import { head } from "https://deno.land/x/fae@v1.1.1/head.ts";
Returns the first element of the given list or string. In some libraries
this function is named first.
Fae.head(['fi', 'fo', 'fum']); //=> 'fi'
Fae.head([]); //=> undefined
Fae.head('abc'); //=> 'a'
Fae.head(''); //=> ''