interface PurlObject {
    name: string;
    namespace?: string | undefined;
    qualifiers?: Record<string, string> | undefined;
    subpath?: string | undefined;
    type?: string | undefined;
    version?: string | undefined;
}
/**
 * Validate OPAM package URL.
 * OPAM packages must not have a namespace.
 */
export declare function validate(purl: PurlObject, throws: boolean): boolean;
export {};