import { InitOptions, TFunction } from 'i18next';
export { InitOptions, TFunction, TOptions, TOptionsBase, default as i18next } from 'i18next';
import { LocaleString } from 'discord-api-types/v10';
import { PathLike } from 'node:fs';
import { O } from '@ruffpuff/ts';

declare const discordLocales: ReadonlySet<"en-US" | "en-GB" | "bg" | "zh-CN" | "zh-TW" | "hr" | "cs" | "da" | "nl" | "fi" | "fr" | "de" | "el" | "hi" | "hu" | "it" | "ja" | "ko" | "lt" | "no" | "pl" | "pt-BR" | "ro" | "ru" | "es-ES" | "sv-SE" | "th" | "tr" | "uk" | "vi">;
declare function isDiscordLocale(lng: string): lng is LocaleString;
declare const loadedLocales: Set<string>;
declare const loadedNamespaces: Set<string>;
declare const loadedPaths: Set<string>;
declare const formatters: Formatter[];
interface Formatter {
    name: string;
    format: (value: any, lng: string | undefined, options: any) => string;
}
declare function addFormatters(...formatters: Formatter[]): void;
declare function init(options: InitOptions & {
    languageDirectory: string;
}): Promise<void>;
declare function load(directory: PathLike): Promise<void>;
declare function getT(locale: string): TFunction;

declare type CustomGet<K extends string, TCustom> = K & {
    __type__: TCustom;
};
declare function T<TCustom = string>(k: string): CustomGet<string, TCustom>;
declare type CustomFunctionGet<K extends string, TArgs, TReturn> = K & {
    __args__: TArgs;
    __return__: TReturn;
};
declare function FT<TArgs, TReturn = string>(k: string): CustomFunctionGet<string, TArgs, TReturn>;

declare module 'i18next' {
    interface TFunction {
        lng: string;
        ns?: string;
        <K extends string, TReturn>(key: CustomGet<K, TReturn>, options?: TOptionsBase | string): TReturn;
        <K extends string, TReturn>(key: CustomGet<K, TReturn>, defaultValue: TReturn, options?: TOptionsBase | string): TReturn;
        <K extends string, TArgs extends O, TReturn>(key: CustomFunctionGet<K, TArgs, TReturn>, options?: TOptions<TArgs>): TReturn;
        <K extends string, TArgs extends O, TReturn>(key: CustomFunctionGet<K, TArgs, TReturn>, defaultValue: TReturn, options?: TOptions<TArgs>): TReturn;
    }
}

export { CustomFunctionGet, CustomGet, FT, Formatter, T, addFormatters, discordLocales, formatters, getT, init, isDiscordLocale, load, loadedLocales, loadedNamespaces, loadedPaths };