fix: file creation in empty folder without root_folder_label

Author: geril2207

lua/nvim-tree/lib.lua

@@ -30,7 +30,13 @@ function M.get_node_at_cursor()
     return { name = ".." }
   end
 
-  return utils.get_nodes_by_line(core.get_explorer().nodes, core.get_nodes_starting_line())[line]
+  local nodes_by_line = utils.get_nodes_by_line(core.get_explorer().nodes, core.get_nodes_starting_line())[line]
+
+  if nodes_by_line == nil and line == 1 and not view.is_root_folder_visible(core.get_cwd()) then
+    return { name = ".." }
+  end
+
+  return nodes_by_line
 end
 
 ---Create a sanitized partial copy of a node, populating children recursively.