zulip/static/js/tutorial.js

function set_tutorial_status(status, callback) {
    return channel.post({
        url: '/json/users/me/tutorial_status',
        data: {status: JSON.stringify(status)},
        success: callback,
    });
}

exports.initialize = function () {
    if (page_params.needs_tutorial) {
        set_tutorial_status("started");
        narrow.by('is', 'private', {trigger: 'sidebar'});
    }
};

window.tutorial = exports;