import { NextMiddleware } from 'next/dist/server/web/types';

interface MiddlewareOptions extends I18nConfig {
    /**
     * A function that adds the locale prefix to path name
     */
    format?: (locale: string, path: string) => string;
}
declare function createI18nMiddleware({ languages, defaultLanguage, format, hideLocale, }: MiddlewareOptions): NextMiddleware;

interface I18nConfig {
    /**
     * Supported locale codes.
     *
     * A page tree will be built for each language.
     */
    languages: string[];
    /**
     * Default locale if not specified
     */
    defaultLanguage: string;
    /**
     * Don't show the locale prefix on URL.
     *
     * - `always`: Always hide the prefix
     * - `default-locale`: Only hide the default locale
     * - `never`: Never hide the prefix
     *
     * This API uses `NextResponse.rewrite`.
     *
     * @defaultValue 'never'
     */
    hideLocale?: 'always' | 'default-locale' | 'never';
    /**
     * Used by `loader()`, specify the way to parse i18n file structure.
     *
     * @defaultValue 'dot'
     */
    parser?: 'dot' | 'dir';
}

export { type I18nConfig, createI18nMiddleware };