diff --git a/externs/olx.js b/externs/olx.js
index 3fb7741c83..03989e6654 100644
--- a/externs/olx.js
+++ b/externs/olx.js
@@ -46,31 +46,6 @@ olx.interaction.TranslateOptions.prototype.layers;
 olx.interaction.TranslateOptions.prototype.hitTolerance;
 
 
-/**
-/**
- * @typedef {{
- *     duration: (number|undefined),
- *     constrainResolution: (boolean|undefined)
- * }}
- */
-olx.interaction.PinchZoomOptions;
-
-
-/**
- * Animation duration in milliseconds. Default is `400`.
- * @type {number|undefined}
- * @api
- */
-olx.interaction.PinchZoomOptions.prototype.duration;
-
-/**
- * Zoom to the closest integer zoom level after the pinch gesture ends. Default is `false`.
- * @type {boolean|undefined}
- * @api
- */
-olx.interaction.PinchZoomOptions.prototype.constrainResolution;
-
-
 /**
  * @typedef {{handleDownEvent: (function(ol.MapBrowserPointerEvent):boolean|undefined),
  *     handleDragEvent: (function(ol.MapBrowserPointerEvent)|undefined),
diff --git a/externs/xol.js b/externs/xol.js
index 112e9ded51..9efaac4e4c 100644
--- a/externs/xol.js
+++ b/externs/xol.js
@@ -14,13 +14,6 @@
  */
 
 
-/**
- * @typedef {Object} interaction_PinchZoomOptions
- * @property {number|undefined} duration Animation duration in milliseconds. Default is `400`.
- * @property {boolean|undefined} constrainResolution Zoom to the closest integer zoom level after the pinch gesture ends. Default is `false`.
- */
-
-
 /**
  * @typedef {Object} interaction_PointerOptions
  * @property {(function(ol.MapBrowserPointerEvent):boolean|undefined)} handleDownEvent Function handling "down" events. If the function returns `true` then a drag
diff --git a/src/ol/interaction/PinchZoom.js b/src/ol/interaction/PinchZoom.js
index d57ffb4d2a..bc0856b183 100644
--- a/src/ol/interaction/PinchZoom.js
+++ b/src/ol/interaction/PinchZoom.js
@@ -7,14 +7,23 @@ import {FALSE} from '../functions.js';
 import {zoom, zoomWithoutConstraints} from '../interaction/Interaction.js';
 import PointerInteraction, {centroid as centroidFromPointers} from '../interaction/Pointer.js';
 
+
+/**
+ * @typedef {Object} Options
+ * @property {number} [duration=400] Animation duration in milliseconds.
+ * @property {boolean} [constrainResolution=false] Zoom to the closest integer
+ * zoom level after the pinch gesture ends.
+ */
+
+
 /**
  * @classdesc
  * Allows the user to zoom the map by pinching with two fingers
  * on a touch screen.
  *
  * @constructor
- * @extends {ol.interaction.Pointer}
- * @param {olx.interaction.PinchZoomOptions=} opt_options Options.
+ * @extends {module:ol/interaction/Pointer~Pointer}
+ * @param {module:ol/interaction/PinchZoom~Options=} opt_options Options.
  * @api
  */
 const PinchZoom = function(opt_options) {
@@ -63,8 +72,8 @@ inherits(PinchZoom, PointerInteraction);
 
 
 /**
- * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
- * @this {ol.interaction.PinchZoom}
+ * @param {module:ol/MapBrowserPointerEvent~MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @this {module:ol/interaction/PinchZoom~PinchZoom}
  */
 function handleDragEvent(mapBrowserEvent) {
   let scaleDelta = 1.0;
@@ -115,9 +124,9 @@ function handleDragEvent(mapBrowserEvent) {
 
 
 /**
- * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @param {module:ol/MapBrowserPointerEvent~MapBrowserPointerEvent} mapBrowserEvent Event.
  * @return {boolean} Stop drag sequence?
- * @this {ol.interaction.PinchZoom}
+ * @this {module:ol/interaction/PinchZoom~PinchZoom}
  */
 function handleUpEvent(mapBrowserEvent) {
   if (this.targetPointers.length < 2) {
@@ -142,9 +151,9 @@ function handleUpEvent(mapBrowserEvent) {
 
 
 /**
- * @param {ol.MapBrowserPointerEvent} mapBrowserEvent Event.
+ * @param {module:ol/MapBrowserPointerEvent/MapBrowserPointerEvent} mapBrowserEvent Event.
  * @return {boolean} Start drag sequence?
- * @this {ol.interaction.PinchZoom}
+ * @this {module:ol/interaction/PinchZoom~PinchZoom}
  */
 function handleDownEvent(mapBrowserEvent) {
   if (this.targetPointers.length >= 2) {