Function updateComponentPreRender

packages/runtime-core/src/renderer.ts:1623–1640

(
    instance: ComponentInternalInstance,
    nextVNode: VNode,
    optimized: boolean,
  )

  }

  const updateComponentPreRender = (
    instance: ComponentInternalInstance,
    nextVNode: VNode,
    optimized: boolean,
  ) => {
    nextVNode.component = instance
    const prevProps = instance.vnode.props
    instance.vnode = nextVNode
    instance.next = null
    updateProps(instance, nextVNode.props, prevProps, optimized)
    updateSlots(instance, nextVNode.children, optimized)

    pauseTracking()
    // props update may have triggered pre-flush watchers.
    // flush them before the render update.
    flushPreFlushCbs(instance)
    resetTracking()
  }

  const patchChildren: PatchChildrenFn = (
    n1,