/**
 * Registry exports
 * This file exports all registry-related functions and data
 */
export * from "./iso639.js";
export * from "./iso3166.js";
export * from "./iso15924.js";
/**
 * Normalizes a BCP-47 language tag to canonical form
 * implementing the canonicalization rules in RFC 5646 Section 4.5
 *
 * @param tag The language tag to normalize
 * @returns The canonical form of the language tag
 */
export declare function normalizeTag(tag: string): string;
/**
 * Canonicalizes a language tag to its canonical form
 *
 * @param tag The language tag to canonicalize
 * @returns The canonicalized tag or null if the tag is invalid
 */
export declare function canonicalizeTag(tag: string): string | null;
/**
 * Validates a tag against the registry
 *
 * @param tag The parsed language tag to validate
 * @returns Validation problems found during registry validation
 */
export declare function validateTagAgainstRegistry(tag: {
    language?: string;
    script?: string;
    region?: string;
    extlang?: string[];
    grandfathered?: boolean;
}): {
    valid: boolean;
    problems: {
        type: string;
        subtag: string;
        subtagType: string;
        message: string;
        suggestedReplacement?: string;
    }[];
};