Make _.isArray consistent with the other isType methods.

Former-commit-id: adcf242ba7692c96fb8f570118acd7fd0a4602da

dist/lodash.js

@@ -618,28 +618,6 @@
       return toString.call(value) == argsClass;
     }
 
-    /**
-     * Checks if `value` is an array.
-     *
-     * @static
-     * @memberOf _
-     * @category Objects
-     * @param {Mixed} value The value to check.
-     * @returns {Boolean} Returns `true`, if the `value` is an array, else `false`.
-     * @example
-     *
-     * (function() { return _.isArray(arguments); })();
-     * // => false
-     *
-     * _.isArray([1, 2, 3]);
-     * // => true
-     */
-    var isArray = nativeIsArray || function(value) {
-      // `instanceof` may cause a memory leak in IE 7 if `value` is a host object
-      // http://ajaxian.com/archives/working-aroung-the-instanceof-memory-leak
-      return value instanceof Array || toString.call(value) == arrayClass;
-    };
-
     /**
      * A fallback implementation of `Object.keys` which produces an array of the
      * given object's own enumerable property names.
@@ -1170,6 +1148,28 @@
       return result;
     }
 
+    /**
+     * Checks if `value` is an array.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {Mixed} value The value to check.
+     * @returns {Boolean} Returns `true`, if the `value` is an array, else `false`.
+     * @example
+     *
+     * (function() { return _.isArray(arguments); })();
+     * // => false
+     *
+     * _.isArray([1, 2, 3]);
+     * // => true
+     */
+    function isArray(value) {
+      // `instanceof` may cause a memory leak in IE 7 if `value` is a host object
+      // http://ajaxian.com/archives/working-aroung-the-instanceof-memory-leak
+      return value instanceof Array || nativeIsArray(value);
+    }
+
     /**
      * Checks if `value` is a boolean value.
      *