Use setTimeout with any return type

src/ol/pointer/TouchSource.js

@@ -137,9 +137,9 @@ class TouchSource extends EventSource {
 
     /**
      * @private
-     * @type {number|undefined}
+     * @type {any}
      */
-    this.resetId_ = undefined;
+    this.resetId_;
 
     /**
      * Mouse event timeout: This should be long enough to
@@ -187,7 +187,7 @@ class TouchSource extends EventSource {
    * @private
    */
   resetClickCount_() {
-    this.resetId_ = window.setTimeout(
+    this.resetId_ = setTimeout(
       this.resetClickCountHandler_.bind(this),
       CLICK_COUNT_TIMEOUT);
   }