Bundaling ES class with static field lead to [Error: Line 5: Unexpected token =]

[luboid]

Hi, I'm using gulp-requirejs:1.4.0 which uses : requirejs: ^2.3.6 Here is JS code that produces [Error: Line 5: Unexpected token =] It runs perfectly fine in a browser

define(['$prcbPlugins', 'js/trnsl'], function ($, trnsl) {
    var actionHandlerUrl = '/api/external-notifications';

    class DAL {
        static contentReport = class ContentReport {
            static get(parameters) {
                return $.prcbExecute({
                    url: actionHandlerUrl + '/contentreport',
                    data: parameters,
                    method: 'get'
                }).asPromise();
            }
        };

        static services = class Services {
            static all() {
                return $.prcbExecute({
                    url: actionHandlerUrl + '/services',
                    method: 'get'
                }).asPromise();
            }
            static get(id) {
                return $.prcbExecute({
                    url: actionHandlerUrl + '/services/:id',
                    data: { id: id },
                    method: 'get'
                }).asPromise();
            }
        };

        static eventTypes = class EventTypes {
            static all() {
                return $.prcbExecute({
                    url: actionHandlerUrl + '/eventtypes',
                    method: 'get'
                }).asPromise();
            }
            static get(id) {
                return $.prcbExecute({
                    url: actionHandlerUrl + '/eventtypes/:id',
                    data: { id: id },
                    method: 'get'
                }).asPromise();
            }
        };

        static channels = class Channels {
            static all() {
                return new Promise((resolve) => {
                    let channels = [
                        { id: 0, title: 'SMS' },
                        { id: 1, title: 'EMail' }
                    ];
                    resolve(channels);
                });
            }

            static providers() {
                return new Promise((resolve) => {
                    let channels = [
                        { id: 0, title: 'ProCredit' },
                        { id: 1, title: 'Teracom' },
                        { id: 2, title: 'Mobica' },
                    ];
                    resolve(channels);
                });
            }

            static enum = class Enum {
                static SMS = 0;
                static Email = 1;
            }
        }

        static statuses = class Statuses {
            static all() {
                return new Promise((resolve) => {
                    let statuses = [
                        { id: 0, title: trnsl.gettext('за формиране') },
                        { id: 1, title: trnsl.gettext('формиран') },
                        { id: 2, title: trnsl.gettext('завършена комуникация') },
                        { id: 3, title: trnsl.gettext('липсващ или невалиден темплейт') },
                        { id: 4, title: trnsl.gettext('грешка при комуникация') },
                        { id: 5, title: trnsl.gettext('твърде много грешки') },
                    ];
                    resolve(statuses);
                });
            }
        }

        static utils = class Utils {
            static toHash(array, id, descr) {
                if (id === undefined) {
                    id = 'id';
                }
                if (descr === undefined) {
                    descr = 'title';
                }

                let o = {};
                array.forEach(i => o[i[id]] = i[descr]);

                return o;
            }
        }
    }

    return DAL;
})

Here is config

module.exports = ({
    baseUrl: "../",
    mainConfigFile: 'default.js', //???
    paths: {
        'services': '../../scripts/services',
        'toastr': 'empty:',
        'resources': '../../scripts/jq/requirejs.plugins/resources',
        '$plugins': '../../scripts/jq/plugins',
        'jquery': 'empty:',
        '$prcbPlugins': 'empty:',
        'knockout': 'empty:',
        'knockout.prcb': 'empty:',
        'durandal/activator': 'empty:',
        'durandal/app': 'empty:',
        'durandal/binder': 'empty:',
        'durandal/composition': 'empty:',
        'durandal/events': 'empty:',
        'durandal/history': 'empty:',
        'durandal/http': 'empty:',
        'durandal/observable': 'empty:',
        'durandal/serializer': 'empty:',
        'plugins/widget': 'empty:',
        'durandal/system': 'empty:',
        'durandal/entrance': 'empty:',
        'durandal/viewEngine': 'empty:',
        'durandal/viewLocator': 'empty:',
        'plugins/dialog': 'empty:',
        'plugins/prcb': 'empty:',
        'plugins/prcbroutes': 'empty:',
        'plugins/prcbmessagelistener': 'empty:',
        'plugins/history': 'empty:',
        'plugins/router': 'empty:',
        'globalize': 'empty:',
        'translations': 'empty:',
        'bctx': 'empty:',
        'underscore': 'empty:',
        '$ui': 'empty:'
    },
    optimize: 'none',
    generateSourceMaps: false,
    preserveLicenseComments: true,
    optimizeCss: "none",
    removeCombined: true,
    name: "js/default",
    exclude: [
        // ако при dependency-тата има някой, който не трябва да бъде включен във файла
        'resources'
    ],
    out: 'app.js',
    wrap: true,
    rawText: {
        'translations': 'define(function () { return {}; });',
        'bctx': 'define(function () { return {}; });'
    }
});

[prantlf]

The parser bundled to r.js is too old. You'll need to upgrade it. See #998.