diff --git a/src/ol/Collection.js b/src/ol/Collection.js
index 30f9498d3a..401e19d256 100644
--- a/src/ol/Collection.js
+++ b/src/ol/Collection.js
@@ -59,7 +59,7 @@ export class CollectionEvent extends Event {
  * Collection as a whole.
  *
  * @fires CollectionEvent
- * @extends BaseObject<'add'|'remove'|'change:length'>
+ *
  * @template T
  * @api
  */
diff --git a/src/ol/Feature.js b/src/ol/Feature.js
index 6d7b808516..6e8fdb8b3e 100644
--- a/src/ol/Feature.js
+++ b/src/ol/Feature.js
@@ -58,7 +58,6 @@ import {listen, unlistenByKey} from './events.js';
  *
  * @api
  * @template {import("./geom/Geometry.js").default} Geometry
- * @extends BaseObject<'change:geometry'>
  */
 class Feature extends BaseObject {
   /**
diff --git a/src/ol/Geolocation.js b/src/ol/Geolocation.js
index ceda60f9e8..e472b134c1 100644
--- a/src/ol/Geolocation.js
+++ b/src/ol/Geolocation.js
@@ -82,7 +82,6 @@ class GeolocationError extends BaseEvent {
  *     });
  *
  * @fires module:ol/events/Event~BaseEvent#event:error
- * @extends BaseObject<'change:accuracy'|'change:accuracyGeometry'|'change:altitude'|'change:altitudeAccuracy'|'change:heading'|'change:position'|'change:projection'|'change:speed'|'change:tracking'|'change:trackingOptions'>
  * @api
  */
 class Geolocation extends BaseObject {
diff --git a/src/ol/Object.js b/src/ol/Object.js
index a5ae717b8f..0c14bc400a 100644
--- a/src/ol/Object.js
+++ b/src/ol/Object.js
@@ -78,8 +78,6 @@ export class ObjectEvent extends Event {
  * object.unset('foo').
  *
  * @fires ObjectEvent
- * @template {string} EventTypes
- * @extends Observable<'propertychange'|EventTypes>
  * @api
  */
 class BaseObject extends Observable {
diff --git a/src/ol/Observable.js b/src/ol/Observable.js
index be5a9412c3..5962fd5dc7 100644
--- a/src/ol/Observable.js
+++ b/src/ol/Observable.js
@@ -5,11 +5,6 @@ import EventTarget from './events/Target.js';
 import EventType from './events/EventType.js';
 import {listen, listenOnce, unlistenByKey} from './events.js';
 
-/**
- * @template ChildTypes
- * @typedef {ChildTypes|'change'|'error'|Array<ChildTypes|'change'|'error'>} EventTypes
- */
-
 /**
  * @classdesc
  * Abstract base class; normally only used for creating subclasses and not
@@ -19,7 +14,6 @@ import {listen, listenOnce, unlistenByKey} from './events.js';
  * {@link module:ol/Observable~Observable#changed}.
  *
  * @fires import("./events/Event.js").default
- * @template {string} ChildTypes
  * @api
  */
 class Observable extends EventTarget {
@@ -54,7 +48,7 @@ class Observable extends EventTarget {
 
   /**
    * Listen for a certain type of event.
-   * @param {EventTypes<ChildTypes>} type The event type or array of event types.
+   * @param {string|Array<string>} type The event type or array of event types.
    * @param {function(?): ?} listener The listener function.
    * @return {import("./events.js").EventsKey|Array<import("./events.js").EventsKey>} Unique key for the listener. If
    *     called with an array of event types as the first argument, the return
@@ -76,7 +70,7 @@ class Observable extends EventTarget {
 
   /**
    * Listen once for a certain type of event.
-   * @param {EventTypes<ChildTypes>} type The event type or array of event types.
+   * @param {string|Array<string>} type The event type or array of event types.
    * @param {function(?): ?} listener The listener function.
