How could I modify the response of this promise in this js function result before it being sent?

So I have This function

import service from "services/catalogs";

    export const getPaginatedAdminPublications = async (params: URLSearchParams) => {
      params.delete("sort");
      const searchParams = new URLSearchParams(params.get("search"));
      if (searchParams) {
        const publicationId = searchParams.get("id");
        publicationId && params.append("ids[]", publicationId);
        params.delete("search");
        params.delete("id");
      }
      return service.getPaginatedAdminPublications(params);
    };

IT modifies the params and sends it to a function that returns a promise and this promise returns a result

  getPaginatedAdminPublications: (params: URLSearchParams) =>
    HttpService.get<API.PaginatedResponse<API.Publication>>(
      `${CATALOG_SERVICE_URL}/${CATALOG_VERSION_V3}/xxxxx`,
      params
    ),

The result returned is similar to

{
 data: [...],
 metadata: {
 page: 1,
 total_pages: 10
 }
}

But I want it to be

{
 data: [...],
 metadata: {
 page: 1,
 total_pages: 10
 }
pagination: {
 page: 1,
 total_pages: 10
}
}

SO ideally I want to somehow get the results and then still return some kind of promise but with the modified data.
With this pseudocode

export const getPaginatedAdminPublications = async (params: URLSearchParams) => {
  params.delete("sort");
  const searchParams = new URLSearchParams(params.get("search"));
  if (searchParams) {
    const publicationId = searchParams.get("id");
    publicationId && params.append("ids[]", publicationId);
    params.delete("search");
    params.delete("id");
  }
  return service.getPaginatedAdminPublications(params).then(data => {
    return {
        ...data,
        pagination: {
            total: data.data.metadata.total_results,
        }
    }
  });
};

Is something like this possible? DOesnt seem to work

>Solution :

As you already use async function:

export const getPaginatedAdminPublications = async (params: URLSearchParams) => {
      params.delete("sort");
      const searchParams = new URLSearchParams(params.get("search"));
      if (searchParams) {
        const publicationId = searchParams.get("id");
        publicationId && params.append("ids[]", publicationId);
        params.delete("search");
        params.delete("id");
      }
      const data = await service.getPaginatedAdminPublications(params);
      return {...data, pagination: {
            total: data.data.metadata.total_results,
        }}
    };