Function unmountHostComponents

docs/external/js/react-dom.development.js:20529–20629

(finishedRoot, current, renderPriorityLevel)

  }

  function unmountHostComponents(finishedRoot, current, renderPriorityLevel) {
    // We only have the top Fiber that was deleted but we need to recurse down its
    // children to find all the terminal nodes.
    var node = current; // Each iteration, currentParent is populated with node's host parent if not
    // currentParentIsValid.

    var currentParentIsValid = false; // Note: these two variables *must* always be updated together.

    var currentParent;
    var currentParentIsContainer;

    while (true) {
      if (!currentParentIsValid) {
        var parent = node.return;

        findParent: while (true) {
          if (!(parent !== null)) {
            {
              throw Error( "Expected to find a host parent. This error is likely caused by a bug in React. Please file an issue." );
            }
          }

          var parentStateNode = parent.stateNode;

          switch (parent.tag) {
            case HostComponent:
              currentParent = parentStateNode;
              currentParentIsContainer = false;
              break findParent;

            case HostRoot:
              currentParent = parentStateNode.containerInfo;
              currentParentIsContainer = true;
              break findParent;

            case HostPortal:
              currentParent = parentStateNode.containerInfo;
              currentParentIsContainer = true;
              break findParent;

          }

          parent = parent.return;
        }

        currentParentIsValid = true;
      }

      if (node.tag === HostComponent || node.tag === HostText) {
        commitNestedUnmounts(finishedRoot, node, renderPriorityLevel); // After all the children have unmounted, it is now safe to remove the
        // node from the tree.

        if (currentParentIsContainer) {
          removeChildFromContainer(currentParent, node.stateNode);
        } else {
          removeChild(currentParent, node.stateNode);
        } // Don't visit children because we already visited them.