    * @return {import("./events.js").EventsKey|Array<import("./events.js").EventsKey>} Unique key for the listener. If
    *     called with an array of event types as the first argument, the return
@@ -100,7 +94,7 @@ class Observable extends EventTarget {
 
   /**
    * Unlisten for a certain type of event.
-   * @param {EventTypes<ChildTypes>} type The event type or array of event types.
+   * @param {string|Array<string>} type The event type or array of event types.
    * @param {function(?): ?} listener The listener function.
    * @api
    */
diff --git a/src/ol/Overlay.js b/src/ol/Overlay.js
index e4a2ace6b5..f08cf2afac 100644
--- a/src/ol/Overlay.js
+++ b/src/ol/Overlay.js
@@ -101,7 +101,6 @@ const Property = {
  *     popup.setPosition(coordinate);
  *     map.addOverlay(popup);
  *
- * @extends BaseObject<'change:element'|'change:map'|'change:offset'|'change:position'|'change:positioning'>
  * @api
  */
 class Overlay extends BaseObject {
diff --git a/src/ol/PluggableMap.js b/src/ol/PluggableMap.js
index bdc431cae9..9c3b94320d 100644
--- a/src/ol/PluggableMap.js
+++ b/src/ol/PluggableMap.js
@@ -132,7 +132,6 @@ import {removeNode} from './dom.js';
  * @fires import("./render/Event.js").default#precompose
  * @fires import("./render/Event.js").default#postcompose
  * @fires import("./render/Event.js").default#rendercomplete
- * @extends BaseObject<'change:layergroup'|'change:size'|'change:target'|'change:view'|'precompose'|'singleclick'|'click'|'dblclick'|'pointerdrag'|'pointermove'|'postrender'|'movestart'|'moveend'|'postcompose'|'rendercomplete'>
  * @api
  */
 class PluggableMap extends BaseObject {
diff --git a/src/ol/View.js b/src/ol/View.js
index 7df9e8d5f4..f6fe8412c6 100644
--- a/src/ol/View.js
+++ b/src/ol/View.js
@@ -288,7 +288,6 @@ const DEFAULT_MIN_ZOOM = 0;
  * the snap angle is 0), an animation will be triggered at the interaction end to
  * put back the view to a stable state;
  *
- * @extends BaseObject<'change:center'|'change:resolution'|'change:rotation'>
  * @api
  */
 class View extends BaseObject {
diff --git a/src/ol/control/Control.js b/src/ol/control/Control.js
index 7295b973b0..81cef9b6d8 100644
--- a/src/ol/control/Control.js
+++ b/src/ol/control/Control.js
@@ -41,8 +41,6 @@ import {removeNode} from '../dom.js';
  * You can also extend this base for your own control class. See
  * examples/custom-controls for an example of how to do this.
  *
- * @template {string} EventTypes
- * @extends BaseObject<EventTypes>
  * @api
  */
 class Control extends BaseObject {
diff --git a/src/ol/control/FullScreen.js b/src/ol/control/FullScreen.js
index 4362066be4..b29a827cf0 100644
--- a/src/ol/control/FullScreen.js
+++ b/src/ol/control/FullScreen.js
@@ -66,7 +66,6 @@ const FullScreenEventType = {
  *
  * @fires FullScreenEventType#enterfullscreen
  * @fires FullScreenEventType#leavefullscreen
- * @extends Control<'enterfullscreen'|'leavefullscreen'>
  * @api
  */
 class FullScreen extends Control {
diff --git a/src/ol/control/MousePosition.js b/src/ol/control/MousePosition.js
index fb6e2bdff9..e6f47b5740 100644
--- a/src/ol/control/MousePosition.js
+++ b/src/ol/control/MousePosition.js
@@ -49,7 +49,6 @@ const COORDINATE_FORMAT = 'coordinateFormat';
  * On touch devices, which usually do not have a mouse cursor, the coordinates
  * of the currently touched position are shown.
