/**
 * Spam detection helper for contact form submissions.
 * Detects artificially generated names using linguistic heuristics.
 */
/**
 * Checks if a name appears to be spam/generated.
 *
 * Spam characteristics detected:
 * - Exactly one space between two parts
 * - Both parts contain only letters (no numbers/symbols)
 * - Both parts are unusually long (15+ characters each)
 * - Low vowel ratio (< 35%) - real words typically have higher vowel density
 * - High uppercase ratio (> 30%) - indicating random capitalization
 *
 * @param name - The name to validate
 * @returns true if the name appears to be spam, false otherwise
 *
 * @example
 * isSpamName("FalDxivcRyvFRbMUOedpn KAtCqqnzliZxRoThK") // true
 * isSpamName("John Doe") // false
 */
export declare function isSpamName(name: string): boolean;