<t: :R> tag in cooldowns section. about guide HOT 3 CLOSED

const expirationTime = timestamps.get(interaction.user.id) + cooldownAmount;
// ...
const expiredTimestamp = Math.round(expirationTime / 1000);

const { Collection, Interaction } = require('discord.js')

module.exports =
{
  /**
   * Checks if the user is in timeout to re-execute a certain command, if yes it returns true, otherwise it returns false.
   * @param { Interaction } interaction
   * @param { object } command
   * @returns { Boolean }
   */
  hasCooldown: async (interaction, command) =>
  {
    if(!command.cooldown) return false
    const { cooldowns } = interaction.client

    if (!cooldowns.has(command.data.name)) cooldowns.set(command.data.name, new Collection())

    const now = Date.now()
    const timestamps = cooldowns.get(command.data.name)
    const cooldownAmmount = command.cooldown * 1000

    if (timestamps.has(interaction.user.id))
    {
      const expirationTime = timestamps.get(interaction.user.id) + cooldownAmmount

      if (now < expirationTime)
      {
        const expiredTimestamp = Math.round(expirationTime / 1000)
        return !!interaction.reply({ content: `Please wait, you are on a cooldown for \`${command.data.name}\`. You can use it again in <t:${expiredTimestamp}:R>.`, ephemeral: true })
      }
    }

    timestamps.set(interaction.user.id, now)
    setTimeout(() => timestamps.delete(interaction.user.id), cooldownAmmount)
    return false
  }
}

if (now < expirationTime)
{
  const expiredTimestamp = Math.round(expirationTime / 1000)
  interaction.reply({ content: `Please wait, you are on a cooldown for \`${command.data.name}\`. You can use it again in <t:${expiredTimestamp}:R>`, ephemeral: true })
  setTimeout(() => { interaction.deleteReply() }, expirationTime - now)
  return true
}