From 9abbc6f1cad2a6ddac8339dc2eb3b202b0d94ae8 Mon Sep 17 00:00:00 2001
From: Jason Beetham <beefers331@gmail.com>
Date: Fri, 28 Mar 2025 01:09:43 -0600
Subject: [PATCH] Fixes #66 by skipping over sink types in the sameType macro

---
 union.nimble        |  2 +-
 union/typeutils.nim | 11 +++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/union.nimble b/union.nimble
index 0f2c3a4..ed60e2d 100644
--- a/union.nimble
+++ b/union.nimble
@@ -1,6 +1,6 @@
 # Package
 
-version       = "0.2.0"
+version       = "0.2.1"
 author        = "Leorize"
 description   = "Anonymous unions in Nim"
 license       = "MIT"
diff --git a/union/typeutils.nim b/union/typeutils.nim
index 8068635..5ab4e64 100644
--- a/union/typeutils.nim
+++ b/union/typeutils.nim
@@ -56,6 +56,13 @@ func newTypedesc*(n: NimNode): NimNode =
   ## Create a typedesc[n]
   nnkBracketExpr.newTree(bindSym"typedesc", copy(n))
 
+
+proc skipSink(n: NimNode): NimNode = 
+  if n.kind == nnkBracketExpr and n[0].eqIdent"sink":
+    n[1]
+  else:
+    n
+
 func sameType*(a, b: NimNode): bool =
   ## A variant of sameType to workaround:
   ##
@@ -63,6 +70,10 @@ func sameType*(a, b: NimNode): bool =
   ##
   ## * https://github.com/nim-lang/Nim/issues/19072
 
+  let
+    a = a.skipSink()
+    b = b.skipSink()
+
   # XXX: compiler bug workaround; see https://github.com/nim-lang/Nim/issues/18867
   if macros.sameType(a, b) or macros.sameType(b, a):
     # XXX: compiler bug workaround; see https://github.com/nim-lang/Nim/issues/19072