[DV] Help troubleshooting Tampermonkey userscript with right-click dropdown

[twooldcat]

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It seems like some of the constructs that the script depends on like contextmenu and menuitem are now deprecated - that's probably the issue. I tried messing around with it and it seems like the script will always exit on line 24, here:

    if (!("contextMenu" in document.documentElement &&
         "HTMLMenuItemElement" in window)) return;

If I comment out that line of code, the script will successfully add the listener that executes initMenu() when right-clicking. From there, it is a matter of finding out another way to edit the context menu. I hope that gets you going in the right direction.