@cyclic.sh/session-store/src/util.js

Express middleware that stores sessions in DynamoDB tables for Cyclic apps.

/**
 * Transforms a date t seconds epoch.
 * @param  {Date} date The date to be converted.
 * @return {Integer}      Representation of the date in seconds epoch.
 */
function toSecondsEpoch (date) {
  if (!(date instanceof Date)) {
    throw new Error(`${date} is not a Date!`)
  }
  return Math.floor(date.getTime() / 1000)
}

/**
 * Logs messages when debug is enabled.
 * @param  {String} message Message to be debugged.
 * @param  {Object} object  Optional param that will be strigified.
 */
function debug (message, object) {
  if (process.env.DYNAMODB_STORE_DEBUG) {
    const argument = object || ''

    console.log(
      `${new Date().toString()} - DYNAMODB_STORE: ${message}`,
      typeof argument === 'object' ? JSON.stringify(argument) : argument
    )
  }
}

/**
 * Checks if an expiration date has passed.
 * @param {number} expiresOn Optiona expiration date on second epoch.
 */
function isExpired (expiresOn) {
  return !expiresOn || expiresOn <= toSecondsEpoch(new Date())
}

module.exports = {
  toSecondsEpoch,
  debug,
  isExpired
}