Function cloneIfMounted

packages/runtime-core/src/vnode.ts:811–816

(child: VNode)

// optimized normalization for template-compiled render fns
export function cloneIfMounted(child: VNode): VNode {
  return (child.el === null && child.patchFlag !== PatchFlags.CACHED) ||
    child.memo
    ? child
    : cloneVNode(child)
}

export function normalizeChildren(vnode: VNode, children: unknown): void {
  let type = 0