import moment = require('moment');

declare module 'moment' {
    interface MomentZone {
        name: string;
        abbrs: string[];
        untils: number[];
        offsets: number[];
        population: number;

        abbr(timestamp: number): string;
        offset(timestamp: number): number;
        utcOffset(timestamp: number): number;
        parse(timestamp: number): number;
    }

    interface MomentZoneOffset {
        name: string;
        offset: number;
    }

    interface MomentTimezone {
        (): moment.Moment;
        (timezone: string): moment.Moment;
        (date: number, timezone: string): moment.Moment;
        (date: number[], timezone: string): moment.Moment;
        (date: string, timezone: string): moment.Moment;
        (date: string, format: moment.MomentFormatSpecification, timezone: string): moment.Moment;
        (date: string, format: moment.MomentFormatSpecification, strict: boolean, timezone: string): moment.Moment;
        (date: string, format: moment.MomentFormatSpecification, language: string, timezone: string): moment.Moment;
        (date: string, format: moment.MomentFormatSpecification, language: string, strict: boolean, timezone: string): moment.Moment;
        (date: Date, timezone: string): moment.Moment;
        (date: moment.Moment, timezone: string): moment.Moment;
        (date: any, timezone: string): moment.Moment;

        zone(timezone: string): MomentZone | null;

        add(packedZoneString: string): void;
        add(packedZoneString: string[]): void;

        link(packedLinkString: string): void;
        link(packedLinkString: string[]): void;

        load(data: { version: string; links: string[]; zones: string[] }): void;

        names(): string[];
        zonesForCountry<T extends true>(country: string, with_offset: T): T extends true ? MomentZoneOffset[] : never;
        zonesForCountry<T extends false>(country: string, with_offset?: T): T extends false ? string[] : never;
        zonesForCountry(country: string, with_offset?: boolean): MomentZoneOffset[] | string[];
        countries(): string[];
        guess(ignoreCache?: boolean): string;

        setDefault(timezone?: string): Moment;
    }

    interface Moment {
        tz(): string | undefined;
        tz(timezone: string, keepLocalTime?: boolean): moment.Moment;
        zoneAbbr(): string;
        zoneName(): string;
    }

    const tz: MomentTimezone;
}

// require("moment-timezone") === require("moment")
export = moment;