How to load Javascript translation through Ajax request

Hi,

I want to load how can I load JS translation through Ajax request. I am using REST API to fetch post with ajax, and I have manually added load_theme_textdomain() to the request to fetch PHP translation.

I tried to do the same to fetch Javascript translation, but it doesn’t work. Is this possible?

My current code:

function ajax_load_script_textdomain(){
    load_script_textdomain('CUSTOM-block-ref-holder', 'custom-blocks', plugin_dir_path(__FILE__) . 'languages');
}

add_action('init', 'ajax_load_script_textdomain');
add_action('rest_api_init', 'ajax_load_script_textdomain');