Getting all the headers in response from the Rest APIs

[Shruti3004]

The Access-Control-Expose-Headers response header indicates which headers can be exposed as part of the response by listing their names.
By default, only the 6 CORS-safelisted response headers are exposed:
Cache-Control, Content-Language, Content-Type, Expires, Last-Modified, Pragma
If we want clients to be able to access other headers, you have to list them using the Access-Control-Expose-Headers header.

We need to set Access-Control-Expose-Headers in our backend to expose our custom response headers.
Taken from Access-Control-Expose-Headers

Therefore, we have to code your backend to set Access-Control-Expose-Headers such that it returns:
Access-Control-Expose-Headers: x-total-pages