I am NOT writing a database connector unless you add an additional three months to your projects expectations.

I am NOT writing an LDAP connector.

I am NOT writing code to execute shell processes safely.

And I'm sure as hell not writing an XML parser just so I can say I did it without libraries.

JS devs that import libraries for every stupid thing (lpad comes to mind) are bad programmers, but libraries are useful and have their place.

And if my boss doesn't want me using those libraries, they need to specify that in advance or there needs to be a company policy to that effect. Otherwise, I'm solving the problem my way since that's what I'm getting paid to do.