src/vs/base/browser/ui/list/listView.ts/equalsDragFeedback
function equalsDragFeedback(f1: number[] | undefined, f2: number[] | undefined): boolean {
	if (Array.isArray(f1) && Array.isArray(f2)) {
		return equals(f1, f2!);
	}

	return f1 === f2;
}