2421 should be a warning

it's not setup tag, because any change (it is inactive) does not help performance, in fact the opposite
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Thorin-Oakenpants 2019-04-22 11:50:01 +00:00 committed by GitHub
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@ -1206,7 +1206,7 @@ user_pref("dom.vibrator.enabled", false);
* [6] https://rh0dev.github.io/blog/2017/the-return-of-the-jit/ ***/
user_pref("javascript.options.asmjs", false);
/* 2421: disable Ion and baseline JIT to help harden JS against exploits
* [SETUP-PERF] If false, causes the odd site issue and there is also a performance loss
* [WARNING] If false, causes the odd site issue and there is also a performance loss
* [1] https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0817 ***/
// user_pref("javascript.options.ion", false);
// user_pref("javascript.options.baselinejit", false);