/**
 * RUT (Registro Único Tributario) normalizer · Uruguay
 *
 * Reference: DGI (Dirección General Impositiva) · https://www.dgi.gub.uy
 *
 * Format: 12 digits structured as:
 *   - Positions  1–2  (P1)  : registration block (01–22, DGI series).
 *   - Positions  3–8  (S6)  : 6-digit sequence number (cannot be all zeros).
 *   - Positions  9–11 (D3)  : DGI dependency code · usually "001".
 *   - Position  12   (DV)  : modulo-11 check digit.
 *
 * Check digit algorithm (DGI · cross-validated with python-stdnum and the
 * Uruguayan e-Factura reference):
 *   weights = [4, 3, 2, 9, 8, 7, 6, 5, 4, 3, 2]
 *   total   = Σ digit[i] * weight[i]   for i in 0..10
 *   dv      = (-total) mod 11          → digit '0'..'9' (10 is rejected)
 *
 * NOTE: This is structurally distinct from the Chilean RUT (rut-cl) which
 *       uses an 8-digit body + alphanumeric verifier (0–9 or K). Conflating
 *       the two formats is a common source of integration bugs in LATAM
 *       tax-data pipelines.
 */
/**
 * Normalize a Uruguayan RUT to canonical 12-digit form.
 * Accepts inputs like "21.176.325/0017", "211763250017", "UY 211763250017".
 *
 * @throws Error if the input cannot be parsed.
 */
export declare function normalizeRutUY(input: string): string;
/**
 * Compute the canonical RUT verifier digit using DGI's modulo-11 algorithm.
 *
 * The weights [4, 3, 2, 9, 8, 7, 6, 5, 4, 3, 2] are applied left-to-right
 * over the first 11 digits. Total is summed, and the result of `(-total) mod 11`
 * is the check digit (0–9). A computed value of 10 indicates the input is
 * structurally invalid and the function throws.
 */
export declare function computeVerifierDigitUY(firstElevenDigits: string): string;
/**
 * Validate that a string is a syntactically correct Uruguayan RUT with a
 * matching verification digit and DGI structural constraints.
 *
 * Structural checks (per DGI specification):
 *   - 12 digits exactly.
 *   - Positions 1–2 (registration block) in range '01'–'22'.
 *   - Positions 3–8 (sequence) NOT all zeros.
 *   - Positions 9–11 (dependency code) equal '001'.
 *   - Position 12 matches the computed mod-11 check digit.
 */
export declare function isValidRutUY(input: string): boolean;
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