Merge pull request #1 from jadejs/undefined

Support stringifying 'undefined'

Author: ForbesLindesay

index.js

@@ -5,7 +5,10 @@ function stringify(obj) {
   if (obj instanceof Date) {
     return 'new Date(' + stringify(obj.toISOString()) + ')';
   }
+  if (obj === undefined) {
+    return 'undefined';
+  }
   return JSON.stringify(obj)
              .replace(/\u2028/g, '\\u2028')
              .replace(/\u2029/g, '\\u2029');
-}
+}

test/index.js

@@ -7,5 +7,7 @@ assert(stringify('foo') === '"foo"');
 assert(stringify('foo\u2028bar\u2029baz') === '"foo\\u2028bar\\u2029baz"');
 assert(stringify(new Date('2014-12-19T03:42:00.000Z')) === 'new Date("2014-12-19T03:42:00.000Z")');
 assert(stringify({foo: 'bar'}) === '{"foo":"bar"}');
+assert(stringify(undefined) === 'undefined');
+assert(stringify(null) === 'null');
 
 console.log('tests passed');