From d8c3bb9264865a927c346d27ceff72e360fd117c Mon Sep 17 00:00:00 2001
From: Lucien Greathouse <me@lpghatguy.com>
Date: Fri, 14 Sep 2018 13:45:27 -0700
Subject: [PATCH] Convert Promise.Status to be a userdata with __tostring

---
 lib/init.lua | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/lib/init.lua b/lib/init.lua
index 7cedb40..185d13c 100644
--- a/lib/init.lua
+++ b/lib/init.lua
@@ -62,14 +62,26 @@ local function isEmpty(t)
 	return next(t) == nil
 end
 
+local function createSymbol(name)
+	assert(type(name) == "string", "createSymbol requires `name` to be a string.")
+
+	local symbol = newproxy(true)
+
+	getmetatable(symbol).__tostring = function()
+		return ("Symbol(%s)"):format(name)
+	end
+
+	return symbol
+end
+
 local Promise = {}
 Promise.prototype = {}
 Promise.__index = Promise.prototype
 
 Promise.Status = {
-	Started = "Started",
-	Resolved = "Resolved",
-	Rejected = "Rejected",
+	Started = createSymbol("Started"),
+	Resolved = createSymbol("Resolved"),
+	Rejected = createSymbol("Rejected"),
 }
 
 --[[