import type { BookingOption, ProductOption, SupplierOption } from "./schemas.js";
export declare function nullableString(value: string | null | undefined): string | null;
export declare function nullableNumber(value: string | null | undefined): number | null;
export declare function toLocalDateTimeInput(value: string | null | undefined): string;
export declare function toIsoDateTime(value: string | null | undefined): string | null;
export declare function formatDateTime(value: string | null): string;
export declare function labelById(options: Array<SupplierOption | ProductOption | BookingOption>, id: string | null): string;
export declare function parseJsonRecord(value: string | null | undefined): Record<string, unknown> | null;
export declare function formatSelectionLabel(count: number, singular: string, plural?: string): string;