Fix warnings

lua/nvim-tree/actions/tree/modifiers/expand.lua

@@ -48,11 +48,16 @@ end
 ---@return boolean
 local function should_expand(expansion_count, node, should_descend)
   local dir = node:as(DirectoryNode)
-  return dir and not dir.open and should_descend(expansion_count, node)
+  if not dir then
+    return false
+  end
+
+  return not dir.open and should_descend(expansion_count, node)
 end
 
 
 ---@param should_descend fun(expansion_count: integer, node: Node): boolean
+---@return fun(node): any
 local function gen_iterator(should_descend)
   local expansion_count = 0
 

lua/nvim-tree/api.lua

@@ -232,16 +232,16 @@ Api.tree.collapse_all = wrap(actions.tree.modifiers.collapse.all)
 Api.tree.expand_all = wrap_node(actions.tree.modifiers.expand.all)
 
 Api.tree.toggle_descend_until = wrap_node(function(node, descend_until)
-  if node.open then
   local dir = node:as(DirectoryNode)
-    dir:expand_or_collapse("edit")
+  if dir then
+    if node.open then
+      dir:expand_or_collapse(nil)
     else
-    if node.nodes then
       actions.tree.modifiers.expand.all(node, { descend_until = descend_until })
+    end
   else
     edit("edit", node)
   end
-  end
 end)
 
 Api.tree.toggle_enable_filters = wrap_explorer_member("filters", "toggle")