import * as O from "fp-ts/lib/Option";
export declare function renderIfNoFetchOrFetchDefined<F, R>(fetch: Record<string, F> | undefined, name: string, renderer: (fetch: F | undefined) => O.Option<R>): O.Option<R>;
export declare function writeEmptyStringOrNull(s: string | null | undefined, emptyStringInsteadOfNull: boolean): string | null;
export declare function filterDouble(value: string): number | null;
export declare function formatDateTime(date: Date): string;
export declare function formatDateTimeIsoString(date: string): string;
export declare function formatDate(date: Date): string;
export declare function isEmpty(obj: object): boolean;