serialize dates as time interval since reference date

DeepLinkSDK/Categories/NSObject+DPLJSONObject.h

@@ -10,6 +10,7 @@
  - NSDictionary and NSArray will call `DPLJSONObject' on all of their items.
  - Objects in an NSDictionary not keyed by an NSString will be removed.
  - NSNumbers that are NaN or Inf will be represented by a string.
+ - NSDate objects will be represented as `timeIntervalSinceReferenceDate'.
  - JSON incompatible objects will return their description.
  - All NSNulls will be removed because who wants an NSNull.
 

DeepLinkSDK/Categories/NSObject+DPLJSONObject.m

@@ -32,6 +32,15 @@ - (id)DPL_JSONObject {
 @end
 
 
+@implementation NSDate (DPLJSONObject)
+
+- (id)DPL_JSONObject {
+    return @([self timeIntervalSinceReferenceDate]);
+}
+
+@end
+
+
 @implementation NSArray (DPLJSONObject)
 
 - (id)DPL_JSONObject {

Podfile.lock

@@ -16,7 +16,7 @@ DEPENDENCIES:
 
 EXTERNAL SOURCES:
   DeepLinkSDK:
-    :path: "."
+    :path: .
 
 SPEC CHECKSUMS:
   DeepLinkSDK: 82f36ed1bbf8fb549bb0dfb14b21852219c95384
@@ -25,4 +25,4 @@ SPEC CHECKSUMS:
   OCMock: a10ea9f0a6e921651f96f78b6faee95ebc813b92
   Specta: e5ad38f1b2227a23bc63d0b5a3b41c5e628f2851
 
-COCOAPODS: 0.36.4
+COCOAPODS: 0.37.0

Tests/Categories/NSObject_DPLJSONObjectSpec.m

@@ -62,6 +62,12 @@
         expect(obj).to.equal(@{ @"inf": @"inf", @"nan": @"nan" });
     });
 
+    it(@"converts date objects to timeIntervalSinceReferenceDate", ^{
+        NSDate *someDate = [NSDate date];
+        id obj = [someDate DPL_JSONObject];
+        expect([obj doubleValue]).to.equal([someDate timeIntervalSinceReferenceDate]);
+    });
+
     it(@"removes non-string keys from dictionaries", ^{
         NSDictionary *dict = @{ testURL: @"foo", @"bar": @"baz" };
         id obj = [dict DPL_JSONObject];