[Babooster]

http://www.haneycodes.net/npm-left-pad-have-we-forgotten-how...

is a nice article on the subject of left-pad. If you can't implement a left-pad in less than 5 minutes yourself, you don't know how to code.

[Ajedi32]

Just because you _can_ spend 5 minutes re-inventing the wheel in every project you write, doesn't mean you _should_.