import { ImmutableDate } from './ImmutableDate';
/**
 * Transforms a timestamp number to a Date (getter).
 *
 * @param this - The object containing the property to transform
 * @param propName - The name of the property to transform
 * @returns A function that transforms the timestamp property into a Date
 */
export declare function timestampToDateTransform<T extends {
    [k in K]?: number | null | undefined;
}, K extends keyof T>(propName: K): (this: T) => ImmutableDate | Extract<T[K], undefined | null>;