  *
- * @extends Control<'change:coordinaetFormat'|'change:projection'>
  * @api
  */
 class MousePosition extends Control {
diff --git a/src/ol/control/ScaleLine.js b/src/ol/control/ScaleLine.js
index e2d9670e91..54b7465783 100644
--- a/src/ol/control/ScaleLine.js
+++ b/src/ol/control/ScaleLine.js
@@ -68,7 +68,6 @@ const DEFAULT_DPI = 25.4 / 0.28;
  * When specifying `bar` as `true`, a scalebar will be rendered instead
  * of a scaleline.
  *
- * @extends Control<'change:units'>
  * @api
  */
 class ScaleLine extends Control {
diff --git a/src/ol/interaction/DragAndDrop.js b/src/ol/interaction/DragAndDrop.js
index 2065418197..44bb6aaac4 100644
--- a/src/ol/interaction/DragAndDrop.js
+++ b/src/ol/interaction/DragAndDrop.js
@@ -82,7 +82,6 @@ export class DragAndDropEvent extends Event {
  * combinnation of formats read both text string and ArrayBuffer sources. Older browsers such
  * as IE which do not support this will need a TextDecoder polyfill to be loaded before use.
  *
- * @extends Interaction<'addfeatures'>
  * @api
  *
  * @fires DragAndDropEvent
diff --git a/src/ol/interaction/DragBox.js b/src/ol/interaction/DragBox.js
index c0bfdc66d3..804777da95 100644
--- a/src/ol/interaction/DragBox.js
+++ b/src/ol/interaction/DragBox.js
@@ -103,7 +103,6 @@ export class DragBoxEvent extends Event {
  * {@link module:ol/interaction/DragRotateAndZoom}).
  *
  * @fires DragBoxEvent
- * @extends PointerInteraction<'boxcancel'|'boxdrag'|'boxend'>
  * @api
  */
 class DragBox extends PointerInteraction {
diff --git a/src/ol/interaction/Draw.js b/src/ol/interaction/Draw.js
index 664911be03..b9f8f720c9 100644
--- a/src/ol/interaction/Draw.js
+++ b/src/ol/interaction/Draw.js
@@ -177,7 +177,6 @@ export class DrawEvent extends Event {
  * Interaction for drawing feature geometries.
  *
  * @fires DrawEvent
- * @extends PointerInteraction<'drawabort'|'drawend'|'drawstart'>
  * @api
  */
 class Draw extends PointerInteraction {
diff --git a/src/ol/interaction/Extent.js b/src/ol/interaction/Extent.js
index 73c2ef47a5..786605c259 100644
--- a/src/ol/interaction/Extent.js
+++ b/src/ol/interaction/Extent.js
@@ -81,7 +81,6 @@ export class ExtentEvent extends Event {
  * This interaction is only supported for mouse devices.
  *
  * @fires ExtentEvent
- * @extends PointerInteraction<'extentchanged'>
  * @api
  */
 class Extent extends PointerInteraction {
diff --git a/src/ol/interaction/Interaction.js b/src/ol/interaction/Interaction.js
index 03cd91fbfa..284b90aed6 100644
--- a/src/ol/interaction/Interaction.js
+++ b/src/ol/interaction/Interaction.js
@@ -27,9 +27,6 @@ import {easeOut, linear} from '../easing.js';
  * by a keyboard event not a button element event.
  * Although interactions do not have a DOM element, some of them do render
  * vectors and so are visible on the screen.
- *
- * @template {string} EventTypes
- * @extends BaseObject<EventTypes|'change:active'>
  * @api
  */
 class Interaction extends BaseObject {
diff --git a/src/ol/interaction/Modify.js b/src/ol/interaction/Modify.js
index bbfbb4f961..a0c99bb21e 100644
--- a/src/ol/interaction/Modify.js
+++ b/src/ol/interaction/Modify.js
@@ -183,7 +183,6 @@ export class ModifyEvent extends Event {
  * key is pressed.  To configure the interaction with a different condition
  * for deletion, use the `deleteCondition` option.
