remove arrow function, add JSDoc and restore original Draw

src/ol/events/condition.js

@@ -230,14 +230,28 @@ export const mouseOnly = function(mapBrowserEvent) {
   return pointerEvent.pointerType == 'mouse';
 };
 
-export const touchOnly = (mapBrowserEvent) => {
+/**
+ * Return `true` if the event originates from a touchable device.
+ *
+ * @param {import("../MapBrowserEvent.js").default} mapBrowserEvent Map browser event.
+ * @return {boolean} True if the event originates from a touchable device.
+ * @api
+ */
+export const touchOnly = function(mapBrowserEvent) {
   const pointerEvt = /** @type {import("../MapBrowserPointerEvent").default} */ (mapBrowserEvent).pointerEvent;
   assert(pointerEvt !== undefined, 56); // mapBrowserEvent must originate from a pointer event
   // see http://www.w3.org/TR/pointerevents/#widl-PointerEvent-pointerType
   return pointerEvt.pointerType === 'touch';
 };
 
-export const penOnly = (mapBrowserEvent) => {
+/**
+ * Return `true` if the event originates from a digital pen.
+ *
+ * @param {import("../MapBrowserEvent.js").default} mapBrowserEvent Map browser event.
+ * @return {boolean} True if the event originates from a digital pen.
+ * @api
+ */
+export const penOnly = function(mapBrowserEvent) {
   const pointerEvt = /** @type {import("../MapBrowserPointerEvent").default} */ (mapBrowserEvent).pointerEvent;
   assert(pointerEvt !== undefined, 56); // mapBrowserEvent must originate from a pointer event
   // see http://www.w3.org/TR/pointerevents/#widl-PointerEvent-pointerType

src/ol/interaction/Draw.js

@@ -528,7 +528,7 @@ class Draw extends PointerInteraction {
   handleDownEvent(event) {
     this.shouldHandle_ = !this.freehand_;
 
-    if (this.freehand_ && ((this.condition_ && this.condition_(event)) || true)) {
+    if (this.freehand_) {
       this.downPx_ = event.pixel;
       if (!this.finishCoordinate_) {
         this.startDrawing_(event);
@@ -548,6 +548,7 @@ class Draw extends PointerInteraction {
     }
   }
 
+
   /**
    * @inheritDoc
    */