schon/storefront/composables/auth/useLogout.ts

import {useAppConfig} from "~/composables/config";

export function useLogout() {
  const userStore = useUserStore();
  const router = useRouter();

  const { COOKIES_REFRESH_TOKEN_KEY, COOKIES_ACCESS_TOKEN_KEY } = useAppConfig();

  const cookieRefresh = useCookie(
      COOKIES_REFRESH_TOKEN_KEY,
      {
        default: () => '',
        path: '/'
      }
  );
  const cookieAccess = useCookie(
      COOKIES_ACCESS_TOKEN_KEY,
      {
        default: () => '',
        path: '/'
      }
  );

  async function logout() {
    userStore.setUser(null);

    cookieRefresh.value = '';
    cookieAccess.value = '';

    await router.push({path: '/'});
  }

  return {
    logout
  };
}