code: function Worker() {
      this.config = JSON.parse(process.env.WORKER_CONFIG);
      if (typeof this.config !== 'object') {
        throw new Error('WORKER_CONFIG is missing');
      }
      process.title = process.variousCluster = this.config.title;
    }
docs: create a new Worker instance
  
  @memberOf global
  
  @constructor
  @this {Worker}