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    I just found I didn't search for "unminify" stackoverflow.com/questions/822119/…, although I still think this is valid as neither of the answers works to "undo the variable renaming" Commented Sep 7, 2009 at 7:03
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    You are using the wrong term in your question. What you are really interested in reversing "obfuscation" (identifier renaming). THus you've gotten a bunch of answers correct for your question but not for your apparant purpose. Commented Sep 7, 2009 at 8:29
  • If there's no sourcemap, the best you can do is beautify it. If the variable names were all shortened, there's no way to... unshorten them without having the source. (and if you had the source, there's no point in deobfuscating it.) Commented Nov 30, 2015 at 19:34
  • Possible duplicate of How to deminify javascript Commented Feb 23, 2016 at 22:56