using jQuery.type for typeOf

README.md

@@ -12,9 +12,10 @@ This works in both the Browser and SSJS.
 Notes
 ----
 
-This uses the ["Flanagan / Miller device"](http://groups.google.com/group/nodejs/msg/0670a986a2906aeb) rather than the Crockford's original.
+`typeOf` is taken from `jQuery.type`, which is more accurate than Crockford's original and even simpler
+than the ["Flanagan / Miller device"](http://groups.google.com/group/nodejs/msg/0670a986a2906aeb).
 
-There is [a more specific typeof()](http://rolandog.com/archives/2007/01/18/typeof-a-more-specific-typeof/) implementation worthy of consideration.
+There is [a more specific typeof()](http://rolandog.com/archives/2007/01/18/typeof-a-more-specific-typeof/) implementation also worthy of consideration.
 
 Globals
 ====

lib/remedial.js

@@ -1,18 +1,18 @@
 /*jslint onevar: true, undef: true, nomen: true, eqeqeq: true, plusplus: true, bitwise: true, regexp: true, newcap: true, immed: true */
 "use strict";
 (function () {
-    function typeOf(value) {
-        var s = typeof value;
-        if (s === 'object') {
-            if (value) {
-                if ((/array/i).test(({}).toString.call(value))) {
-                    s = 'array';
+    var classes = "Boolean Number String Function Array Date RegExp Object".split(" "),
+      i,
+      name,
+      class2type = {};
+
+    for (i in classes) {
+      name = classes[i];
+      class2type["[object " + name + "]"] = name.toLowerCase();
     }
-            } else {
-                s = 'null';
-            }
-        }
-        return s;
+
+    function typeOf(obj) {
+      return (null === obj || undefined === obj) ? String(obj) : class2type[Object.prototype.toString.call(obj)] || "object";
     }
 
     function isEmpty(o) {

tests/array-wtf.js

@@ -24,7 +24,7 @@
   // Expected: 3
   // Node/V8/FF: 0
   console.log(typeOf(b));
-  // Expected: Object
+  // Expected: Object (with Flanagan / Miller device or jQuery's type)
   // Node/V8/FF: array (with Crockford's original)
 
 

tests/types.js

@@ -0,0 +1,31 @@
+(function () {
+  require('../lib/remedial');
+  var n = null,
+    u;
+
+  if (
+    'object' === typeOf(Object.create([])) &&
+    'object' === typeOf(Object.create(function () {})) &&
+    'array' === typeOf([]) &&
+    'string' === typeOf('') &&
+    'regexp' === typeOf(/ /) &&
+    'number' === typeOf(0) &&
+    'function' === typeOf(function () {}) &&
+    'function' === typeOf((function () {
+      var a = function () {}; 
+      a.foo = 'bar';
+      return a;
+    }())) &&
+    'boolean' === typeOf(true) &&
+    'boolean' === typeOf(false) &&
+    'date' === typeOf(new Date()) &&
+    'undefined' === typeOf(u) &&
+    'undefined' === typeOf(undefined) &&
+    'null' === typeOf(n) &&
+    'object' === typeOf({})
+      ) {
+    console.log('passed type detections')
+  } else {
+    console.log('failed type detections')
+  }
+}());