/**
 * Validates a Turkish Identification Number (TC Kimlik).
 *
 * A valid Turkish ID must:
 * - Not start with 0
 * - Be exactly 11 digits
 * - Pass the checksum validation (mod 10 checks)
 *
 * @param turkishId - The Turkish ID number to validate
 * @returns true if the ID is valid, false otherwise
 */
export declare function isTCKimlik(turkishId: number): boolean;
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