  * @fires ModifyEvent
- * @extends PointerInteraction<'modifyend'|'modifystart'>
  * @api
  */
 class Modify extends PointerInteraction {
diff --git a/src/ol/interaction/Pointer.js b/src/ol/interaction/Pointer.js
index 4c43375afd..a4919e15c1 100644
--- a/src/ol/interaction/Pointer.js
+++ b/src/ol/interaction/Pointer.js
@@ -41,9 +41,6 @@ import {getValues} from '../obj.js';
  * started. During a drag sequence the `handleDragEvent` user function is
  * called on `move` events. The drag sequence ends when the `handleUpEvent`
  * user function is called and returns `false`.
- *
- * @template {string} EventTypes
- * @extends Interaction<EventTypes>
  * @api
  */
 class PointerInteraction extends Interaction {
diff --git a/src/ol/interaction/Select.js b/src/ol/interaction/Select.js
index 4152e1b347..95894e9b32 100644
--- a/src/ol/interaction/Select.js
+++ b/src/ol/interaction/Select.js
@@ -147,7 +147,6 @@ const originalFeatureStyles = {};
  * Selected features are added to an internal unmanaged layer.
  *
  * @fires SelectEvent
- * @extends Interaction<'select'>
  * @api
  */
 class Select extends Interaction {
diff --git a/src/ol/interaction/Translate.js b/src/ol/interaction/Translate.js
index 2e2ef7466e..c0f9353527 100644
--- a/src/ol/interaction/Translate.js
+++ b/src/ol/interaction/Translate.js
@@ -115,7 +115,6 @@ export class TranslateEvent extends Event {
  * Interaction for translating (moving) features.
  *
  * @fires TranslateEvent
- * @extends PointerInteraction<'translateend'|'translatestart'|'translating'>
  * @api
  */
 class Translate extends PointerInteraction {
diff --git a/src/ol/layer/Base.js b/src/ol/layer/Base.js
index 26cf842e98..3d4d903d1d 100644
--- a/src/ol/layer/Base.js
+++ b/src/ol/layer/Base.js
@@ -38,8 +38,6 @@ import {clamp} from '../math.js';
  * the options is set as a {@link module:ol/Object} property on the layer object, so
  * is observable, and has get/set accessors.
  *
- * @template {string} EventTypes
- * @extends BaseObject<EventTypes|'change:extent'|'change:maxResolution'|'change:maxZoom'|'change:minResolution'|'change:minZoom'|'change:opacity'|'change:visible'|'change:zIndex'>
  * @api
  */
 class BaseLayer extends BaseObject {
diff --git a/src/ol/layer/BaseTile.js b/src/ol/layer/BaseTile.js
index ba4344c912..e7f16080a8 100644
--- a/src/ol/layer/BaseTile.js
+++ b/src/ol/layer/BaseTile.js
@@ -45,7 +45,7 @@ import {assign} from '../obj.js';
  * options means that `title` is observable, and has get/set accessors.
  *
  * @template {import("../source/Tile.js").default} TileSourceType
- * @extends Layer<TileSourceType,'preload'|'useInterimTilesOnError'>
+ * @extends {Layer<TileSourceType>}
  * @api
  */
 class BaseTileLayer extends Layer {
diff --git a/src/ol/layer/BaseVector.js b/src/ol/layer/BaseVector.js
index daa60af223..262613d418 100644
--- a/src/ol/layer/BaseVector.js
+++ b/src/ol/layer/BaseVector.js
@@ -73,8 +73,7 @@ const Property = {
  * options means that `title` is observable, and has get/set accessors.
