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Deletes the val using it, or whatever url is fed it. Handy for sharing single-use scripts without cluttering people's accounts.

If used in an HTTP val, this will run immediately when anyone forks it, making for a zero-click execution as long as ValTown immediately serves a preview of the forked val.

Add this to your code last and then do not run it, or you will lose your work. Recommend first checking that the val owner isn't you, so that only forked copies will self-destruct.

selfDestruct(import.meta.url)

Returns a promise of successful deletion, though the val would not be around to read it.