Function updatePortal

docs/index.js:6362–6377

(returnFiber, current, portal, lanes)

    return current;
  }
  function updatePortal(returnFiber, current, portal, lanes) {
    if (
      null === current ||
      4 !== current.tag ||
      current.stateNode.containerInfo !== portal.containerInfo ||
      current.stateNode.implementation !== portal.implementation
    )
      return (
        (current = createFiberFromPortal(portal, returnFiber.mode, lanes)),
        (current.return = returnFiber),
        current
      );
    current = useFiber(current, portal.children || []);
    current.return = returnFiber;
    return current;
  }
  function updateFragment(returnFiber, current, fragment, lanes, key) {
    if (null === current || 7 !== current.tag)
      return (