import { DataResponseError, DataResponseReturnType } from "../common/types";
import { LANGUAGE_CODE } from "../common/constants";
import { Configuration, EmailName, Message } from '@nylas/core';
import dayjs from 'dayjs';
import 'dayjs/locale/fr';
import 'dayjs/locale/es';
import 'dayjs/locale/de';
import 'dayjs/locale/nl';
import 'dayjs/locale/sv';
import 'dayjs/locale/ja';
import 'dayjs/locale/zh-cn';
import 'dayjs/locale/ko';
export declare function getTimezoneOffset(timezone: string): string;
export declare function sanitize(text: string): any;
export declare function format(first: string, middle: string, last: string): string;
export declare function removeUndefined(obj: any): {
    [key: string]: any;
};
export declare function debug(...args: any[]): void;
export declare function error(...args: any[]): void;
export declare function isTestEnvironment(): boolean;
export declare function uniqueID(): string;
export declare function formatEventName(propKey: string): string;
export declare function formatDateTime(dateTimestamp: number): string;
export declare function formatRecipient(recipient: EmailName): string | undefined;
export declare function formatParticipants(participants: EmailName[], meEmail?: string, messageCount?: number, max?: number): string;
export declare const formatTimeAgo: (date: Date) => string | undefined;
export declare function getLastDayOfMonth(date: Date): Date;
export declare function getFirstDayOfMonth(date: Date): Date;
export declare function getFirstHourOfDay(date: Date): Date;
export declare function isSameDay(date1: Date, date2: Date): boolean;
export declare function normalizeDateInput(dateInput?: Date | string | number | null): Date | undefined;
export declare function isSameDayTimezone(timeslot: Date, comparisonDate: Date, timezoneStr: string): boolean;
export declare function formatBookedEventDate(date: Date, timezoneStr: string, language?: string): string;
export declare function isSameMonth(date1: Date, date2: Date): boolean;
export declare function toTitleCase(str: string): string;
export declare function formatFolderName(folderName: string): string;
export declare function detectHTMLOrPlainText(html: string): "html" | "plain";
export declare function detectIfMessageIsHTML(message: Message): boolean;
export declare function parsePlainTextToHTML(text: string): string;
export declare function htmlToPlainText(html: string): string;
export declare function getStartHourOfDay(date: Date): Date;
export declare function getEndHourOfDay(date: Date): Date;
export declare function get24HourTime(date: Date): string;
export declare function getUserTimezone(): string;
export declare const getEventRecurrence: (recurrence: any) => string | null;
export declare const validateTimeFormatInput: (text: any) => boolean;
export declare const validateExactTimeFormat: (input: any) => boolean;
export declare function roundToNearest15Minutes(time?: dayjs.Dayjs | null): any;
export declare function autocompleteTimeFormat(input: any): string;
export declare function formatTime(time: string): dayjs.Dayjs;
export declare function formatTimezone(date: Date, timezone: string): string;
export declare function convertTo12HourFormat(timeStr: string): string;
export declare function convertTo24HourFormat(timeStr: string): string;
export declare function timeToMinutes(time: any): number;
export declare function minutesToTime(minutes: any): string;
export declare function getBrowser(): "Edge (Chromium)" | "Chrome" | "Safari" | "Firefox" | "Internet Explorer" | "Edge (Legacy)" | "Unknown";
export declare function dataResponse<T = any>(data: T, error?: DataResponseError | null): DataResponseReturnType<T>;
export declare function parsePreviewLink(link: string, config?: Partial<Configuration>): string;
export declare function isNonPrintableKey(event: any): boolean;
export declare function addDaysToCurrentDate(startDate: any, days: any): Date;
export declare function addMinutesToCurrentTime(startDate: any, minutes: any): Date;
export declare function isObject(item: any): any;
export declare function mergeDeep(target: any, source: any): any;
export declare function convertMinutesToHoursAndMinutes(minutes: number): string;
export declare function checkForMissingSlots(slots: string[], host: HTMLElement): void;
export declare function compactStringToUUIDs(compactString: string): string[];
export declare const t: (key: any) => string;
export declare function detectBrowserLanguageCode(): LANGUAGE_CODE | null;
export declare const capitalizeFirstLetter: (str: string) => string;
export declare const translateMonth: (month: string) => string;
export declare const isValidUrl: (url: string) => boolean;
export declare const isValidImage: (url: string) => Promise<unknown>;
interface CustomOptions {
    frequency?: 'daily' | 'weekly' | 'monthly' | 'yearly';
    interval?: number;
    daysOfWeek?: string[];
    monthlySameDate?: boolean;
    end?: {
        type: 'never' | 'on' | 'after';
        date?: string;
        count?: number;
    };
}
export declare function generateRRule(selectedDate: string, option: 'none' | 'daily' | 'weekly' | 'monthly' | 'yearly' | 'custom', endDate?: string, customOptions?: CustomOptions, timezoneStr?: string): string | null;
export declare function getCalendarRange(currentDate: string, viewType: 'week' | 'month' | 'day'): {
    startTime: number;
    endTime: number;
};
export {};