How do I publish a Greasemonkey script as a Firefox add-on?

Question

I recently have worked on a script in Greasemonkey and would like to publish it as an add-on for Firefox. What is the easiest way to do this?

Answer 1

Just post your script at userscripts.org¹ OpenUserJS.org (Or one of the other userscripts.org replacements).
Trying to repackage it as an add-on is usually more trouble than it is worth.

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If you really must, you can use the Greasemonkey script compiler to turn your script into an "add-on", and then submit that add-on to Mozilla, via the normal add-on process.

Note that Wladimir's answer is better than the Greasemonkey script compiler.

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¹ Userscripts.org is now long dead.