Function getNearestMountedFiber

lib/assets/react-source/development/react.js:6553–6589

(fiber)

	var ReactCurrentOwner = ReactSharedInternals.ReactCurrentOwner;
	function getNearestMountedFiber(fiber) {
	  var node = fiber;
	  var nearestMounted = fiber;

	  if (!fiber.alternate) {
	    // If there is no alternate, this might be a new tree that isn't inserted
	    // yet. If it is, then it will have a pending insertion effect on it.
	    var nextNode = node;

	    do {
	      node = nextNode;

	      if ((node.effectTag & (Placement | Hydrating)) !== NoEffect) {
	        // This is an insertion or in-progress hydration. The nearest possible
	        // mounted fiber is the parent but we need to continue to figure out
	        // if that one is still mounted.
	        nearestMounted = node.return;
	      }

	      nextNode = node.return;
	    } while (nextNode);
	  } else {
	    while (node.return) {
	      node = node.return;
	    }
	  }

	  if (node.tag === HostRoot) {
	    // TODO: Check if this was a nested HostRoot when used with
	    // renderContainerIntoSubtree.
	    return nearestMounted;
	  } // If we didn't hit the root, that means that we're in an disconnected tree
	  // that has been unmounted.


	  return null;
	}
	function getSuspenseInstanceFromFiber(fiber) {
	  if (fiber.tag === SuspenseComponent) {
	    var suspenseState = fiber.memoizedState;