longAgo.ts

const dateCreated = () => {
    // How long since created?
    const msPerMinute = 60 * 1000;
    const msPerHour = msPerMinute * 60;
    const msPerDay = msPerHour * 24;
    const msPerMonth = msPerDay * 30;
    const msPerYear = msPerDay * 365;
    const current = new Date();
    const created = new Date(post.createdAt);
    const elapsed = current.getTime() - created.getTime();
    if (elapsed < msPerMinute) {
      return Math.round(elapsed / 1000) + " seconds ago";
    } else if (elapsed < msPerHour) {
      return Math.round(elapsed / msPerMinute) + " minutes ago";
    } else if (elapsed < msPerDay) {
      return Math.round(elapsed / msPerHour) + " hours ago";
    } else if (elapsed < msPerMonth) {
      return Math.round(elapsed / msPerDay) + " days ago";
    } else if (elapsed < msPerYear) {
      return Math.round(elapsed / msPerMonth) + " months ago";
    } else {
      return Math.round(elapsed / msPerYear) + " years ago";
    }
  };