Sample code for updated transformer module

transformer-updated.js

const client = require('client');

class Transformer {
  constructor(name) {
    this._name = name;
    this._client = client.create();
    this._client.on('error', (e) => {
      throw new Error(e.message);
    });
  }
  put(msg) {
    msg += 'Hello from ' + this._name;
    this._client.put(msg);
  }
}

function create(name) {
  return new Transformer(name);
}
module.exports.create = create;