discord.js on message

discord.js

client.on("message", (msg) => {
  const isDM = msg.channel.type == 'dm'

  if (isDM) {
      // add users in db if never seen.
      if (msg.author.id !== client.user.id) {
        db.get("SELECT id from users where id=?", [msg.author.id], (err, row)=> {
          if (err) console.error(err.message)
          if (row.length == 0) {
            db.run("INSERT INTO users (id, name) values (?, ?)", msg.author.id, msg.author.username)
          }
        })
      }

      // add new messages informations into the database
      const words = msg.content.trim().split(/ +/g)

      db.run("INSERT INTO logs (author_id, recipient_id, words_count, chars_count) values (?,?,?,?)", 
      msg.author.id, 
      msg.channel.recipient.id,
      words.length, 
      msg.content.length)
      
      console.log(`${msg.author.username} to ${msg.channel.recipient.username} wrote ${words.length} words`)
  }

})