As long as greasemonkey is available, it won't be possible. If it gets too bad, then a custom jscodeshift script could manually edit the functions in question.

As long as greasemonkey is available, it won't be possible. If it gets too bad, then a custom jscodeshift script could manually edit the functions in question. Ultimately, there isn't a good way to dictate what a user does when you're in a sandbox.