Server side headers are not applied

import { createTRPCProxyClient, httpBatchLink } from '@trpc/client';
import type { AppRouter } from '../../../api/src/trpc';
import { get } from 'js-cookie';

export const client = createTRPCProxyClient<AppRouter>({
    links: [
        httpBatchLink({
            url: 'http://localhost:8000/trpc',
            headers: () => {
                return {
                    authorization: get('authToken')
                };
            }
        })
    ]
});