Morgan loggly stream custom class

morgan-loggly.js

const {Writable} = require('stream');
const loggly = require('node-loggly-bulk');

class MorganLogglyLoggerStream extends Writable {
  /**
   * Create a new instance of MorganLogglyLogger
   * @param options {Object}
   * @param options.TOKEN {String} your loggly token
   * @param options.SUBDOMAIN {String} your loggly SUBDOMAIN
   */
  constructor(options) {

    // allows use to use any JS object instead of only string or Buffer
    super({objectMode: true});

    this.client = loggly.createClient({
      token: options.TOKEN, // your loggly token
      subdomain: options.SUBDOMAIN, // your loggly subdomain
      tags: ['NodeJS'],
      json: false // we will log only strings
    });

    // make sure write function has proper context (this)
    this._write = this._write.bind(this);
  }

  // override the function from Writable
  _write(message, encoding, callback) {

    this.client.log(message, (err, {response}) => {
      if (err) return callback(err);
      //  remove next if block because it is only here for demonstration
      if (response === 'ok') {
        console.info('Logged a message to loggly!');
      }
      // pass down the callback function to get err or response from client
      return callback(null, response);
    });
  }
}

module.exports = MorganLogglyLoggerStream;

Line 31: Shouldn't it say "allows us to use any[...]", instead of saying "allows use to use any[...]". No?