bot.js

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

client.on('ready', () => {
  console.log(`Logged in as ${client.user.tag}!`);
});

client.on('message', msg => {
  if (msg.content === '!ping') {
    msg.reply('pong');
  }
});

client.on('message', msg => {
    if (/^!spongecase/i.test(msg.content)) {
        let tokens = msg.content.split(' ')
        tokens.shift();
        let str = tokens.join(' ');


         // here's the dang algorithm
        let counter = 0;
        let spongeArray = [];
        str.split('').forEach((chr) => {
            if (/[A-Za-z]/.test(chr)) {
                if (counter % 2 == 0) {
                    spongeArray.push(chr.toUpperCase());
                } else {
                    spongeArray.push(chr.toLowerCase());
                }
                counter = counter + 1;

            } else {
                spongeArray.push(chr);
            }
        });
        spongeString = spongeArray.join('');
        msg.channel.send(spongeString);
    }
});

client.on('message', async (msg) => {
  if (/^!compliment/i.test(msg.content)) {

    const fetch = require('node-fetch');
    let	response = await fetch('https://complimentr.com/api');
    let data = await response.json();

    await msg.channel.send(data.compliment);
  }
});

client.on('message', async (msg) => {
  if (/^!summon/i.test(msg.content)) {
      // removes command
      let tokens = msg.content.split(' ')
      tokens.shift();
      let str = tokens.join(' ');

      const useragent = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.100 Safari/537.36"
      const fetch = require('node-fetch');
      const jsdom = require('jsdom')
      const { JSDOM } = jsdom;

      let response = await fetch (`https://www.google.com/search?q=${encodeURI(str)}&tbm=isch`, { headers: {"User-Agent": useragent }})
      let html = await response.text()
      let dom = new JSDOM(html)
      let imageurl = JSON.parse(dom.window.document.getElementsByClassName('rg_meta').item(0).innerHTML).ou;

      await msg.channel.send(`**SUMMONED ${str.toUpperCase()}!**\n${imageurl}`);
  }
});

client.on('message', async (msg) => {
  if (/^!(fullwidth|fw)/i.test(msg.content)) {
      // removes command
      let tokens = msg.content.split(' ')
      tokens.shift();
      let str = tokens.join(' ');

      let output = ""
      for (let i = 0; i < str.length; i++) {
          let character = str.charCodeAt(i);
	  if (character == 32) {
              output = output + String.fromCharCode(0x3000);
          } else if (character > 0x20  && character < 0x7F) {
              output = output + String.fromCharCode(0xFF00 - 0x20 + character);
	  } else {
              output = output + String.fromCharCode(character);
      	  }
	  
      }

      await msg.channel.send(output);
  }
});
client.login(process.env.BOT_TOKEN);