Function updateHOCHostEl

packages/runtime-core/src/componentRenderUtils.ts:473–496

(
  { vnode, parent, suspense }: ComponentInternalInstance,
  el: typeof vnode.el, // HostNode
)

}

export function updateHOCHostEl(
  { vnode, parent, suspense }: ComponentInternalInstance,
  el: typeof vnode.el, // HostNode
): void {
  while (parent) {
    const root = parent.subTree
    if (root.suspense && root.suspense.activeBranch === vnode) {
      // Suspense proxies its active branch host node, so keep propagating from
      // the boundary vnode to any wrapper components above it.
      root.suspense.vnode.el = root.el = el
      vnode = root
    }
    if (root === vnode) {
      ;(vnode = parent.vnode).el = el
      parent = parent.parent
    } else {
      break
    }
  }
  // also update suspense vnode el
  if (suspense && suspense.activeBranch === vnode) {
    suspense.vnode.el = el
  }
}