From 7ad616a177ba297699afa11fd8b31266fe27b29a Mon Sep 17 00:00:00 2001
From: Dzmitry Shylovich <DmitryShilovich@gmail.com>
Date: Thu, 26 Jan 2017 18:23:53 +0300
Subject: [PATCH] fix(common): DatePipe doesn't throw for NaN (#14117)

Fixes #14103

PR Close #14117
---
 modules/@angular/common/src/pipes/date_pipe.ts       | 2 +-
 modules/@angular/common/test/pipes/date_pipe_spec.ts | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/modules/@angular/common/src/pipes/date_pipe.ts b/modules/@angular/common/src/pipes/date_pipe.ts
index ef32b3b013..872cef2975 100644
--- a/modules/@angular/common/src/pipes/date_pipe.ts
+++ b/modules/@angular/common/src/pipes/date_pipe.ts
@@ -103,7 +103,7 @@ export class DatePipe implements PipeTransform {
   transform(value: any, pattern: string = 'mediumDate'): string {
     let date: Date;
 
-    if (isBlank(value)) return null;
+    if (isBlank(value) || value !== value) return null;
 
     if (typeof value === 'string') {
       value = value.trim();
diff --git a/modules/@angular/common/test/pipes/date_pipe_spec.ts b/modules/@angular/common/test/pipes/date_pipe_spec.ts
index a0eb9d9c43..1db44aa928 100644
--- a/modules/@angular/common/test/pipes/date_pipe_spec.ts
+++ b/modules/@angular/common/test/pipes/date_pipe_spec.ts
@@ -53,6 +53,8 @@ export function main() {
 
       it('should return null for empty string', () => expect(pipe.transform('')).toEqual(null));
 
+      it('should return null for NaN', () => expect(pipe.transform(Number.NaN)).toEqual(null));
+
       it('should support ISO string without time',
          () => { expect(() => pipe.transform(isoStringWithoutTime)).not.toThrow(); });