[RL_Quine]

I'm very aware of bcoin.

https://npm.anvaka.com/#/view/2d/bcoin

Many steps of indirection away we find things like this include.

https://github.com/juliangruber/isarray/blob/master/index.js

    module.exports = Array.isArray || function (arr) {
      return toString.call(arr) == '[object Array]';
    };

Javascript is an absolute joke of a language.

[Ajedi32]

I don't really see the problem. On any remotely modern version of Node that's just a noop. On ancient versions of Node its a very useful polyfill.

[judge2020]

Don't forget https://github.com/sindresorhus/number-is-nan/blob/master/in...

[chirss]

For real, it can't even work with regular expressions decently.