/**
 * Directory name utilities for attachments
 *
 * Directory format: {id}[-PMID{pmid}]-{uuid-prefix}
 * Examples:
 *   - With PMID: Smith-2024-PMID12345678-123e4567
 *   - Without PMID: Smith-2024-123e4567
 */
interface ReferenceForDirectory {
    id: string;
    PMID?: string;
    custom?: {
        uuid?: string;
    };
}
interface ParsedDirectoryName {
    id: string;
    pmid?: string;
    uuidPrefix: string;
}
/**
 * Extract first 8 characters of UUID as prefix
 */
export declare function extractUuidPrefix(uuid: string): string;
/**
 * Generate directory name for a reference
 */
export declare function generateDirectoryName(ref: ReferenceForDirectory): string;
/**
 * Parse directory name to extract components
 *
 * Returns null if the directory name doesn't match expected format
 */
export declare function parseDirectoryName(name: string): ParsedDirectoryName | null;
export {};
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