/**
 * Generates a short URL code from a numeric ID using base62 encoding
 * @param id - The numeric ID to encode
 * @returns The base62 encoded string
 */
export declare function encodeId(id: number): string;
/**
 * Decodes a short URL code back to its numeric ID
 * @param shortCode - The base62 encoded string
 * @returns The decoded numeric ID
 */
export declare function decodeShortUrl(shortCode: string): number;
/**
 * Configuration options for building a short URL
 */
export interface ShortUrlOptions {
    domain: string;
    includeRedirectPath?: boolean;
    redirectPathSegment?: string;
    includeProtocol?: boolean;
    protocol?: string;
    pathSeparator?: string;
}
/**
 * Default options for building a short URL
 */
export declare const DEFAULT_SHORT_URL_OPTIONS: ShortUrlOptions;
/**
 * In-memory storage for URL mappings
 * Maps numeric IDs to their original URLs
 */
export declare const urlStorage: Map<number, string>;
/**
 * Stores a URL mapping
 * @param id - The numeric ID
 * @param originalUrl - The original URL
 */
export declare function storeUrlMapping(id: number, originalUrl: string): void;
/**
 * Retrieves the original URL for a given ID
 * @param id - The numeric ID
 * @returns The original URL if found, undefined otherwise
 */
export declare function getOriginalUrl(id: number): string | undefined;
/**
 * Builds a complete short URL with domain and customizable options
 * @param id - The numeric ID to encode
 * @param options - Configuration options for the short URL
 * @returns The complete short URL
 */
export declare function buildShortUrl(id: number, options?: string | ShortUrlOptions): string;