototype.getGutter = function(projection) {
@@ -172,7 +172,7 @@ TileSource.prototype.setKey = function(key) {
 
 
 /**
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  * @return {boolean} Opaque.
  */
 TileSource.prototype.getOpaque = function(projection) {
@@ -194,7 +194,7 @@ TileSource.prototype.getResolutions = function() {
  * @param {number} x Tile coordinate x.
  * @param {number} y Tile coordinate y.
  * @param {number} pixelRatio Pixel ratio.
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  * @return {!ol.Tile} Tile.
  */
 TileSource.prototype.getTile = function(z, x, y, pixelRatio, projection) {};
@@ -211,7 +211,7 @@ TileSource.prototype.getTileGrid = function() {
 
 
 /**
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  * @return {!ol.tilegrid.TileGrid} Tile grid.
  */
 TileSource.prototype.getTileGridForProjection = function(projection) {
@@ -224,7 +224,7 @@ TileSource.prototype.getTileGridForProjection = function(projection) {
 
 
 /**
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  * @return {ol.TileCache} Tile cache.
  * @protected
  */
@@ -253,7 +253,7 @@ TileSource.prototype.getTilePixelRatio = function(pixelRatio) {
 /**
  * @param {number} z Z.
  * @param {number} pixelRatio Pixel ratio.
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  * @return {module:ol/size~Size} Tile size.
  */
 TileSource.prototype.getTilePixelSize = function(z, pixelRatio, projection) {
@@ -273,7 +273,7 @@ TileSource.prototype.getTilePixelSize = function(z, pixelRatio, projection) {
  * is outside the resolution and extent range of the tile grid, `null` will be
  * returned.
  * @param {module:ol/tilecoord~TileCoord} tileCoord Tile coordinate.
- * @param {ol.proj.Projection=} opt_projection Projection.
+ * @param {module:ol/proj/Projection~Projection=} opt_projection Projection.
  * @return {module:ol/tilecoord~TileCoord} Tile coordinate to be passed to the tileUrlFunction or
  *     null if no tile URL should be created for the passed `tileCoord`.
  */
@@ -302,7 +302,7 @@ TileSource.prototype.refresh = function() {
  * @param {number} z Tile coordinate z.
  * @param {number} x Tile coordinate x.
  * @param {number} y Tile coordinate y.
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  */
 TileSource.prototype.useTile = UNDEFINED;
 
