/**
 * GS1 Global Location Number — Peppol scheme `0088`.
 *
 * Format: 13 digits, the last being the check digit.
 * Check: GS1 mod10 — weights 3 and 1 alternating from the right of the 12-digit
 * body, check digit = (10 - sum mod 10) mod 10.
 *
 * Both halves are the code list's `validation-rules` line verbatim
 * ("RegEx: [0-9]{13}" + "Check Digit: mod10 (weights 1, 3)"). Nothing is added:
 * a checksum answers "is this value well-formed", never "does this location
 * exist" — the distinction GPR-965 was built on.
 */
export declare function isValidGs1Gln(input: string): boolean;
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