declare type LangCode = 'aa' | 'ab' | 'ae' | 'af' | 'ak' | 'am' | 'an' | 'ar' | 'as' | 'av' | 'ay' | 'az' | 'ba' | 'be' | 'bg' | 'bh' | 'bi' | 'bm' | 'bn' | 'bo' | 'br' | 'bs' | 'ca' | 'ce' | 'ch' | 'co' | 'cr' | 'cs' | 'cu' | 'cv' | 'cy' | 'da' | 'de' | 'dv' | 'dz' | 'ee' | 'el' | 'en' | 'eo' | 'es' | 'et' | 'eu' | 'fa' | 'ff' | 'fi' | 'fj' | 'fo' | 'fr' | 'fy' | 'ga' | 'gd' | 'gl' | 'gn' | 'gu' | 'gv' | 'ha' | 'he' | 'hi' | 'ho' | 'hr' | 'ht' | 'hu' | 'hy' | 'hz' | 'ia' | 'id' | 'ie' | 'ig' | 'ii' | 'ik' | 'io' | 'is' | 'it' | 'iu' | 'ja' | 'jv' | 'ka' | 'kg' | 'ki' | 'kj' | 'kk' | 'kl' | 'km' | 'kn' | 'ko' | 'kr' | 'ks' | 'ku' | 'kv' | 'kw' | 'ky' | 'la' | 'lb' | 'lg' | 'li' | 'ln' | 'lo' | 'lt' | 'lu' | 'lv' | 'mg' | 'mh' | 'mi' | 'mk' | 'ml' | 'mn' | 'mr' | 'ms' | 'mt' | 'my' | 'na' | 'nb' | 'nd' | 'ne' | 'ng' | 'nl' | 'nn' | 'no' | 'nr' | 'nv' | 'ny' | 'oc' | 'oj' | 'om' | 'or' | 'os' | 'pa' | 'pi' | 'pl' | 'ps' | 'pt' | 'qu' | 'rm' | 'rn' | 'ro' | 'ru' | 'rw' | 'sa' | 'sc' | 'sd' | 'se' | 'sg' | 'si' | 'sk' | 'sl' | 'sm' | 'sn' | 'so' | 'sq' | 'sr' | 'ss' | 'st' | 'su' | 'sv' | 'sw' | 'ta' | 'te' | 'tg' | 'th' | 'ti' | 'tk' | 'tl' | 'tn' | 'to' | 'tr' | 'ts' | 'tt' | 'tw' | 'ty' | 'ug' | 'uk' | 'ur' | 'uz' | 've' | 'vi' | 'vo' | 'wa' | 'wo' | 'xh' | 'yi' | 'yo' | 'za' | 'zh' | 'zu' | 'af-ZA' | 'am-ET' | 'ar-AE' | 'ar-BH' | 'ar-DZ' | 'ar-EG' | 'ar-IQ' | 'ar-JO' | 'ar-KW' | 'ar-LB' | 'ar-LY' | 'ar-MA' | 'arn-CL' | 'ar-OM' | 'ar-QA' | 'ar-SA' | 'ar-SD' | 'ar-SY' | 'ar-TN' | 'ar-YE' | 'as-IN' | 'az-az' | 'az-Cyrl-AZ' | 'az-Latn-AZ' | 'ba-RU' | 'be-BY' | 'bg-BG' | 'bn-BD' | 'bn-IN' | 'bo-CN' | 'br-FR' | 'bs-Cyrl-BA' | 'bs-Latn-BA' | 'ca-ES' | 'co-FR' | 'cs-CZ' | 'cy-GB' | 'da-DK' | 'de-AT' | 'de-CH' | 'de-DE' | 'de-LI' | 'de-LU' | 'dsb-DE' | 'dv-MV' | 'el-CY' | 'el-GR' | 'en-029' | 'en-AU' | 'en-BZ' | 'en-CA' | 'en-cb' | 'en-GB' | 'en-IE' | 'en-IN' | 'en-JM' | 'en-MT' | 'en-MY' | 'en-NZ' | 'en-PH' | 'en-SG' | 'en-TT' | 'en-US' | 'en-ZA' | 'en-ZW' | 'es-AR' | 'es-BO' | 'es-CL' | 'es-CO' | 'es-CR' | 'es-DO' | 'es-EC' | 'es-ES' | 'es-GT' | 'es-HN' | 'es-MX' | 'es-NI' | 'es-PA' | 'es-PE' | 'es-PR' | 'es-PY' | 'es-SV' | 'es-US' | 'es-UY' | 'es-VE' | 'et-EE' | 'eu-ES' | 'fa-IR' | 'fi-FI' | 'fil-PH' | 'fo-FO' | 'fr-BE' | 'fr-CA' | 'fr-CH' | 'fr-FR' | 'fr-LU' | 'fr-MC' | 'fy-NL' | 'ga-IE' | 'gd-GB' | 