src/vs/base/browser/globalPointerMoveMonitor.ts/standardPointerMoveMerger
export function standardPointerMoveMerger(lastEvent: IPointerMoveEventData | null, currentEvent: PointerEvent): IPointerMoveEventData {
	currentEvent.preventDefault();
	return {
		leftButton: (currentEvent.button === 0),
		buttons: currentEvent.buttons,
		pageX: currentEvent.pageX,
		pageY: currentEvent.pageY
	};
}