It's part of the culture of frontend programming. In the past I've needed to display a timestamp as something like "n weeks ago" (in a mac app). My first insti

It's part of the culture of frontend programming. In the past I've needed to display a timestamp as something like "n weeks ago" (in a mac app). My first instinct was to write a quick function to do the transform. Then I can tweak it and extend it later to fit my app's needs. However when I asked the web app team at my company to see their code so I could use the same initial set of intervals, it turns out they use a library to do it. The first instinct of a frontend dev seems to be - even for very tiny, single function solutions - download a library.