Function appendAllChildrenToContainer

code/third-party/public/app.js:9930–9958

(containerChildSet, workInProgress)

      // An unfortunate fork of appendAllChildren because we have two different parent types.

      var appendAllChildrenToContainer = function (containerChildSet, workInProgress) {
        // We only have the top Fiber that was created but we need recurse down its
        // children to find all the terminal nodes.
        var node = workInProgress.child;
        while (node !== null) {
          if (node.tag === HostComponent || node.tag === HostText) {
            appendChildToContainerChildSet(containerChildSet, node.stateNode);
          } else if (node.tag === HostPortal) {
            // If we have a portal child, then we don't want to traverse
            // down its children. Instead, we'll get insertions from each child in
            // the portal directly.
          } else if (node.child !== null) {
            node.child['return'] = node;
            node = node.child;
            continue;
          }
          if (node === workInProgress) {
            return;
          }
          while (node.sibling === null) {
            if (node['return'] === null || node['return'] === workInProgress) {
              return;
            }
            node = node['return'];
          }
          node.sibling['return'] = node['return'];
          node = node.sibling;
        }
      };
      updateHostContainer = function (workInProgress) {
        var portalOrRoot = workInProgress.stateNode;
        var childrenUnchanged = workInProgress.firstEffect === null;