import { CustomFieldData, IApi, IApiPayload } from "@etsoo/appscript";
export declare namespace ApiHelpers {
    /**
     * Check if data is CustomFieldData
     * @param data Data
     * @returns Result
     */
    function isCustomFieldData(data: any): data is CustomFieldData;
    /**
     * Post get attributes
     * @param api API
     * @param flag API flag
     * @param ids Category IDs
     * @param payload Payload
     * @returns Result
     */
    function postGetAttributes(api: IApi, flag: string, ids: number[], payload?: IApiPayload<CustomFieldData[]>): Promise<CustomFieldData[] | undefined>;
}