Don't define functions in the prototype

If `VOID` is used, TypeScript is not able to figure out what the function parameters are.

Before:
```
$ npx tsc | wc -l
    1188
```

After:
```
$ npx tsc | wc -l
    1169
```

src/ol/geom/Geometry.js

@@ -3,7 +3,6 @@
  */
 import BaseObject from '../Object.js';
 import {createEmpty, getHeight, returnOrUpdate} from '../extent.js';
-import {FALSE} from '../functions.js';
 import {transform2D} from '../geom/flat/transform.js';
 import {get as getProjection, getTransform} from '../proj.js';
 import Units from '../proj/Units.js';
@@ -82,6 +81,15 @@ class Geometry extends BaseObject {
    */
   closestPointXY(x, y, closestPoint, minSquaredDistance) {}
 
+  /**
+   * @param {number} x X.
+   * @param {number} y Y.
+   * @return {boolean} Contains (x, y).
+   */
+  containsXY(x, y) {
+    return false;
+  }
+
   /**
    * Return the closest point of the geometry to the passed point as
    * {@link module:ol/coordinate~Coordinate coordinate}.
@@ -248,12 +256,4 @@ class Geometry extends BaseObject {
 }
 
 
-/**
- * @param {number} x X.
- * @param {number} y Y.
- * @return {boolean} Contains (x, y).
- */
-Geometry.prototype.containsXY = FALSE;
-
-
 export default Geometry;

src/ol/render/Feature.js

@@ -1,7 +1,6 @@
 /**
  * @module ol/render/Feature
  */
-import {VOID} from '../functions.js';
 import {extend} from '../array.js';
 import {createOrUpdateFromCoordinate, createOrUpdateFromFlatCoordinates, getCenter, getHeight} from '../extent.js';
 import GeometryType from '../geom/GeometryType.js';
@@ -208,6 +207,13 @@ class RenderFeature {
     return 2;
   }
 
+  /**
+   * @return {undefined}
+   */
+  getStyleFunction() {
+    return undefined;
+  }
+
   /**
   * Get the type of this feature's geometry.
   * @return {import("../geom/GeometryType.js").default} Geometry type.
@@ -263,10 +269,4 @@ RenderFeature.prototype.getSimplifiedGeometry =
     RenderFeature.prototype.getGeometry;
 
 
-/**
- * @return {undefined}
- */
-RenderFeature.prototype.getStyleFunction = VOID;
-
-
 export default RenderFeature;

src/ol/render/canvas/Replay.js

@@ -2,7 +2,6 @@
  * @module ol/render/canvas/Replay
  */
 import {getUid} from '../../util.js';
-import {VOID} from '../../functions.js';
 import {equals, reverseSubArray} from '../../array.js';
 import {asColorLike} from '../../colorlike.js';
 import {buffer, clone, coordinateRelationship, createEmpty, createOrUpdate,
@@ -456,6 +455,11 @@ class CanvasReplay extends VectorContext {
     this.hitDetectionInstructions.push(this.beginGeometryInstruction2_);
   }
 
+  /**
+   * FIXME empty description for jsdoc
+   */
+  finish() {}
+
   /**
    * @private
    * @param {CanvasRenderingContext2D} context Context.
@@ -1081,10 +1085,4 @@ class CanvasReplay extends VectorContext {
 }
 
 
-/**
- * FIXME empty description for jsdoc
- */
-CanvasReplay.prototype.finish = VOID;
-
-
 export default CanvasReplay;

src/ol/renderer/Layer.js

@@ -7,7 +7,6 @@ import Observable from '../Observable.js';
 import TileState from '../TileState.js';
 import {listen} from '../events.js';
 import EventType from '../events/EventType.js';
-import {FALSE, VOID} from '../functions.js';
 import SourceState from '../source/State.js';
 
 class LayerRenderer extends Observable {
@@ -55,6 +54,18 @@ class LayerRenderer extends Observable {
     );
   }
 
+  /**
+   * @abstract
+   * @param {import("../coordinate.js").Coordinate} coordinate Coordinate.
+   * @param {import("../PluggableMap.js").FrameState} frameState Frame state.
+   * @param {number} hitTolerance Hit tolerance in pixels.
+   * @param {function(this: S, (import("../Feature.js").default|import("../render/Feature.js").default), import("../layer/Layer.js").default): T} callback Feature callback.
+   * @param {S} thisArg Value to use as `this` when executing `callback`.
+   * @return {T|void} Callback result.
+   * @template S,T
+   */
+  forEachFeatureAtCoordinate(coordinate, frameState, hitTolerance, callback) {}
+
   /**
    * @return {import("../layer/Layer.js").default} Layer.
    */
@@ -74,6 +85,15 @@ class LayerRenderer extends Observable {
     }
   }
 
+  /**
+   * @param {import("../coordinate.js").Coordinate} coordinate Coordinate.
+   * @param {import("../PluggableMap.js").FrameState} frameState Frame state.
+   * @return {boolean} Is there a feature at the given coordinate?
+   */
+  hasFeatureAtCoordinate(coordinate, frameState) {
+    return false;
+  }
+
   /**
    * Load the image if not already loaded, and register the image change
    * listener if needed.
@@ -218,25 +238,4 @@ class LayerRenderer extends Observable {
   }
 }
 
