await reply discord.js code example

Example 1: discord bot wait for response

let filter = m => m.author.id === message.author.id
    message.channel.send(`Are you sure to delete all data? \`YES\` / \`NO\``).then(() => {
      message.channel.awaitMessages(filter, {
          max: 1,
          time: 30000,
          errors: ['time']
        })
        .then(message => {
          message = message.first()
          if (message.content.toUpperCase() == 'YES' || message.content.toUpperCase() == 'Y') {
            message.channel.send(`Deleted`)
          } else if (message.content.toUpperCase() == 'NO' || message.content.toUpperCase() == 'N') {
            message.channel.send(`Terminated`)
          } else {
            message.channel.send(`Terminated: Invalid Response`)
          }
        })
        .catch(collected => {
            message.channel.send('Timeout');
        });
    })

Example 2: await message discord.js

message.channel.awaitMessages(m => m.author.id == message.author.id,
                            {max: 1, time: 30000}).then(collected => {
                                    // only accept messages by the user who sent the command
                                    // accept only 1 message, and return the promise after 30000ms = 30s

                                    // first (and, in this case, only) message of the collection
                                    if (collected.first().content.toLowerCase() == 'yes') {
                                            message.reply('Shutting down...');
                                            client.destroy();
                                    }

                                    else
                                            message.reply('Operation canceled.');      
                            }).catch(() => {
                                    message.reply('No answer after 30 seconds, operation canceled.');
                            });