/**
 * Types for the BCP-47 language tag library
 */
/**
 * Represents the various subtag types in a BCP-47 language tag
 */
export type SubtagType = "language" | "extlang" | "script" | "region" | "variant" | "extension" | "privateuse" | "grandfathered" | "redundant";
/**
 * Represents the scope of a language tag as defined in the registry
 */
export type LanguageScope = "macrolanguage" | "collection" | "special" | "private-use" | "individual";
/**
 * Represents a language tag after parsing
 */
export interface LanguageTag {
    /** The original tag string */
    tag: string;
    /** Primary language subtag */
    language?: string;
    /** Extended language subtags */
    extlang?: string[];
    /** Script subtag */
    script?: string;
    /** Region subtag */
    region?: string;
    /** Variant subtags */
    variants?: string[];
    /** Extension subtags - key is singleton character, value is array of extension subtags */
    extensions?: Record<string, string[]>;
    /** Private use subtags */
    privateuse?: string[];
    /** Whether this is a grandfathered tag */
    grandfathered?: boolean;
    /** Whether this is a private use only tag (starting with 'x-') */
    privateUseOnly?: boolean;
    /** Whether this is a redundant tag */
    redundant?: boolean;
}
/**
 * Validation result for a language tag
 */
export interface ValidationResult {
    /** Whether the tag is well-formed according to BCP-47 syntax rules */
    isWellFormed: boolean;
    /** Whether the tag is valid (well-formed and all subtags exist in registry) */
    isValid: boolean;
    /** Parsed language tag */
    tag?: LanguageTag;
    /** Validation errors, if any */
    errors?: ValidationError[];
    /** Warnings about the tag, if any */
    warnings?: ValidationWarning[];
}
/**
 * Validation error types
 */
export declare enum ValidationErrorType {
    INVALID_SYNTAX = "invalid_syntax",
    UNKNOWN_SUBTAG = "unknown_subtag",
    DUPLICATE_VARIANT = "duplicate_variant",
    DUPLICATE_SINGLETON = "duplicate_singleton",
    INVALID_ORDER = "invalid_order",
    INVALID_PRIVATE_USE = "invalid_private_use",
    UNKNOWN_GRANDFATHERED = "unknown_grandfathered",
    MALFORMED_TAG = "malformed_tag",
    INVALID_EXTENSION = "invalid_extension"
}
/**
 * Validation warning types
 */
export declare enum ValidationWarningType {
    DEPRECATED_SUBTAG = "deprecated_subtag",
    DEPRECATED_TAG = "deprecated_tag",
    REDUNDANT_SCRIPT = "redundant_script",
    LIKELY_SUBTAG_MISMATCH = "likely_subtag_mismatch"
}
/**
 * Represents a validation error for a language tag
 */
export interface ValidationError {
    /** The type of error */
    type: ValidationErrorType;
    /** Human-readable error message */
    message: string;
    /** The subtag or part causing the error, if applicable */
    subtag?: string;
    /** The subtag type, if applicable */
    subtagType?: SubtagType;
    /** Position in the original tag where the error occurred */
    position?: number;
    /** Suggested replacement for the incorrect subtag, if available */
    suggestedReplacement?: string;
}
/**
 * Represents a validation warning for a language tag
 */
export interface ValidationWarning {
    /** The type of warning */
    type: ValidationWarningType;
    /** Human-readable warning message */
    message: string;
    /** The subtag or part causing the warning, if applicable */
    subtag?: string;
    /** The subtag type, if applicable */
    subtagType?: SubtagType;
    /** Suggested replacement, if applicable */
    suggestedReplacement?: string;
}
/**
 * Options for tag validation
 */
export interface ValidationOptions {
    /** Whether to validate against the registry (default: true) */
    checkRegistry?: boolean;
    /** Whether to return warnings for deprecated subtags (default: true) */
    warnOnDeprecated?: boolean;
    /** Whether to return warnings for redundant scripts (default: true) */
    warnOnRedundantScript?: boolean;
}
/**
 * Registry record types
 */
export type RegistryRecordType = "language" | "extlang" | "script" | "region" | "variant" | "grandfathered" | "redundant";
/**
 * Base interface for all registry records
 */
export interface BaseRegistryRecord {
    /** The type of record */
    type: RegistryRecordType;
    /** The date the record was added to the registry */
    added: string;
    /** The date the record was deprecated, if applicable */
    deprecated?: string;
    /** Description of the subtag or tag */
    description: string[];
    /** Comments about the subtag or tag */
    comments?: string[];
}
/**
 * Interface for subtag records in the registry
 */
export interface SubtagRecord extends BaseRegistryRecord {
    /** The subtag value */
    subtag: string;
    /** The preferred value for this subtag, if deprecated */
    preferredValue?: string;
    /** The prefix(es) for this subtag, for variants and extlangs */
    prefix?: string[];
}
/**
 * Interface for language subtag records
 */
export interface LanguageRecord extends SubtagRecord {
    type: "language";
    /** The script that should be suppressed, if any */
    suppressScript?: string;
    /** The macrolanguage this language is a part of, if any */
    macrolanguage?: string;
    /** The scope of this language */
    scope?: LanguageScope;
}
/**
 * Interface for extended language subtag records
 */
export interface ExtlangRecord extends SubtagRecord {
    type: "extlang";
    /** The preferred value (always identical to subtag) */
    preferredValue: string;
    /** The prefix (always a single value, the macrolanguage) */
    prefix: string[];
    /** The macrolanguage this extlang is a part of */
    macrolanguage?: string;
    /** The scope of this extended language */
    scope?: LanguageScope;
}
/**
 * Interface for script subtag records
 */
export interface ScriptRecord extends SubtagRecord {
    type: "script";
}
/**
 * Interface for region subtag records
 */
export interface RegionRecord extends SubtagRecord {
    type: "region";
}
/**
 * Interface for variant subtag records
 */
export interface VariantRecord extends SubtagRecord {
    type: "variant";
    /** The prefix(es) for this variant (required) */
    prefix: string[];
}
/**
 * Interface for grandfathered and redundant tag records
 */
export interface TagRecord extends BaseRegistryRecord {
    type: "grandfathered" | "redundant";
    /** The tag value */
    tag: string;
    /** The preferred value for this tag, if any */
    preferredValue?: string;
}
/**
 * Union type for all registry record types
 */
export type RegistryRecord = LanguageRecord | ExtlangRecord | ScriptRecord | RegionRecord | VariantRecord | TagRecord;