From 21fa1faabf0a10cd61da32a2cf4aece9bd766ab6 Mon Sep 17 00:00:00 2001
From: Iago Melanias <iago@upnid.com>
Date: Thu, 21 Feb 2019 20:57:13 -0300
Subject: [PATCH 1/2] nullable(): make argument isNullable optional

Following the repository documentation, the argument isNullable is optional because it has the default value `true`.
https://github.com/jquense/yup#mixednullableisnullable-boolean--true-schema
---
 types/yup/index.d.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/types/yup/index.d.ts b/types/yup/index.d.ts
index dc73ae6bd9..7e03517143 100644
--- a/types/yup/index.d.ts
+++ b/types/yup/index.d.ts
@@ -70,7 +70,7 @@ export interface Schema<T> {
     withMutation(fn: (current: this) => void): void;
     default(value: any): this;
     default(): T;
-    nullable(isNullable: boolean): this;
+    nullable(isNullable?: boolean): this;
     required(message?: TestOptionsMessage): this;
     notRequired(): this;
     typeError(message?: TestOptionsMessage): this;

From b5e530db8f96b6fc6a0f6dec59fbc33329873770 Mon Sep 17 00:00:00 2001
From: Iago Melanias <iago@upnid.com>
Date: Thu, 21 Feb 2019 21:03:02 -0300
Subject: [PATCH 2/2] nullable(): add test to ensure isNullable argument is
 optional

---
 types/yup/yup-tests.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/types/yup/yup-tests.ts b/types/yup/yup-tests.ts
index c6717e95ad..fdead13b2b 100644
--- a/types/yup/yup-tests.ts
+++ b/types/yup/yup-tests.ts
@@ -148,6 +148,7 @@ mixed.default({ number: 5 });
 mixed.default(() => ({ number: 5 }));
 mixed.default();
 mixed.nullable(true);
+mixed.nullable();
 mixed.required();
 mixed.required("Foo");
 mixed.required(() => "Foo");