groupErrors.js suggestion

groupErrors.js

var chalk = require('chalk');

var groupedErrors = {};

var GroupErrors = {
  GROUP: {
    PropertyReferenceErrors: 'Property Reference Errors',
    PropertyValueCollisions: 'Property Value Collisions',
  },

  flush: function (errorGroup, chalkType) {
    chalkType = chalkType || chalk.bold.red;
    if(errorGroup && groupedErrors[errorGroup] && groupedErrors[errorGroup].length) {
      console.error(chalkType('\n' + errorGroup + ':\n'));
      groupedErrors[errorGroup].forEach(function(err) {
        console.error(chalkType(err.message || err));
      })
      delete groupedErrors[errorGroup];
      console.error('\n\n');
      }
  },