An example of confirmation with Discord.js

prompt.js

const responses = await message.channel.awaitMessages(msg => msg.author.id === message.author.id, {
	max: 1,
	time: 10000
});

if (!responses || responses.size !== 1) {
  // timed out
}
const response = responses.first();

if (/^y(?:e(?:a|s)?)?$/i.test(response!.content)) {
  // recieved "yes"
} else {
  // didn't recieve "yes"
}