diff --git a/src/ol/View.js b/src/ol/View.js
index 2a168cf7fb..d470b80c5d 100644
--- a/src/ol/View.js
+++ b/src/ol/View.js
@@ -146,8 +146,8 @@ import Units from './proj/Units.js';
  * the animation.
  * @property {ol.Coordinate|undefined} anchor Optional anchor to remained fixed
  * during a rotation or resolution animation.
- * @property {number|undefined} [duration=1000] The duration of the animation in milliseconds.
- * @property {undefined|function(number):number} [easing] The easing function used
+ * @property {number} [duration=1000] The duration of the animation in milliseconds.
+ * @property {function(number):number} [easing] The easing function used
  * during the animation (defaults to {@link ol.easing.inAndOut}).
  * The function will be called for each frame with a number representing a
  * fraction of the animation's duration.  The function should return a number
diff --git a/src/ol/control/Rotate.js b/src/ol/control/Rotate.js
index 76a725c7e5..0ff894b973 100644
--- a/src/ol/control/Rotate.js
+++ b/src/ol/control/Rotate.js
@@ -12,17 +12,17 @@ import {inherits} from '../index.js';
 
 /**
  * @typedef {Object} Options
- * @property {string|undefined} [className='ol-rotate'] CSS class name.
- * @property {string|Element|undefined} [label='⇧'] Text label to use for the rotate button.
+ * @property {string} [className='ol-rotate'] CSS class name.
+ * @property {string|Element} [label='⇧'] Text label to use for the rotate button.
  * Instead of text, also an element (e.g. a `span` element) can be used.
- * @property {string|undefined} [tipLabel='Reset rotation'] Text label to use for the rotate tip.
- * @property {number|undefined} [duration=250] Animation duration in milliseconds.
- * @property {boolean|undefined} [autoHide=true] Hide the control when rotation is 0.
+ * @property {string} [tipLabel='Reset rotation'] Text label to use for the rotate tip.
+ * @property {number} [duration=250] Animation duration in milliseconds.
+ * @property {boolean} [autoHide=true] Hide the control when rotation is 0.
  * @property {function(ol.MapEvent)|undefined} render Function called when the control should
  * be re-rendered. This is called in a `requestAnimationFrame` callback.
- * @property {function()|undefined} [resetNorth] Function called when the control is clicked.
+ * @property {function()} [resetNorth] Function called when the control is clicked.
  * This will override the default `resetNorth`.
- * @property {Element|string|undefined} [target] Specify a target if you want the control to be
+ * @property {Element|string} [target] Specify a target if you want the control to be
  * rendered outside of the map's viewport.
  */
 
diff --git a/src/ol/control/Zoom.js b/src/ol/control/Zoom.js
index 6d27698ab9..2f5dac07fe 100644
--- a/src/ol/control/Zoom.js
+++ b/src/ol/control/Zoom.js
@@ -11,16 +11,16 @@ import {easeOut} from '../easing.js';
 
 /**
  * @typedef {Object} Options
- * @property {number|undefined} [duration=250] Animation duration in milliseconds.
- * @property {string|undefined} [className='ol-zoom'] CSS class name.
- * @property {string|Element|undefined} [zoomInLabel='+'] Text label to use for the zoom-in
+ * @property {number} [duration=250] Animation duration in milliseconds.
+ * @property {string} [className='ol-zoom'] CSS class name.
+ * @property {string|Element} [zoomInLabel='+'] Text label to use for the zoom-in
  * button. Instead of text, also an element (e.g. a `span` element) can be used.
- * @property {string|Element|undefined} [zoomOutLabel='-'] Text label to use for the zoom-out button.
+ * @property {string|Element} [zoomOutLabel='-'] Text label to use for the zoom-out button.
  * Instead of text, also an element (e.g. a `span` element) can be used.
- * @property {string|undefined} [zoomInTipLabel='Zoom in'] Text label to use for the button tip.
- * @property {string|undefined} [zoomOutTipLabel='Zoom out'] Text label to use for the button tip.
- * @property {number|undefined} [delta=1] The zoom delta applied on each click.
- * @property {Element|string|undefined} [target] Specify a target if you want the control to be
+ * @property {string} [zoomInTipLabel='Zoom in'] Text label to use for the button tip.
+ * @property {string} [zoomOutTipLabel='Zoom out'] Text label to use for the button tip.
+ * @property {number} [delta=1] The zoom delta applied on each click.
+ * @property {Element|string} [target] Specify a target if you want the control to be
  * rendered outside of the map's viewport.
  */
 
diff --git a/src/ol/control/ZoomSlider.js b/src/ol/control/ZoomSlider.js
index 3360cbd8d8..23a1cdbace 100644
--- a/src/ol/control/ZoomSlider.js
+++ b/src/ol/control/ZoomSlider.js
@@ -27,8 +27,8 @@ const Direction = {
 
 /**
  * @typedef {Object} Options
- * @property {string|undefined} className CSS class name.
- * @property {number|undefined} [duration=200] Animation duration in milliseconds.
+ * @property {string} [className='ol-zoomslider'] CSS class name.
+ * @property {number} [duration=200] Animation duration in milliseconds.
  * @property {number|undefined} maxResolution Maximum resolution.
  * @property {number|undefined} minResolution Minimum resolution.
  * @property {function(ol.MapEvent)|undefined} render Function called when the control