diff --git a/src/ol/source/TileArcGISRest.js b/src/ol/source/TileArcGISRest.js
index 29c5124d7b..7f0eb68c3f 100644
--- a/src/ol/source/TileArcGISRest.js
+++ b/src/ol/source/TileArcGISRest.js
@@ -90,7 +90,7 @@ TileArcGISRest.prototype.getParams = function() {
  * @param {module:ol/size~Size} tileSize Tile size.
  * @param {module:ol/extent~Extent} tileExtent Tile extent.
  * @param {number} pixelRatio Pixel ratio.
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  * @param {Object} params Params.
  * @return {string|undefined} Request URL.
  * @private
diff --git a/src/ol/source/TileImage.js b/src/ol/source/TileImage.js
index 5329ff7c92..ca49e7dee3 100644
--- a/src/ol/source/TileImage.js
+++ b/src/ol/source/TileImage.js
@@ -204,7 +204,7 @@ TileImage.prototype.getTileCacheForProjection = function(projection) {
  * @param {number} x Tile coordinate x.
  * @param {number} y Tile coordinate y.
  * @param {number} pixelRatio Pixel ratio.
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  * @param {string} key The key set on the tile.
  * @return {!ol.Tile} Tile.
  * @private
@@ -233,7 +233,7 @@ TileImage.prototype.createTile_ = function(z, x, y, pixelRatio, projection, key)
  * @inheritDoc
  */
 TileImage.prototype.getTile = function(z, x, y, pixelRatio, projection) {
-  const sourceProjection = /** @type {!ol.proj.Projection} */ (this.getProjection());
+  const sourceProjection = /** @type {!module:ol/proj/Projection~Projection} */ (this.getProjection());
   if (!ENABLE_RASTER_REPROJECTION ||
       !sourceProjection || !projection || equivalent(sourceProjection, projection)) {
     return this.getTileInternal(z, x, y, pixelRatio, sourceProjection || projection);
@@ -282,7 +282,7 @@ TileImage.prototype.getTile = function(z, x, y, pixelRatio, projection) {
  * @param {number} x Tile coordinate x.
  * @param {number} y Tile coordinate y.
  * @param {number} pixelRatio Pixel ratio.
- * @param {!ol.proj.Projection} projection Projection.
+ * @param {!module:ol/proj/Projection~Projection} projection Projection.
  * @return {!ol.Tile} Tile.
  * @protected
  */
diff --git a/src/ol/source/TileWMS.js b/src/ol/source/TileWMS.js
index 342d52af3d..c207d78605 100644
--- a/src/ol/source/TileWMS.js
+++ b/src/ol/source/TileWMS.js
@@ -185,7 +185,7 @@ TileWMS.prototype.getParams = function() {
  * @param {module:ol/size~Size} tileSize Tile size.
  * @param {module:ol/extent~Extent} tileExtent Tile extent.
  * @param {number} pixelRatio Pixel ratio.
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  * @param {Object} params Params.
  * @return {string|undefined} Request URL.
  * @private
diff --git a/src/ol/source/Vector.js b/src/ol/source/Vector.js
index 1ce27269d3..ad9ee8ce37 100644
--- a/src/ol/source/Vector.js
+++ b/src/ol/source/Vector.js
@@ -752,7 +752,7 @@ VectorSource.prototype.isEmpty = function() {
 /**
  * @param {module:ol/extent~Extent} extent Extent.
  * @param {number} resolution Resolution.
- * @param {ol.proj.Projection} projection Projection.
+ * @param {module:ol/proj/Projection~Projection} projection Projection.
  */
 VectorSource.prototype.loadFeatures = function(extent, resolution, projection) {
   const loadedExtentsRtree = this.loadedExtentsRtree_;
diff --git a/src/ol/source/WMTS.js b/src/ol/source/WMTS.js
index 937038cd00..162b860e02 100644
--- a/src/ol/source/WMTS.js
+++ b/src/ol/source/WMTS.js
@@ -123,7 +123,7 @@ const WMTS = function(options) {
       /**
        * @param {module:ol/tilecoord~TileCoord} tileCoord Tile coordinate.
        * @param {number} pixelRatio Pixel ratio.
-       * @param {ol.proj.Projection} projection Projection.
+       * @param {module:ol/proj/Projection~Projection} projection Projection.
        * @return {string|undefined} Tile URL.
        */
       function(tileCoord, pixelRatio, projection) {
diff --git a/src/ol/source/Zoomify.js b/src/ol/source/Zoomify.js
index 0b50cf352c..a3663deade 100644
--- a/src/ol/source/Zoomify.js
+++ b/src/ol/source/Zoomify.js
@@ -169,7 +169,7 @@ const Zoomify = function(opt_options) {
       /**
        * @param {module:ol/tilecoord~TileCoord} tileCoord Tile Coordinate.
        * @param {number} pixelRatio Pixel ratio.
-       * @param {ol.proj.Projection} projection Projection.
+       * @param {module:ol/proj/Projection~Projection} projection Projection.
        * @return {string|undefined} Tile URL.
        */
       function(tileCoord, pixelRatio, projection) {
diff --git a/src/ol/typedefs.js b/src/ol/typedefs.js
index ccf4eed2fb..725e35c9df 100644
--- a/src/ol/typedefs.js
+++ b/src/ol/typedefs.js
@@ -80,12 +80,12 @@ ol.CanvasFillState;
  * used by the source as an image. The arguments passed to the function are:
  * {@link module:ol/extent~Extent} the image extent, `{number}` the image resolution,
  * `{number}` the device pixel ratio, {@link module:ol/size~Size} the image size, and
- * {@link ol.proj.Projection} the image projection. The canvas returned by
+ * {@link module:ol/proj/Projection~Projection} the image projection. The canvas returned by
  * this function is cached by the source. The this keyword inside the function
  * references the {@link ol.source.ImageCanvas}.
  *
  * @typedef {function(this:ol.source.ImageCanvas, module:ol/extent~Extent, number,
- *     number, module:ol/size~Size, ol.proj.Projection): HTMLCanvasElement}
+ *     number, module:ol/size~Size, module:ol/proj/Projection~Projection): HTMLCanvasElement}
  */
 ol.CanvasFunctionType;