import type { ExistsResult, ExistsOptions } from './npm.js';
interface PurlObject {
    name: string;
    namespace?: string | undefined;
    qualifiers?: Record<string, string> | undefined;
    subpath?: string | undefined;
    type?: string | undefined;
    version?: string | undefined;
}
/**
 * Check if a Maven package exists in Maven Central.
 *
 * Queries search.maven.org API to verify package existence and retrieve
 * the latest version. Maven packages are identified by group ID (namespace)
 * and artifact ID (name).
 *
 * @param name - Artifact ID (e.g., 'commons-lang3')
 * @param namespace - Group ID (e.g., 'org.apache.commons')
 * @param version - Optional version to validate (e.g., '3.12.0')
 * @param options - Optional configuration including cache
 * @returns Promise resolving to existence result with latest version
 *
 * @example
 * ```typescript
 * // Check if package exists
 * const result = await mavenExists('commons-lang3', 'org.apache.commons')
 * // -> { exists: true, latestVersion: '3.12.0' }
 *
 * // Validate specific version
 * const result = await mavenExists('commons-lang3', 'org.apache.commons', '3.12.0')
 * // -> { exists: true, latestVersion: '3.12.0' }
 *
 * // Non-existent package
 * const result = await mavenExists('fake-artifact', 'com.example')
 * // -> { exists: false, error: 'Package not found' }
 * ```
 */
export declare function mavenExists(name: string, namespace?: string, version?: string, options?: ExistsOptions): Promise<ExistsResult>;
/**
 * Validate Maven package URL.
 * Maven packages require a namespace (groupId). Name and namespace must not
 * contain injection characters.
 */
export declare function validate(purl: PurlObject, throws: boolean): boolean;
export {};