Function updateElement

docs/index.js:6326–6361

(returnFiber, current, element, lanes)

    return current;
  }
  function updateElement(returnFiber, current, element, lanes) {
    var elementType = element.type;
    if (elementType === REACT_FRAGMENT_TYPE)
      return updateFragment(
        returnFiber,
        current,
        element.props.children,
        lanes,
        element.key
      );
    if (
      null !== current &&
      (current.elementType === elementType ||
        ("object" === typeof elementType &&
          null !== elementType &&
          elementType.$$typeof === REACT_LAZY_TYPE &&
          resolveLazy(elementType) === current.type))
    )
      return (
        (current = useFiber(current, element.props)),
        coerceRef(current, element),
        (current.return = returnFiber),
        current
      );
    current = createFiberFromTypeAndProps(
      element.type,
      element.key,
      element.props,
      null,
      returnFiber.mode,
      lanes
    );
    coerceRef(current, element);
    current.return = returnFiber;
    return current;
  }
  function updatePortal(returnFiber, current, portal, lanes) {
    if (
      null === current ||