making NaN check more straightforward, capitalizing to be a more reco…

…gnizable
sindresorhus · Jan 7, 2014 · 8f330eb · 8f330eb
1 parent 1963751
commit 8f330eb
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Showing 2 changed files with 2 additions and 15 deletions.
diff --git a/index.js b/index.js
@@ -22,21 +22,8 @@ module.exports = function(val){
 
   if (val === null) return 'null';
   if (val === undefined) return 'undefined';
-  if (isNaN(val)) return 'nan';
+  if (val !== val) return 'NaN';
   if (val && val.nodeType === 1) return 'element';
 
   return typeof val.valueOf();
 };
-
-
-/**
- * Tests whether the input `val` is `NaN`
- *
- * @param {Mixed} val
- * @return {Boolean}
- * @api private
- */
-
-function isNaN(val) {
-  return typeof val === "number" && val !== +val;
-}
diff --git a/test/tests.js b/test/tests.js
@@ -17,7 +17,7 @@ describe('type', function(){
   });
 
   it('should match NaN', function () {
-    assert('nan' === type(NaN));
+    assert('NaN' === type(NaN));
   });
 
   it('should match strings', function(){