Set's implementation is not rigorous.

[reactjser]

class Set {
   ...
}

const s = new Set()
s.add(1)
s.add('1')
console.log(s.size()); // 1
console.log(s.values()); // 1

The 1 is not same as '1'.

[Jeffzholy]

Hi @reactjser yes you are right, but from my perspective the build-from-scratch data structure is for mimicking native Set behaviours and understanding the concept of Set, not for any production use; for sure it can be improved, but not a must, thanks

[reactjser]

Thanks for your reply.