last_group_node is DirectoryNode only

Author: alex-courtis

lua/nvim-tree/api.lua

@@ -10,6 +10,7 @@ local keymap = require("nvim-tree.keymap")
 local notify = require("nvim-tree.notify")
 
 local DirectoryNode = require("nvim-tree.node.directory")
+local RootNode = require("nvim-tree.node.root")
 
 local Api = {
   tree = {},
@@ -137,9 +138,9 @@ Api.tree.change_root = wrap(function(...)
 end)
 
 Api.tree.change_root_to_node = wrap_node(function(node)
-  if node.name == ".." then
+  if node.name == ".." or node:is(RootNode) then
     actions.root.change_dir.fn("..")
-  elseif node.nodes ~= nil then
+  elseif node:is(DirectoryNode) then
     actions.root.change_dir.fn(node:last_group_node().absolute_path)
   end
 end)

lua/nvim-tree/node/init.lua

@@ -70,14 +70,6 @@ function Node:is_dotfile()
   return false
 end
 
----Return self, should only be called on a DirectoryNode
----TODO #2886 remove method or leave in place, warn if practical and non too intrusive
----@return Node
-function Node:last_group_node()
-  error(string.format("\nNode:last_group_node called for '%s'", self.absolute_path))
-  return self
-end
-
 ---@param project table?
 ---@param root string?
 function Node:update_parent_statuses(project, root)