Not yet.
Detta skript bör inte installeras direkt. Det är ett bibliotek för andra skript att inkludera med meta-direktivet // @require https://update.greasyfork.org/scripts/2599/184155/GM%202%20port%20-%20Function%20Override%20Helper.js
GreasyMonkey 2.x Beta will break lots scripts, this library has made to help function hooking.
It provides 2.x API exportFunction and cloneInto for 1.x support (Which is just dummy sandbox).
It's well documented in source how to use each functions.
This library is backward compatible.