From 7901f351ebb0fc45493f94c43fc05d42a317cd66 Mon Sep 17 00:00:00 2001
From: Mark Fulton <mfulton26@gmail.com>
Date: Thu, 20 May 2021 09:18:58 -0500
Subject: [PATCH] fix(WeakMapConstructor): readonly iterable items (#43905)

like `MapConstructor`, `WeakMapConstructor` should support receiving `Iterable<readonly [K, V]>` instead of `Iterable<[K, V]>`; otherwise tuples creates with `as const`, etc. cannot be safely passed in without casts, etc.
---
 src/lib/es2015.iterable.d.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lib/es2015.iterable.d.ts b/src/lib/es2015.iterable.d.ts
index b5f0132c1d9..f8805a30eb2 100644
--- a/src/lib/es2015.iterable.d.ts
+++ b/src/lib/es2015.iterable.d.ts
@@ -143,7 +143,7 @@ interface MapConstructor {
 interface WeakMap<K extends object, V> { }
 
 interface WeakMapConstructor {
-    new <K extends object, V>(iterable: Iterable<[K, V]>): WeakMap<K, V>;
+    new <K extends object, V>(iterable: Iterable<readonly [K, V]>): WeakMap<K, V>;
 }
 
 interface Set<T> {