-
-/**
- * @param {import("../coordinate.js").Coordinate} coordinate Coordinate.
- * @param {import("../PluggableMap.js").FrameState} frameState Frame state.
- * @param {number} hitTolerance Hit tolerance in pixels.
- * @param {function(this: S, (import("../Feature.js").default|import("../render/Feature.js").default), import("../layer/Layer.js").default): T} callback Feature callback.
- * @param {S} thisArg Value to use as `this` when executing `callback`.
- * @return {T|void} Callback result.
- * @template S,T
- */
-LayerRenderer.prototype.forEachFeatureAtCoordinate = VOID;
-
-
-/**
- * @param {import("../coordinate.js").Coordinate} coordinate Coordinate.
- * @param {import("../PluggableMap.js").FrameState} frameState Frame state.
- * @return {boolean} Is there a feature at the given coordinate?
- */
-LayerRenderer.prototype.hasFeatureAtCoordinate = FALSE;
-
-
 export default LayerRenderer;

src/ol/renderer/Map.js

@@ -6,7 +6,7 @@ import Disposable from '../Disposable.js';
 import {listen, unlistenByKey} from '../events.js';
 import EventType from '../events/EventType.js';
 import {getWidth} from '../extent.js';
-import {TRUE, VOID} from '../functions.js';
+import {TRUE} from '../functions.js';
 import {visibleAtResolution} from '../layer/Layer.js';
 import {shared as iconImageCache} from '../style/IconImageCache.js';
 import {compose as composeTransform, invert as invertTransform, setFromArray as transformSetFromArray} from '../transform.js';
@@ -46,6 +46,13 @@ class MapRenderer extends Disposable {
 
   }
 
+  /**
+   * @abstract
+   * @param {import("../render/EventType.js").default} type Event type.
+   * @param {import("../PluggableMap.js").FrameState} frameState Frame state.
+   */
+  dispatchRenderEvent(type, frameState) {}
+
   /**
    * Register layer renderer constructors.
    * @param {Array<import("./Layer.js").default>} constructors Layer renderers.
@@ -283,6 +290,13 @@ class MapRenderer extends Disposable {
     }
   }
 
+  /**
+   * @abstract
+   * Render.
+   * @param {?import("../PluggableMap.js").FrameState} frameState Frame state.
+   */
+  renderFrame(frameState) {}
+
   /**
    * @param {import("../PluggableMap.js").FrameState} frameState Frame state.
    * @protected
@@ -317,20 +331,6 @@ function expireIconCache(map, frameState) {
 }
 
 
-/**
- * Render.
- * @param {?import("../PluggableMap.js").FrameState} frameState Frame state.
- */
-MapRenderer.prototype.renderFrame = VOID;
-
-
-/**
- * @param {import("../render/EventType.js").default} type Event type.
- * @param {import("../PluggableMap.js").FrameState} frameState Frame state.
- */
-MapRenderer.prototype.dispatchRenderEvent = VOID;
-
-
 /**
  * @param {import("../layer/Layer.js").State} state1 First layer state.
  * @param {import("../layer/Layer.js").State} state2 Second layer state.

src/ol/source/Tile.js

@@ -2,7 +2,6 @@
  * @module ol/source/Tile
  */
 
-import {VOID} from '../functions.js';
 import TileCache from '../TileCache.js';
 import TileState from '../TileState.js';
 import Event from '../events/Event.js';
@@ -291,19 +290,20 @@ class TileSource extends Source {
     this.tileCache.clear();
     this.changed();
   }
+
+  /**
+   * @abstract
+   * Marks a tile coord as being used, without triggering a load.
+   * @param {number} z Tile coordinate z.
+   * @param {number} x Tile coordinate x.
+   * @param {number} y Tile coordinate y.
+   * @param {import("../proj/Projection.js").default} projection Projection.
+   */
+  useTile(z, x, y, projection) {}
+
 }
 
 
-/**
- * Marks a tile coord as being used, without triggering a load.
- * @param {number} z Tile coordinate z.
- * @param {number} x Tile coordinate x.
- * @param {number} y Tile coordinate y.
- * @param {import("../proj/Projection.js").default} projection Projection.
- */
-TileSource.prototype.useTile = VOID;
-
-
 /**
  * @classdesc
  * Events emitted by {@link module:ol/source/Tile~TileSource} instances are instances of this

src/ol/webgl/Shader.js

@@ -1,7 +1,6 @@
 /**
  * @module ol/webgl/Shader
  */
-import {FALSE} from '../functions.js';
 
 /**
  * @abstract
@@ -21,6 +20,13 @@ class WebGLShader {
 
   }
 
+  /**
+   * @return {boolean} Is animated?
+   */
+  isAnimated() {
+    return false;
+  }
+
   /**
    * @abstract
    * @return {number} Type.
@@ -36,8 +42,4 @@ class WebGLShader {
 }
 
 
-/**
- * @return {boolean} Is animated?
- */
-WebGLShader.prototype.isAnimated = FALSE;
 export default WebGLShader;