old_contents: const Utils = require('utils');
  const defaults = require('lodash/defaults');
  
  console.log(Util);
  
  const defaultConfig = {
      baseUrl: '/',
  };
  
  class JSONAPI {
      constructor(apiConfig) {
          Utils.const(this, 'config', defaults({}, apiConfig, defaultConfig));
      }
  
      /**
       * 
       * @param {*} modelConfig 
       */
      define(modelConfig) {
  
      }
  }
  
  module.exports = JSONAPI;
new_contents: const Utils = require('utils');
  const defaults = require('lodash/defaults');
  const defaultConfig = {
      baseUrl: '/',
  };
  
  class JSONAPI {
      constructor(apiConfig) {
          Utils.const(this, 'config', defaults({}, apiConfig, defaultConfig));
      }
  
      /**
       * 
       * @param {*} modelConfig 
       */
      define(modelConfig) {
  
      }
  }
  
  module.exports = JSONAPI;
  
subject: Remove console.log statement causing an error in browser console.