/**
 * Validate that component is empty for specific package type.
 */
declare function validateEmptyByType(type: string, name: string, value: unknown, options?: {
    throws?: boolean | undefined;
} | boolean | undefined): boolean;
/**
 * Validate that a component does not contain injection characters.
 * Shared helper to eliminate boilerplate across per-type validators.
 * @throws {PurlInjectionError} When validation fails and throws is true.
 *   The error includes the specific character code, component name, and
 *   package type so callers can log, alert, or handle injection attempts
 *   at an elevated level.
 */
declare function validateNoInjectionByType(type: string, component: string, value: string | undefined, throws: boolean): boolean;
/**
 * Validate package name component.
 * @throws {PurlError} When validation fails and options.throws is true.
 */
declare function validateName(name: unknown, options?: {
    throws?: boolean | undefined;
} | boolean | undefined): boolean;
/**
 * Validate package namespace component.
 * @throws {PurlError} When validation fails and options.throws is true.
 */
declare function validateNamespace(namespace: unknown, options?: {
    throws?: boolean | undefined;
} | boolean | undefined): boolean;
/**
 * Validate qualifier key format and characters.
 * @throws {PurlError} When validation fails and options.throws is true.
 */
declare function validateQualifierKey(key: string, options?: {
    throws?: boolean | undefined;
} | boolean | undefined): boolean;
/**
 * Validate qualifiers object structure and keys.
 * @throws {PurlError} When validation fails and options.throws is true.
 */
declare function validateQualifiers(qualifiers: unknown, options?: {
    throws?: boolean | undefined;
} | boolean | undefined): boolean;
/**
 * Validate that component is present and not empty.
 * @throws {PurlError} When validation fails and options.throws is true.
 */
declare function validateRequired(name: string, value: unknown, options?: {
    throws?: boolean | undefined;
} | boolean | undefined): boolean;
/**
 * Validate that component is required for specific package type.
 * @throws {PurlError} When validation fails and options.throws is true.
 */
declare function validateRequiredByType(type: string, name: string, value: unknown, options?: {
    throws?: boolean | undefined;
} | boolean | undefined): boolean;
/**
 * Validate that value does not start with a number.
 * @throws {PurlError} When validation fails and options.throws is true.
 */
declare function validateStartsWithoutNumber(name: string, value: string, options?: {
    throws?: boolean | undefined;
} | boolean | undefined): boolean;
/**
 * Validate that value is a string type.
 * @throws {PurlError} When validation fails and options.throws is true.
 */
declare function validateStrings(name: string, value: unknown, options?: {
    throws?: boolean | undefined;
} | boolean | undefined): boolean;
/**
 * Validate subpath component.
 * Rejects command injection characters (|, ;, `, $, <, >, \) while allowing
 * characters that are legitimate in decoded subpaths (?, #, space, etc. which
 * get percent-encoded in the PURL string representation).
 * @throws {PurlInjectionError} When command injection characters found and options.throws is true.
 * @throws {PurlError} When validation fails and options.throws is true.
 */
declare function validateSubpath(subpath: unknown, options?: {
    throws?: boolean | undefined;
} | boolean | undefined): boolean;
/**
 * Validate package type component format and characters.
 * @throws {PurlError} When validation fails and options.throws is true.
 */
declare function validateType(type: unknown, options?: {
    throws?: boolean | undefined;
} | boolean | undefined): boolean;
/**
 * Validate package version component.
 * Rejects command injection characters (|, ;, `, $, <, >, \) while allowing
 * characters legitimate in version strings (!, +, -, ., _, ~, space, %, ?, #).
 * @throws {PurlInjectionError} When command injection characters found and options.throws is true.
 * @throws {PurlError} When validation fails and options.throws is true.
 */
declare function validateVersion(version: unknown, options?: {
    throws?: boolean | undefined;
} | boolean | undefined): boolean;
export { validateEmptyByType, validateName, validateNamespace, validateNoInjectionByType, validateQualifiers, validateQualifierKey, validateRequired, validateRequiredByType, validateStartsWithoutNumber, validateStrings, validateSubpath, validateType, validateVersion, };