ember-introjs/.node_modules.ember-try/ember-cli-fastboot/fastboot/initializers/error-handler.js

An Ember Component for intro.js

import Ember from 'ember';

/**
 * Initializer to attach an `onError` hook to your app running in fastboot. It catches any run loop
 * exceptions and other errors and prevents the node process from crashing.
 *
 */
export default {
  name: 'error-handler',

  initialize: function(application) {
    if (!Ember.onerror) {
      // if no onerror handler is defined, define one for fastboot environments
      Ember.onerror = function(err) {
        let errorMessage = `There was an error running your app in fastboot. More info about the error: \n ${err.stack || err}`;
        Ember.Logger.error(errorMessage);
      }
    }
  }
};