Replace instanceof checks with other logic

src/ol/layer/Group.js

@@ -84,9 +84,8 @@ class LayerGroup extends BaseLayer {
       if (Array.isArray(layers)) {
         layers = new Collection(layers.slice(), {unique: true});
       } else {
-        assert(layers instanceof Collection,
+        assert(typeof /** @type {?} */ (layers).getArray === 'function',
           43); // Expected `layers` to be an array or a `Collection`
-        layers = layers;
       }
     } else {
       layers = new Collection(undefined, {unique: true});

src/ol/layer/Vector.js

@@ -41,7 +41,7 @@ import {createDefaultStyle, toFunction as toStyleFunction} from '../style/Style.
  * @property {boolean} [declutter=false] Declutter images and text. Decluttering is applied to all
  * image and text styles, and the priority is defined by the z-index of the style. Lower z-index
  * means higher priority.
- * @property {import("../style/Style.js").default|Array<import("../style/Style.js").default>|import("../style/Style.js").StyleFunction} [style] Layer style. See
+ * @property {import("../style/Style.js").StyleLike} [style] Layer style. See
  * {@link module:ol/style} for default style which will be used if this is not defined.
  * @property {boolean} [updateWhileAnimating=false] When set to `true` and `renderMode`
  * is `vector`, feature batches will be recreated during animations. This means that no
@@ -119,7 +119,7 @@ class VectorLayer extends Layer {
 
     /**
     * User provided style.
-    * @type {import("../style/Style.js").default|Array<import("../style/Style.js").default>|import("../style/Style.js").StyleFunction}
+    * @type {import("../style/Style.js").StyleLike}
     * @private
     */
     this.style_ = null;
@@ -196,7 +196,7 @@ class VectorLayer extends Layer {
   /**
   * Get the style for features.  This returns whatever was passed to the `style`
   * option at construction or to the `setStyle` method.
-  * @return {import("../style/Style.js").default|Array<import("../style/Style.js").default>|import("../style/Style.js").StyleFunction}
+  * @return {import("../style/Style.js").StyleLike}
   *     Layer style.
   * @api
   */

src/ol/layer/VectorTile.js

@@ -70,7 +70,7 @@ export const RenderType = {
  * image and text styles, and the priority is defined by the z-index of the style. Lower z-index
  * means higher priority. When set to `true`, a `renderMode` of `'image'` will be overridden with
  * `'hybrid'`.
- * @property {import("../style/Style.js").default|Array<import("../style/Style.js").default>|import("../style/Style.js").StyleFunction} [style] Layer style. See
+ * @property {import("../style/Style.js").StyleLike} [style] Layer style. See
  * {@link module:ol/style} for default style which will be used if this is not defined.
  * @property {boolean} [updateWhileAnimating=false] When set to `true`, feature batches will be
  * recreated during animations. This means that no vectors will be shown clipped, but the setting
@@ -82,7 +82,7 @@ export const RenderType = {
  * means no preloading.
  * @property {import("../render.js").OrderFunction} [renderOrder] Render order. Function to be used when sorting
  * features before rendering. By default features are drawn in the order that they are created.
- * @property {import("../style/Style.js").default|Array<import("../style/Style.js").default>|import("../style/Style.js").StyleFunction} [style] Layer style. See
+ * @property {import("../style/Style.js").StyleLike} [style] Layer style. See
  * {@link module:ol/style} for default style which will be used if this is not defined.
  * @property {boolean} [useInterimTilesOnError=true] Use interim tiles on error.
  */