[jeka2]

Сам решил вот так

browserSync.init({
    server: "./",
    cors: true,
    middleware: function (req, res, next) {
        res.setHeader('Access-Control-Allow-Origin', '*');
        next();
    },
    socket: {
        domain: 'localhost:' + portForBrowserSync
    },
    scriptPath: function (path, port, options) {
        return "http://" + options.getIn(['socket', 'domain']) + path;
    }
});