Make Greasemonkey userscripts settings syncable with Firefox Sync

README.md

What this script does

Makes all Greasemonkey userscripts settings syncable with Firefox Sync.

How to use this script

1. Launch Scratchpad.
2. Copy this script and paste it on Scratchpad.
3. Set the Environtment to Browser on Scratchpad.
4. Execute.

If Scratchpad doesn't have Environtment menu

1. Enter about:config?filter=devtools.chrome.enabled on Location Bar and press Enter.
2. Set devtools.chrome.enabled value to true.

REMEMBER TO BACKUP YOUR PREFERENCES BEFORE RUNNING THIS SCRIPT!
I AM NOT RESPONSIBLE FOR ANY DAMAGE OR DATA LOSS! 💀

gistfile1.js

var prefs = Services.prefs;
var prefArray = prefs.getChildList("greasemonkey.scriptvals", {});
for (var i = 0; i < prefArray.length; i++) {
  prefs.setBoolPref("services.sync.prefs.sync." + prefArray[i], true);
}