/**
 * RUT (Rol Único Tributario) normalizer · Chile
 *
 * Reference: Servicio de Impuestos Internos · https://www.sii.cl
 * Format: ########-X where X is a checksum digit (0-9 or K).
 *
 * Canonical form: digits-only body + "-" + uppercase verifier.
 * Strips dots, spaces, leading zeros.
 */
/**
 * Normalize a Chilean RUT to canonical "########-X" form.
 * Accepts inputs like "76.086.428-5", "760864285", "76086428-K".
 *
 * @throws Error if the input cannot be parsed.
 */
export declare function normalizeRutCL(input: string): string;
/**
 * Compute the canonical RUT verifier digit using the modulo-11 algorithm
 * defined by the Servicio de Impuestos Internos.
 */
export declare function computeVerifierDigitCL(body: string): string;
/**
 * Validate that a string is a syntactically correct Chilean RUT with a
 * matching verifier digit.
 */
export declare function isValidRutCL(input: string): boolean;
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