index.js

const Discord = require('discord.js');
const client = new Discord.Client();

client.once('ready', () => {
	console.log('Ready!');
});

client.on('message', message => {
	if (message.content === '!react-await') {
		message.react('👍').then(() => message.react('👎'));

		const filter = (reaction, user) => {
			return ['👍', '👎'].includes(reaction.emoji.name) && user.id === message.author.id;
		};

		message.awaitReactions(filter, { max: 1, time: 60000, errors: ['time'] })
			.then(collected => {
				const reaction = collected.first();

				if (reaction.emoji.name === '👍') {
					message.reply('you reacted with a thumbs up.');
				} else {
					message.reply('you reacted with a thumbs down.');
				}
			})
			.catch(collected => {
				console.log(`After a minute, only ${collected.size} out of 4 reacted.`);
				message.reply('you didn\'t react with neither a thumbs up, nor a thumbs down.');
			});
	}
});

client.login('TOKEN_HERE');

realtime.js

const Command = require("../base/Command.js");
// const yahooStockPrices = require("yahoo-stock-prices");
// const { ChartJSNodeCanvas } = require('chartjs-node-canvas');

class Realtime extends Command
{
  constructor (client)
  {
    super(client,
    {
      name: "realtime",
      description: "Gets realtime stock values",
      category: "System",
      usage: "realtime ticker",
      guildOnly: false,
      permLevel: "Bot Owner",
      aliases: []
    });
  }
  async run (message, args, level)
  { // eslint-disable-line no-unused-vars

    message.react('👍').then(() => message.react('👎'));

		const filter = (reaction, user) => {
			return ['👍', '👎'].includes(reaction.emoji.name) && user.id === message.author.id;
		};

		message.awaitReactions(filter, { max: 1, time: 60000, errors: ['time'] })
			.then(collected => {
				const reaction = collected.first();

				if (reaction.emoji.name === '👍') {
					message.reply('you reacted with a thumbs up.');
				} else {
					message.reply('you reacted with a thumbs down.');
				}
			})
			.catch(collected => {
				console.log(`After a minute, only ${collected.size} out of 4 reacted.`);
				message.reply('you didn\'t react with neither a thumbs up, nor a thumbs down.');
			});
 }
}

module.exports = Realtime;