How to use callback in the form of fully specified class name with method name for JS validation?

https://github.com/…etteForms.js#L130 – the code on the line sanitizes two colons (::) but it doesn't replace slashes (\). The problem is that javascript function name can't contain slashes so effectively it is not possible to use fully specified class name if the class has a namespace.

Example of the problem:

$form->addText('sum', 'Sum')->addRule('\Validators\GeneralValidators::Sum', 'Sum is not correct', array("field1" => $a, "field2" => $b));

I hope I don't miss something obvious.

Proposed fix:

Add after line https://github.com/…etteForms.js#L130 a new line:

op = op.replace('\\', '');

Thanks for help!