uploaded-time-ago/index.js

It calculates the time just like Facebook whenever a new post or anything is uploaded and this function is used to calculate the time distance from the current time.

/**
 * Facebook post Time Ago function
 */
const timeAgo = (timestamp) => {
  // Check if the timestamp is valid
  if (!timestamp || isNaN(timestamp) || typeof timestamp !== "number") {
    return "Invalid timestamp";
  }

  const SECOND = 1000;
  const MINUTE = 60 * SECOND;
  const HOUR = 60 * MINUTE;
  const DAY = 24 * HOUR;
  const WEEK = 7 * DAY;
  const MONTH = 30 * DAY;
  const YEAR = 365 * DAY;

  const timeElapsed = Date.now() - timestamp;

  if (timeElapsed < 0) {
    return "Timestamp is in the future";
  }

  if (timeElapsed < MINUTE) {
    return `${Math.floor(timeElapsed / SECOND)} seconds ago`;
  } else if (timeElapsed < HOUR) {
    return `${Math.floor(timeElapsed / MINUTE)} minutes ago`;
  } else if (timeElapsed < DAY) {
    return `${Math.floor(timeElapsed / HOUR)} hours ago`;
  } else if (timeElapsed < WEEK) {
    return `${Math.floor(timeElapsed / DAY)} days ago`;
  } else if (timeElapsed < MONTH) {
    return `${Math.floor(timeElapsed / WEEK)} weeks ago`;
  } else if (timeElapsed < YEAR) {
    return `${Math.floor(timeElapsed / MONTH)} months ago`;
  } else {
    return `${Math.floor(timeElapsed / YEAR)} years ago`;
  }
};

export default timeAgo;