code: function Pipeline(hookNames, options) {
    hookNames = hookNames || [];
    options = options || {};
    options = _.merge({
      ui: {
        logInfoColor: 'blue',
        logErrorColor: 'red'
      }
    }, options);
  
    this._ui = options.ui;
  
    this._pipelineHooks = hookNames.reduce(function(pipelineHooks, hookName) {
      pipelineHooks[hookName] = [];
  
      return pipelineHooks;
    }, { didFail: [] });
  
    this.logInfo = chalk[this._ui.logInfoColor];
    this.logError = chalk[this._ui.logErrorColor];
    this._progressBarLib = options.progressBarLib || require('react-deploy-progress');
  }
docs: /* This is a generic implementation of a pipeline with ordered, promise-aware hooks,
  pleasant logging, and failure handling. It should not have any "deployment" domain
  logic or semantics, and is a candidate for extraction to its own npm module.