/**
 * Utilities for handling PO/POT plural forms and context
 */
export interface PluralRule {
    nplurals: number;
    plural: string;
    description: string;
}
export interface ContextualTranslation {
    context: string;
    msgid: string;
    msgstr: string[];
    msgid_plural?: string;
}
/**
 * Comprehensive plural forms for different languages
 * Based on GNU gettext documentation and Unicode CLDR
 */
export declare const PLURAL_FORMS: Record<string, PluralRule>;
/**
 * Get plural form rule for a language
 */
export declare function getPluralRule(language: string): PluralRule;
/**
 * Format plural forms header for PO files
 */
export declare function formatPluralFormsHeader(language: string): string;
/**
 * Validate plural form expression
 */
export declare function validatePluralExpression(expression: string, nplurals: number): boolean;
/**
 * Evaluate plural expression for a given number
 * WARNING: This uses eval() and should only be used with trusted input
 */
export declare function evaluatePluralExpression(expression: string, n: number): number;
/**
 * Parse context from a translation key
 */
export declare function parseContext(key: string): {
    context: string;
    msgid: string;
};
/**
 * Create context key from context and msgid
 */
export declare function createContextKey(context: string, msgid: string): string;
/**
 * Parse plural form index from a translation key
 */
export declare function parsePluralIndex(key: string): {
    baseKey: string;
    pluralIndex?: number;
};
/**
 * Create plural form key
 */
export declare function createPluralKey(baseKey: string, index: number): string;
/**
 * Validate context string
 */
export declare function validateContext(context: string): boolean;
/**
 * Normalize language code for plural form lookup
 */
export declare function normalizeLanguageCode(language: string): string;
/**
 * Get all supported languages with plural forms
 */
export declare function getSupportedLanguages(): string[];
/**
 * Check if a language has complex plural forms (more than 2 forms)
 */
export declare function hasComplexPlurals(language: string): boolean;
/**
 * Generate sample plural forms for a language
 */
export declare function generateSamplePlurals(language: string, msgid: string, msgidPlural?: string): string[];
/**
 * Validate that all required plural forms are present
 */
export declare function validatePluralForms(translations: Record<string, string>, language: string): {
    isValid: boolean;
    missing: string[];
    extra: string[];
};