3 files changed, 14 insertions, 6 deletions
diff --git a/lang/lua/astal/binding.lua b/lang/lua/astal/binding.lua
index 81d2177..9708ef8 100644
--- a/lang/lua/astal/binding.lua
+++ b/lang/lua/astal/binding.lua
@@ -5,7 +5,9 @@ local GObject = lgi.require("GObject", "2.0")
 ---@field emitter table|Variable
 ---@field property? string
 ---@field transform_fn function
+---@overload fun(emitter: table | userdata, property?: string): Binding
 local Binding = {}
+Binding.__index = Binding
 
 ---@param emitter table | userdata
 ---@param property? string
@@ -68,5 +70,8 @@ function Binding:subscribe(callback)
     end
 end
 
-Binding.__index = Binding
-return Binding
+return setmetatable(Binding, {
+    __call = function(_, emitter, prop)
+        return Binding.new(emitter, prop)
+    end,
+})
diff --git a/lang/lua/astal/gtk3/widget.lua b/lang/lua/astal/gtk3/widget.lua
index beaad6c..1a4454e 100644
--- a/lang/lua/astal/gtk3/widget.lua
+++ b/lang/lua/astal/gtk3/widget.lua
@@ -3,7 +3,9 @@ local Astal = lgi.require("Astal", "3.0")
 local Gtk = lgi.require("Gtk", "3.0")
 local astalify = require("astal.gtk3.astalify")
 
+---@overload fun(ctor: any): function
 local Widget = {
+    ---@overload fun(ctor: any): function
     astalify = astalify,
     Box = astalify(Astal.Box),
     Button = astalify(Astal.Button),
diff --git a/lang/lua/astal/variable.lua b/lang/lua/astal/variable.lua
index f06fd16..7a0d712 100644
--- a/lang/lua/astal/variable.lua
+++ b/lang/lua/astal/variable.lua
@@ -17,6 +17,7 @@ local Process = require("astal.process")
 ---@field private poll_fn? function
 ---@field private watch_transform? fun(next: any, prev: any): any
 ---@field private watch_exec? string[] | string
+---@overload fun(value?: any): Variable
 local Variable = {}
 Variable.__index = Variable
 
@@ -24,19 +25,19 @@ Variable.__index = Variable
 ---@return Variable
 function Variable.new(value)
     local v = Astal.VariableBase()
-    local variable = setmetatable({
-        variable = v,
-        _value = value,
-    }, Variable)
+    local variable = setmetatable({ variable = v, _value = value }, Variable)
+
     v.on_dropped = function()
         variable:stop_watch()
         variable:stop_poll()
     end
+
     v.on_error = function(_, err)
         if variable.err_handler then
             variable.err_handler(err)
         end
     end
+
     return variable
 end