From 71f0d60b04ab0d72a7e2b05251ecfaa4ddf33052 Mon Sep 17 00:00:00 2001
From: septs <github@septs.pw>
Date: Wed, 11 Jun 2025 08:00:41 +0800
Subject: [PATCH] fix: allow readonly map entry constructor

---
 type-definitions/immutable.d.ts  | 2 +-
 type-definitions/ts-tests/map.ts | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/type-definitions/immutable.d.ts b/type-definitions/immutable.d.ts
index 43119ccab6..5882a7b0ef 100644
--- a/type-definitions/immutable.d.ts
+++ b/type-definitions/immutable.d.ts
@@ -617,7 +617,7 @@ declare namespace Immutable {
    * but since Immutable Map keys can be of any type the argument to `get()` is
    * not altered.
    */
-  function Map<K, V>(collection?: Iterable<[K, V]>): Map<K, V>;
+  function Map<K, V>(collection?: Iterable<readonly [K, V]>): Map<K, V>;
   function Map<R extends { [key in PropertyKey]: unknown }>(obj: R): MapOf<R>;
   function Map<V>(obj: { [key: string]: V }): Map<string, V>;
   function Map<K extends string | symbol, V>(obj: { [P in K]?: V }): Map<K, V>;
diff --git a/type-definitions/ts-tests/map.ts b/type-definitions/ts-tests/map.ts
index 59f39eb36c..cd8fa7b237 100644
--- a/type-definitions/ts-tests/map.ts
+++ b/type-definitions/ts-tests/map.ts
@@ -10,6 +10,10 @@ test('#constructor', () => {
 
   expect(Map([['a', 'a']])).type.toBe<Map<string, string>>();
 
+  expect(Map([] as ReadonlyArray<readonly [number, string]>)).type.toBe<
+    Map<number, string>
+  >();
+
   expect(Map(List<[number, string]>([[1, 'a']]))).type.toBe<
     Map<number, string>
   >();