fix(dateFilter): ignore invalid dates

Fixes angular#10640

Author: pkozlowski-opensource

src/ng/filter/filters.js

@@ -459,7 +459,7 @@ function dateFilter($locale) {
       date = new Date(date);
     }
 
-    if (!isDate(date)) {
+    if (!isDate(date) || !isFinite(date.getTime())) {
       return date;
     }
 

test/ng/filter/filtersSpec.js

@@ -247,6 +247,11 @@ describe('filters', function() {
       expect(date('')).toEqual('');
     });
 
+    it('should ignore invalid dates', function() {
+      var invalidDate = new Date('abc');
+      expect(date(invalidDate)).toBe(invalidDate);
+    });
+
     it('should do basic filter', function() {
       expect(date(noon)).toEqual(date(noon, 'mediumDate'));
       expect(date(noon, '')).toEqual(date(noon, 'mediumDate'));