Angular decorator to send exceptions to google analytics when $q error

decorating.js

import _ from 'lodash';
export default function decorating(AnalyticsProvider, $provide) {
    'use strict';

    AnalyticsProvider.setAccount('UA-64741631-1');

    $provide.decorator('$q', function($delegate) {
        var defer = $delegate.defer;
        $delegate.defer = function() {
            var deferred = defer();

            deferred.promise.state = deferred.state = 'pending';

            deferred.promise.then(function() {
                deferred.promise.state = deferred.state = 'fulfilled';
            }, function(e) {
 
                if (angular.isString(e)) {
                    e = { message: e };
                }
                _.defaults(e, { status: 'ERROR', show: true });
                
                if (e.show) {
                    window.ga('send', 'exception', {
                        'exDescription': e.message,
                        'exFatal': false
                    });
                }
                deferred.promise.state = deferred.state = 'rejected';
            });

            return deferred;
        };
        return $delegate;
    });

}
routing.$inject = ['AnalyticsProvider', '$provide'];