From aa279f33c0a6f8f19301377fc2eeeb2156f07c36 Mon Sep 17 00:00:00 2001
From: Alexander Bulancov <6594487+trinistr@users.noreply.github.com>
Date: Thu, 12 Feb 2026 23:35:52 +0300
Subject: [PATCH] Add variants with positional argument to
 `Hash#transform_keys` and `#transform_keys!`

`#transform_keys` accepts an optional positional argument for mapping keys, which can be combined with a block.
---
 core/hash.rbs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/core/hash.rbs b/core/hash.rbs
index 4061f7745..36a7268bb 100644
--- a/core/hash.rbs
+++ b/core/hash.rbs
@@ -1870,7 +1870,9 @@ class Hash[unchecked out K, unchecked out V] < Object
   # Values](rdoc-ref:Hash@Methods+for+Transforming+Keys+and+Values).
   #
   def transform_keys: () -> Enumerator[K, Hash[untyped, V]]
+                    | [A] (Hash[K, A]) -> Hash[A, V]
                     | [A] () { (K) -> A } -> Hash[A, V]
+                    | [A] (Hash[K, A]) { (K) -> A } -> Hash[A, V]
 
   # <!--
   #   rdoc-file=hash.c
@@ -1963,7 +1965,9 @@ class Hash[unchecked out K, unchecked out V] < Object
   # Values](rdoc-ref:Hash@Methods+for+Transforming+Keys+and+Values).
   #
   def transform_keys!: () -> Enumerator[K, self]
+                     | (Hash[K, K]) -> self
                      | () { (K) -> K } -> self
+                     | (Hash[K, K]) { (K) -> K } -> self
 
   # <!--
   #   rdoc-file=hash.c