/**
 * ISO Standards Constants
 *
 * International Organization for Standardization (ISO) code lengths
 * and standards used for country codes, language codes, currencies, etc.
 *
 * @module locale/iso
 */
/**
 * ISO code length standards
 */
export declare const ISO_STANDARDS: {
    /**
     * ISO 3166-1 alpha-2 country code length (e.g., "US", "GB", "FR")
     */
    readonly ISO_COUNTRY_CODE_LENGTH: 2;
    /**
     * ISO 3166-1 alpha-3 country code length (e.g., "USA", "GBR", "FRA")
     */
    readonly ISO_COUNTRY_CODE_ALPHA3_LENGTH: 3;
    /**
     * ISO 639-1 language code length (e.g., "en", "fr", "es")
     */
    readonly ISO_LANGUAGE_CODE_LENGTH: 2;
    /**
     * ISO 639-2 language code length (e.g., "eng", "fra", "spa")
     */
    readonly ISO_LANGUAGE_CODE_ALPHA3_LENGTH: 3;
    /**
     * ISO 4217 currency code length (e.g., "USD", "EUR", "GBP")
     */
    readonly ISO_CURRENCY_CODE_LENGTH: 3;
    /**
     * ISO 8601 date format length (YYYY-MM-DD)
     */
    readonly ISO_DATE_LENGTH: 10;
    /**
     * ISO 8601 datetime format length (YYYY-MM-DDTHH:mm:ss.sssZ)
     */
    readonly ISO_DATETIME_LENGTH: 24;
    /**
     * ISO 8601 time format length (HH:mm:ss)
     */
    readonly ISO_TIME_LENGTH: 8;
    /**
     * ISO week date format length (YYYY-Www)
     */
    readonly ISO_WEEK_DATE_LENGTH: 8;
    /**
     * BCP 47 language tag minimum length (e.g., "en")
     */
    readonly BCP47_MIN_LENGTH: 2;
    /**
     * BCP 47 language tag with region (e.g., "en-US")
     */
    readonly BCP47_WITH_REGION_LENGTH: 5;
    /**
     * RFC 5646 maximum language tag length
     */
    readonly RFC5646_MAX_LENGTH: 35;
    /**
     * ISO 3166-1 numeric country code length
     */
    readonly ISO_NUMERIC_COUNTRY_CODE_LENGTH: 3;
    /**
     * ISO 639-3 language code length
     */
    readonly ISO_639_3_LENGTH: 3;
};
/**
 * Type for ISO standard values
 */
export type IsoStandard = (typeof ISO_STANDARDS)[keyof typeof ISO_STANDARDS];
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