Simplify the _.support.dom check.

dist/lodash.js

@@ -474,7 +474,7 @@
     var reNative = RegExp('^' +
       String(toString)
         .replace(/[.*+?^${}()|[\]\\]/g, '\\$&')
-        .replace(/toString| for [^\]]+/g, '.*?') + '$'
+        .replace(/\b(function)\b.*?(?=\\\()| for .+?(?=\\\])|\btoString\b/g, '$1.*?') + '$'
     );
 
     /** Native method shortcuts */
@@ -620,14 +620,6 @@
      */
     var support = lodash.support = {};
 
-    /**
-     * Detect if the DOM is supported.
-     *
-     * @memberOf _.support
-     * @type boolean
-     */
-    support.dom = !!document && typeof document == 'object' && reNative.test(clearTimeout) && reNative.test(setTimeout);
-
     /**
      * Detect if functions can be decompiled by `Function#toString`
      * (all but PS3 and older Opera mobile browsers & avoided in Windows 8 apps).
@@ -645,6 +637,18 @@
      */
     support.funcNames = typeof Function.name == 'string';
 
+    /**
+     * Detect if the DOM is supported.
+     *
+     * @memberOf _.support
+     * @type boolean
+     */
+    try {
+      support.dom = document.createDocumentFragment().nodeType === 11;
+    } catch(e) {
+      support.dom = false;
+    }
+
     /**
      * By default, the template delimiters used by Lo-Dash are similar to those in
      * embedded Ruby (ERB). Change the following template settings to use alternative