From da1a899d95e6f496dd53d3bc1c4a4f547e2f23ba Mon Sep 17 00:00:00 2001
From: Bauumm <oh4@web.de>
Date: Sat, 21 Sep 2024 17:04:36 +0200
Subject: [PATCH] fix return values and annotations

---
 async.lua | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/async.lua b/async.lua
index 7b9057c..b12ea8b 100644
--- a/async.lua
+++ b/async.lua
@@ -1,7 +1,11 @@
 -- small async implementation using coroutines to suspend a function awaiting a callback
 
 ---@class promise
+---@field done_callbacks table
+---@field error_callbacks table
 ---@field executed boolean
+---@field result any
+---@field resolved boolean
 ---@private done_callbacks table
 local promise = {}
 promise.__index = promise
@@ -56,7 +60,7 @@ function promise:done(callback)
                 error("Uncaught error in done callback of promise")
             end, unpack(self.result))
         end
-        return
+        return self
     end
     self.done_callbacks[#self.done_callbacks + 1] = callback
     return self
@@ -74,7 +78,7 @@ function promise:err(callback)
                 error("Uncaught error in promise")
             end, unpack(self.result))
         end
-        return
+        return self
     end
     self.error_callbacks[#self.error_callbacks + 1] = callback
     return self