How to use the jellyfin-apiclient/dist/apiclient function in jellyfin-apiclient

return async (dispatch) => {
        const normalizedAddress = normalizeAddress(serverAddress);
        setApiClient(new ApiClient(null, normalizedAddress || '-', "Jellyfin WebNG", "0.0.1", "WebNG", "WebNG", ""));

        try {
            await getApiClient().getPublicSystemInfo()
            dispatch(connectSuccessful({ serverAddress }));
            return true
        } catch (err) {
            dispatch(connectFailed({ serverAddress }));
            return false
        }
    };
}

connect: function (address) {
        this.apiClient = new ApiClient(null, address, "Jellyfin WebNG", '0.0.1', 'WebNG', 'WebNG', '')
    }
}

import ApiClient from 'jellyfin-apiclient/dist/apiclient';

let apiClient = new ApiClient(null, '-', "Jellyfin WebNG", "0.0.1", "WebNG", "WebNG", "")

export function getApiClient(): ApiClient {
  return apiClient
}

export function setApiClient(client: ApiClient) {
  apiClient = client;
}