Revert "refactor(#2871, #2886): multi instance: node classes created (#2916)"

This reverts commit 38aac09151.

lua/nvim-tree/renderer/decorator/hidden.lua

@@ -1,24 +1,23 @@
 local HL_POSITION = require("nvim-tree.enum").HL_POSITION
 local ICON_PLACEMENT = require("nvim-tree.enum").ICON_PLACEMENT
+local explorer_node = require("nvim-tree.explorer.node")
 local Decorator = require("nvim-tree.renderer.decorator")
 
 ---@class (exact) DecoratorHidden: Decorator
----@field icon HighlightedString?
+---@field icon HighlightedString|nil
 local DecoratorHidden = Decorator:new()
 
----Static factory method
 ---@param opts table
 ---@param explorer Explorer
 ---@return DecoratorHidden
-function DecoratorHidden:create(opts, explorer)
-  ---@type DecoratorHidden
-  local o = {
+function DecoratorHidden:new(opts, explorer)
+  local o = Decorator.new(self, {
     explorer = explorer,
     enabled = true,
     hl_pos = HL_POSITION[opts.renderer.highlight_hidden] or HL_POSITION.none,
     icon_placement = ICON_PLACEMENT[opts.renderer.icons.hidden_placement] or ICON_PLACEMENT.none,
-  }
-  o = self:new(o) --[[@as DecoratorHidden]]
+  })
+  ---@cast o DecoratorHidden
 
   if opts.renderer.icons.show.hidden then
     o.icon = {
@@ -35,7 +34,7 @@ end
 ---@param node Node
 ---@return HighlightedString[]|nil icons
 function DecoratorHidden:calculate_icons(node)
-  if self.enabled and node:is_dotfile() then
+  if self.enabled and explorer_node.is_dotfile(node) then
     return { self.icon }
   end
 end
@@ -44,7 +43,7 @@ end
 ---@param node Node
 ---@return string|nil group
 function DecoratorHidden:calculate_highlight(node)
-  if not self.enabled or self.hl_pos == HL_POSITION.none or not node:is_dotfile() then
+  if not self.enabled or self.hl_pos == HL_POSITION.none or (not explorer_node.is_dotfile(node)) then
     return nil
   end