Does MooTools provide some undocumented function on String, "test"? I'm not referring to String.prototype.test. I ask because I have my own script which implements String.test(o) to return true if o is a String and false if not, and it fails if I include MooTools on the same page. Specifically, the error is identical to calling "someString".test() with no argument, "TypeError: a is undefined."
Actually, it appears that MooTools writes all of its prototype methods to the native constructor, because String.contains exists only with MooTools loaded, etc. That is absurd. Thomas
