Magento 2 : Reload customer data – localstorage

When you need to reload customer data for some reason you can simply put key in array below and it will reload that section

        require([
           'Magento_Customer/js/customer-data'
        ], function (customerData) {
            var sections = ['cart','checkout-data'];
            customerData.invalidate(sections);
            customerData.reload(sections, true);
        });