calendar links

calendar.js

// https://npm.runkit.com/calendar-link

const { google, outlook, office365, yahoo, ics } = require("calendar-link");
 
const event = {
  start: "2021-12-31 18:00:00 +0200",
  duration: [1, "hour"],
  title: "",
  location: "",
  description: "",
};

Object.entries({google,outlook,office365,yahoo/*,ics*/}).map(([k,v]) => `<a href="${v(event)}">${k}</a>`).join(', ');

// correction: just use addevent.com to get a single link for everything.
// (or datumprikker.nl if you're dutch.)