export type LocaleMessages = Record<string, string>;
export type LocalePack = {
    locale: string;
    messages?: LocaleMessages;
    numberFormat?: Intl.NumberFormatOptions;
    dateFormat?: Intl.DateTimeFormatOptions;
    timeFormat?: Intl.DateTimeFormatOptions;
    fontFallback?: string;
};
export declare function registerLocalePack(pack: LocalePack): void;
export declare function registerLocalePacks(packs: LocalePack[]): void;
export declare function setLocale(locale: string): void;
export declare function getLocale(): string;
export declare function getLocalePack(locale?: string): LocalePack | undefined;
export declare function formatDate(date: Date, options?: Intl.DateTimeFormatOptions, locale?: string): string;
export declare function formatTime(date: Date, options?: Intl.DateTimeFormatOptions, locale?: string): string;
export declare function formatNumber(value: number, options?: Intl.NumberFormatOptions, locale?: string): string;
export declare function formatRelativeTime(value: number, unit: Intl.RelativeTimeFormatUnit, locale?: string): string;
export declare function formatMessage(key: string, locale?: string, fallback?: string): string;
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