'gd-ie' | 'gl-ES' | 'gsw-FR' | 'gu-IN' | 'ha-Latn-NG' | 'he-IL' | 'hi-IN' | 'hr-BA' | 'hr-HR' | 'hsb-DE' | 'hu-HU' | 'hy-AM' | 'id-ID' | 'ig-NG' | 'ii-CN' | 'in-ID' | 'is-IS' | 'it-CH' | 'it-IT' | 'iu-Cans-CA' | 'iu-Latn-CA' | 'iw-IL' | 'ja-JP' | 'ka-GE' | 'kk-KZ' | 'kl-GL' | 'km-KH' | 'kn-IN' | 'kok-IN' | 'ko-KR' | 'ky-KG' | 'lb-LU' | 'lo-LA' | 'lt-LT' | 'lv-LV' | 'mi-NZ' | 'mk-MK' | 'ml-IN' | 'mn-MN' | 'mn-Mong-CN' | 'moh-CA' | 'mr-IN' | 'ms-BN' | 'ms-MY' | 'mt-MT' | 'nb-NO' | 'ne-NP' | 'nl-BE' | 'nl-NL' | 'nn-NO' | 'no-no' | 'nso-ZA' | 'oc-FR' | 'or-IN' | 'pa-IN' | 'pl-PL' | 'prs-AF' | 'ps-AF' | 'pt-BR' | 'pt-PT' | 'qut-GT' | 'quz-BO' | 'quz-EC' | 'quz-PE' | 'rm-CH' | 'ro-mo' | 'ro-RO' | 'ru-mo' | 'ru-RU' | 'rw-RW' | 'sah-RU' | 'sa-IN' | 'se-FI' | 'se-NO' | 'se-SE' | 'si-LK' | 'sk-SK' | 'sl-SI' | 'sma-NO' | 'sma-SE' | 'smj-NO' | 'smj-SE' | 'smn-FI' | 'sms-FI' | 'sq-AL' | 'sr-BA' | 'sr-CS' | 'sr-Cyrl-BA' | 'sr-Cyrl-CS' | 'sr-Cyrl-ME' | 'sr-Cyrl-RS' | 'sr-Latn-BA' | 'sr-Latn-CS' | 'sr-Latn-ME' | 'sr-Latn-RS' | 'sr-ME' | 'sr-RS' | 'sr-sp' | 'sv-FI' | 'sv-SE' | 'sw-KE' | 'syr-SY' | 'ta-IN' | 'te-IN' | 'tg-Cyrl-TJ' | 'th-TH' | 'tk-TM' | 'tlh-QS' | 'tn-ZA' | 'tr-TR' | 'tt-RU' | 'tzm-Latn-DZ' | 'ug-CN' | 'uk-UA' | 'ur-PK' | 'uz-Cyrl-UZ' | 'uz-Latn-UZ' | 'uz-uz' | 'vi-VN' | 'wo-SN' | 'xh-ZA' | 'yo-NG' | 'zh-CN' | 'zh-HK' | 'zh-MO' | 'zh-SG' | 'zh-TW' | 'zu-ZA';
declare type UnmatchedLang = 'x-default';
declare type HrefLang = LangCode | UnmatchedLang;
declare type Languages<T> = {
    [s in HrefLang]?: T;
};
export declare type AlternateLinkDescriptor = {
    title?: string;
    url: string | URL;
};
export declare type AlternateURLs = {
    canonical?: null | string | URL | AlternateLinkDescriptor;
    languages?: Languages<null | string | URL | AlternateLinkDescriptor[]>;
    media?: {
        [media: string]: null | string | URL | AlternateLinkDescriptor[];
    };
    types?: {
        [types: string]: null | string | URL | AlternateLinkDescriptor[];
    };
};
export declare type ResolvedAlternateURLs = {
    canonical: null | AlternateLinkDescriptor;
    languages: null | Languages<AlternateLinkDescriptor[]>;
    media: null | {
        [media: string]: null | AlternateLinkDescriptor[];
    };
    types: null | {
        [types: string]: null | AlternateLinkDescriptor[];
    };
};
export {};