diff --git a/data/scripts/types/signal.lua b/data/scripts/types/signal.lua
index ec3a520..979bf47 100644
--- a/data/scripts/types/signal.lua
+++ b/data/scripts/types/signal.lua
@@ -1,17 +1,26 @@
-local util = require "util"
+---@class Signal
+local Signal = {
+  _connections = {}
+}
 
-local Signal = {}
+local util = require "util"
 
 Signal.__index = Signal
 
+---Connects f to this signal. When the signal is emmitted, this function will be called.
+---@param f function
 function Signal:connect(f)
   util.list_insert_once(self._connections, f)
 end
 
+---Disconnects f from this signal.
+---@param f function
 function Signal:disconnect(f)
   util.list_remove_value(self._connections, f)
 end
 
+---Emits the signal, calling the connecting functions with the provided params.
+---@param ... any
 function Signal:emit(...)
   -- don't care about order
   for _, v in pairs(self._connections) do
@@ -19,6 +28,8 @@ function Signal:emit(...)
   end
 end
 
+---Constructs a new signal.
+---@return Signal
 function Signal.new()
   local s = {
     _connections = {},