NativeScript
diff --git a/‎packages/core/data/dom-events/dom-event.ts
Copy file name to clipboardExpand all lines: packages/core/data/dom-events/dom-event.ts
+5-1Lines changed: 5 additions & 1 deletion b/‎packages/core/data/dom-events/dom-event.ts
Copy file name to clipboardExpand all lines: packages/core/data/dom-events/dom-event.ts
+5-1Lines changed: 5 additions & 1 deletion
@@ -208,9 +208,13 @@ export class DOMEvent implements Event {
 			return recycledEventPath;
 		}
 
+		// Determining the function up-front (rather than inside the loop) saves
+		// 50 nanoseconds per dispatchTo() call.
+		const insert = path === 'capture' ? recycledEventPath.unshift.bind(recycledEventPath) : recycledEventPath.push.bind(recycledEventPath);
+
 		let nextResponder = responder.parent;
 		while (nextResponder) {
-			path === 'capture' ? recycledEventPath.unshift(nextResponder) : recycledEventPath.push(nextResponder);
+			insert(nextResponder);
 
 			// TODO: decide whether to walk up from Page to Frame, and whether
 			// to then walk from Frame to Application or something.