From e8e6b28b61fe14eb422fd0cfa305a483b8a9ed58 Mon Sep 17 00:00:00 2001
From: johanblumenberg <johan.blumenberg@gmail.com>
Date: Wed, 16 Jan 2019 15:38:09 +0100
Subject: [PATCH] Provide default type to first() and last()

---
 type-definitions/Immutable.d.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/type-definitions/Immutable.d.ts b/type-definitions/Immutable.d.ts
index baae41d011..0bbf0db06a 100644
--- a/type-definitions/Immutable.d.ts
+++ b/type-definitions/Immutable.d.ts
@@ -3878,7 +3878,7 @@ declare module Immutable {
      * In case the `Collection` is empty returns the optional default
      * value if provided, if no default value is provided returns undefined.
      */
-    first<NSV>(notSetValue?: NSV): V | NSV;
+    first<NSV = undefined>(notSetValue?: NSV): V | NSV;
 
     /**
      * In case the `Collection` is not empty returns the last element of the
@@ -3886,7 +3886,7 @@ declare module Immutable {
      * In case the `Collection` is empty returns the optional default
      * value if provided, if no default value is provided returns undefined.
      */
-    last<NSV>(notSetValue?: NSV): V | NSV;
+    last<NSV = undefined>(notSetValue?: NSV): V | NSV;
 
     // Reading deep values