import { Component } from "./components/component";
import { VCalendar } from "./components/v-calendar";
import { ConvertToICS } from "./interfaces/convert-to-ics";
export declare function foldLine(line?: string): string;
export declare function unfoldLine(line?: string): string;
export declare function escape(str: string): string;
export declare function unescape(str: string): string;
export declare function filterEmptyLine(lines: string[]): string[];
export declare function quotedStr(str: string): string;
export declare function formatDate(date: Date): string;
export declare function formatTime(date: Date, zoned?: boolean): string;
export declare function formatDateTime(date: Date, zoned?: boolean): string;
export declare function convertToIcs(payload: ConvertToICS): string;
export declare function getCalendarTimezone(calendar: VCalendar): string;
export declare function evaluateComponentTimezone(component: Component, tz: string): void;