Lanyard Spotify - Calculating current time and song length

index.mjs

import "isomorphic-fetch";

const lanyard = await fetch(
  "https://api.lanyard.rest/v1/users/156114103033790464"
).then((r) => r.json());

const spotify = lanyard.data.spotify;

const currentTime = new Date().getTime();

const songLength = spotify.timestamps.end - spotify.timestamps.start;
const timeElapsed = currentTime - spotify.timestamps.start;

function msToMinSeconds(millis) {
  var minutes = Math.floor(millis / 60000);
  var seconds = Number(((millis % 60000) / 1000).toFixed(0));
  return seconds == 60
    ? minutes + 1 + ":00"
    : minutes + ":" + (seconds < 10 ? "0" : "") + seconds;
}

console.log("ms song length:", songLength);
console.log("ms time elapsed:", timeElapsed);

console.log("formatted song length:", msToMinSeconds(songLength));
console.log("formatted time elapsed:", msToMinSeconds(timeElapsed));