  *
  * @template {import("../source/Vector.js").default|import("../source/VectorTile.js").default} VectorSourceType
- * @template {string} EventTypes
- * @extends Layer<VectorSourceType,EventTypes>
+ * @extends {Layer<VectorSourceType>}
  * @api
  */
 class BaseVectorLayer extends Layer {
diff --git a/src/ol/layer/Layer.js b/src/ol/layer/Layer.js
index 59188d25f4..e4dc254cc3 100644
--- a/src/ol/layer/Layer.js
+++ b/src/ol/layer/Layer.js
@@ -84,8 +84,6 @@ import {listen, unlistenByKey} from '../events.js';
  * @fires import("../render/Event.js").RenderEvent#postrender
  *
  * @template {import("../source/Source.js").default} SourceType
- * @template {string} EventTypes
- * @extends BaseLayer<EventTypes|'postrender'|'prerender'>
  * @api
  */
 class Layer extends BaseLayer {
diff --git a/src/ol/layer/VectorTile.js b/src/ol/layer/VectorTile.js
index e6642777f6..debb7e0767 100644
--- a/src/ol/layer/VectorTile.js
+++ b/src/ol/layer/VectorTile.js
@@ -75,7 +75,7 @@ import {assign} from '../obj.js';
  * options means that `title` is observable, and has get/set accessors.
  *
  * @param {Options} [opt_options] Options.
- * @extends BaseVectorLayer<import("../source/VectorTile.js").default,'change:preload'|'change:useInterimTilesOnError'>
+ * @extends {BaseVectorLayer<import("../source/VectorTile.js").default>}
  * @api
  */
 class VectorTileLayer extends BaseVectorLayer {
diff --git a/src/ol/source/Image.js b/src/ol/source/Image.js
index 1372b3978b..6ab9754ec6 100644
--- a/src/ol/source/Image.js
+++ b/src/ol/source/Image.js
@@ -76,7 +76,6 @@ export class ImageSourceEvent extends Event {
  * Base class for sources providing a single image.
  * @abstract
  * @fires module:ol/source/Image.ImageSourceEvent
- * @extends Source<'imageloadend'|'imageloaderror'|'imageloadstart'>
  * @api
  */
 class ImageSource extends Source {
diff --git a/src/ol/source/Source.js b/src/ol/source/Source.js
index e05c7cc0fc..e2b50a8f6d 100644
--- a/src/ol/source/Source.js
+++ b/src/ol/source/Source.js
@@ -40,8 +40,6 @@ import {get as getProjection} from '../proj.js';
  * Base class for {@link module:ol/layer/Layer~Layer} sources.
  *
  * A generic `change` event is triggered when the state of the source changes.
- * @template {string} EventTypes
- * @extends BaseObject<EventTypes>
  * @abstract
  * @api
  */
diff --git a/src/ol/source/Tile.js b/src/ol/source/Tile.js
index 1b8519cfd3..8f53d88002 100644
--- a/src/ol/source/Tile.js
+++ b/src/ol/source/Tile.js
@@ -36,8 +36,6 @@ import {scale as scaleSize, toSize} from '../size.js';
  * Abstract base class; normally only used for creating subclasses and not
  * instantiated in apps.
  * Base class for sources providing images divided into a tile grid.
- * @template {string} EventTypes
- * @extends Source<EventTypes>
  * @abstract
  * @api
  */
diff --git a/src/ol/source/UrlTile.js b/src/ol/source/UrlTile.js
index 7bb9705c1d..db86b77038 100644
--- a/src/ol/source/UrlTile.js
+++ b/src/ol/source/UrlTile.js
@@ -33,7 +33,6 @@ import {getUid} from '../util.js';
  * Base class for sources providing tiles divided into a tile grid over http.
  *
  * @fires import("./Tile.js").TileSourceEvent
- * @extends TileSource<'tileloadend'|'tileloaderror'|'tileloadstart'>
  */
 class UrlTile extends TileSource {
   /**