Currently the Restconsumer localization adds the current language to all endpoints throught the localizePath method.
This leads to 404 errors when used on multilingual website using domain and not url as language detection.
Ex: the session token path is rewritten as /de/session/token, which does not exists on such a domain.
Install a drupal website with domain and language module enabled.
Add a language and add a domain.
Specify the URL language detection part as domain: /admin/config/regional/language/detection/url
Modify the localizePath method of the Worker.js to use drupalSettings.path.pathPrefix variable instead of the current language to check if a prefix should be added to the endpoint (see provided file)
Check for any other incompatibilities
Needs review
3.0
Code
I'm proposing a different way of handling it by using Drupal.url. This way we can get rid of any flags and rely only on core Drupal functionality. Does this also work for your use case?