typechecked optargs constructors for decorators

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

@@ -7,36 +7,33 @@ local Decorator = require("nvim-tree.renderer.decorator")
 local DirectoryNode = require("nvim-tree.node.directory")
 
 ---@class (exact) DecoratorModified: Decorator
----@field icon HighlightedString|nil
-local DecoratorModified = Decorator:new()
+---@field icon HighlightedString?
+local DecoratorModified = Decorator:extend()
 
----Static factory method
----@param opts table
----@param explorer Explorer
----@return DecoratorModified
-function DecoratorModified:create(opts, explorer)
-  ---@type DecoratorModified
-  local o = {
-    explorer = explorer,
-    enabled = opts.modified.enable,
-    hl_pos = HL_POSITION[opts.renderer.highlight_modified] or HL_POSITION.none,
-    icon_placement = ICON_PLACEMENT[opts.renderer.icons.modified_placement] or ICON_PLACEMENT.none,
-  }
-  o = self:new(o)
+---@class DecoratorModified
+---@overload fun(explorer: DecoratorArgs): DecoratorModified
 
-  if not o.enabled then
-    return o
+---@private
+---@param args DecoratorArgs
+function DecoratorModified:new(args)
+  Decorator.new(self, {
+    explorer       = args.explorer,
+    enabled        = true,
+    hl_pos         = HL_POSITION[args.explorer.opts.renderer.highlight_modified] or HL_POSITION.none,
+    icon_placement = ICON_PLACEMENT[args.explorer.opts.renderer.icons.modified_placement] or ICON_PLACEMENT.none,
+  })
+
+  if not self.enabled then
+    return
   end
 
-  if opts.renderer.icons.show.modified then
-    o.icon = {
-      str = opts.renderer.icons.glyphs.modified,
+  if self.explorer.opts.renderer.icons.show.modified then
+    self.icon = {
+      str = self.explorer.opts.renderer.icons.glyphs.modified,
       hl = { "NvimTreeModifiedIcon" },
     }
-    o:define_sign(o.icon)
+    self:define_sign(self.icon)
   end
-
-  return o
 end
 
 ---Modified icon: modified.enable, renderer.icons.show.modified and node is modified