/**
 * Metadata Extractor Registry
 *
 * Centralized registry for all metadata extractor implementations with metadata
 * and discovery capabilities. Follows the BaseRegistry pattern.
 */
import { BaseRegistry } from "../../core/infrastructure/index.js";
import type { MetadataExtractor, MetadataExtractorConfig, MetadataExtractorMetadata, MetadataExtractorType } from "../../types/index.js";
/**
 * Metadata Extractor Registry
 *
 * Manages registration and discovery of all metadata extractor implementations.
 * Extends BaseRegistry for consistent lifecycle management.
 */
export declare class MetadataExtractorRegistry extends BaseRegistry<MetadataExtractor, MetadataExtractorMetadata> {
    private static instance;
    private aliasMap;
    private constructor();
    /**
     * Get singleton instance
     */
    static getInstance(): MetadataExtractorRegistry;
    /**
     * Reset singleton (for testing)
     */
    static resetInstance(): void;
    /**
     * Register all built-in extractors
     */
    protected registerAll(): Promise<void>;
    /**
     * Create extractor instance wrapper
     */
    private createExtractorInstance;
    /**
     * Register an extractor with aliases
     */
    registerExtractor(type: MetadataExtractorType, factory: () => Promise<MetadataExtractor>, metadata: MetadataExtractorMetadata): void;
    /**
     * Resolve type from alias
     */
    resolveType(nameOrAlias: string): MetadataExtractorType;
    /**
     * Get an extractor by type or alias
     */
    getExtractor(typeOrAlias: string): Promise<MetadataExtractor>;
    /**
     * Get list of available extractor types
     */
    getAvailableExtractors(): MetadataExtractorType[];
    /**
     * Get metadata for a specific extractor
     */
    getExtractorMetadata(typeOrAlias: string): MetadataExtractorMetadata | undefined;
    /**
     * Get all aliases for a type
     */
    getAliasesForType(type: MetadataExtractorType): string[];
    /**
     * Get all registered aliases
     */
    getAllAliases(): Map<string, MetadataExtractorType>;
    /**
     * Check if a type or alias exists
     */
    hasExtractor(typeOrAlias: string): boolean;
    /**
     * Get extractors by use case
     */
    getExtractorsByUseCase(useCase: string): MetadataExtractorType[];
    /**
     * Get extractors that can produce a specific extraction type
     */
    getExtractorsByExtractionType(extractionType: string): MetadataExtractorType[];
    /**
     * Get default configuration for an extractor
     */
    getDefaultConfig(typeOrAlias: string): Partial<MetadataExtractorConfig> | undefined;
    /**
     * Clear the registry (also clears aliases)
     */
    clear(): void;
}
/**
 * Global metadata extractor registry singleton
 */
export declare const metadataExtractorRegistry: MetadataExtractorRegistry;
/**
 * Convenience function to get available extractors
 */
export declare function getAvailableExtractors(): MetadataExtractorType[];
/**
 * Convenience function to get extractor by type
 */
export declare function getExtractor(typeOrAlias: string): Promise<MetadataExtractor>;
/**
 * Convenience function to get extractor metadata
 */
export declare function getRegisteredExtractorMetadata(typeOrAlias: string): MetadataExtractorMetadata | undefined;