From 7a05f51b8d4078f5a20057550a4d0fcbcd0d2771 Mon Sep 17 00:00:00 2001
From: Gregor MacDougall <gregor@freerunningtechnologies.com>
Date: Fri, 27 Jan 2017 21:53:38 -0500
Subject: [PATCH] Correct Jest toBeCloseTo signature

In Jest .toBeCloseTo's second parameter is optional with a default of 5.

See:
https://facebook.github.io/jest/docs/api.html#tobeclosetonumber-numdigits

This updates the type definition to make this parameter optional as
well.
---
 jest/index.d.ts    | 2 +-
 jest/jest-tests.ts | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/jest/index.d.ts b/jest/index.d.ts
index f376ea5bcc..cb25dcc758 100644
--- a/jest/index.d.ts
+++ b/jest/index.d.ts
@@ -117,7 +117,7 @@ declare namespace jest {
         toBe(expected: any): void;
         toBeCalled(): void;
         toBeCalledWith(...args: any[]): void;
-        toBeCloseTo(expected: number, delta: number): void;
+        toBeCloseTo(expected: number, delta?: number): void;
         toBeDefined(): void;
         toBeFalsy(): void;
         toBeGreaterThan(expected: number): void;
diff --git a/jest/jest-tests.ts b/jest/jest-tests.ts
index 913a671fa1..4f54d44236 100644
--- a/jest/jest-tests.ts
+++ b/jest/jest-tests.ts
@@ -147,6 +147,10 @@ describe('compartion', function () {
     it('works sanely with simple decimals', function () {
         expect(0.2 + 0.1).toBeCloseTo(0.3, 5);
     });
+
+    it('works sanely with simple decimals and the default delta', function () {
+        expect(0.2 + 0.1).toBeCloseTo(0.3);
+    });
 });
 
 describe('toThrow API', function () {