import { Item } from "@terrestrialorigin/core";
import { Event } from "./Event";
import { DerivationMethod } from "./DerivationMethod";
import { Task } from "./Task";
export declare class PrepDate implements Item {
    event: Event;
    derivationMethod: DerivationMethod;
    startDate: Date;
    endDate?: Date;
    tasks: Task[];
    id?: string;
    name?: string;
    description?: string;
    active?: boolean;
    created?: Date;
    modified?: Date;
    parents?: string[];
    constructor(event: Event, derivationMethod: DerivationMethod);
    addTask(task: Task): void;
    toString(): string;
}