import { default } from "https://deno.land/x/date_fns@v2.0.0-beta.4/getDaysInMonth/index.js";
Examples
// How many days are in February 2000?
var result = getDaysInMonth(new Date(2000, 1))
//=> 29
// How many days are in February 2000? var result = getDaysInMonth(new Date(2000, 1)) //=> 29