Function updateElement

dash/deps/react-dom@18.3.1.js:13278–13311

(returnFiber, current, element, lanes)

    }

    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 (current !== null) {
        if (current.elementType === elementType || ( // Keep this check inline so it only runs on the false path:
         isCompatibleFamilyForHotReloading(current, element) ) || // Lazy types should reconcile their resolved type.
        // We need to do this after the Hot Reloading check above,
        // because hot reloading has different semantics than prod because
        // it doesn't resuspend. So we can't let the call below suspend.
        typeof elementType === 'object' && elementType !== null && elementType.$$typeof === REACT_LAZY_TYPE && resolveLazy(elementType) === current.type) {
          // Move based on index
          var existing = useFiber(current, element.props);
          existing.ref = coerceRef(returnFiber, current, element);
          existing.return = returnFiber;

          {
            existing._debugSource = element._source;
            existing._debugOwner = element._owner;
          }

          return existing;
        }
      } // Insert


      var created = createFiberFromElement(element, returnFiber.mode, lanes);
      created.ref = coerceRef(returnFiber, current, element);
      created.return = returnFiber;
      return created;
    }

    function updatePortal(returnFiber, current, portal, lanes) {
      if (current === null || current.tag !== HostPortal || current.stateNode.containerInfo !== portal.containerInfo || current.stateNode.implementation !== portal.implementation) {