Refresh token realization

_base.ts

const GET = async(navigation: any, url: string, sec: boolean = true, baseURL: boolean = true) => {
    const headers = await getHeaders(sec);
    const params = { method: "GET", headers };
    const requestURL = baseURL ? `${BASE_URL}${url}` : url;
    const result = await makeRequest(requestURL, params, navigation);
    return result;
};

const makeRequest = async(url: string, params: any, navigation: any) => {
    try {
        const resp: any = await timeout(1000 * 30, fetch(url, params));
        const isNotRefresh = url.indexOf("token/refresh") < 0;
        if (resp.status === 401) { // unauthorized
            let refreshResp;
            if (isNotRefresh) refreshResp = await refresh(navigation);
            if (refreshResp === true && isNotRefresh) { // rt is not expired
                params.headers = await getHeaders(true); // update request params
                const prevRequest: any = await timeout(1000 * 30, fetch(url, params)); // getting response
                if (checkResponse(prevRequest)) return prevRequest.json(); // setting response
                return prevRequest;
            } else { // rt is expired => clearing old datas
                await secure.clear();
                await firebase.messaging().deleteToken(); 
                await navigation.navigate(`${ScreenPath.auth}`);
                return null;
            }
        } else if (resp.status === 404) { // not found
            return null;
        }
        if (checkResponse(resp)) return resp.json();
        return resp;
    } catch (err) {
        showError(err);
        return null;
    }
};

Hope it helps