/**
 * User Utility Functions
 *
 * Utilities for user data formatting and manipulation.
 */
/**
 * Format a user's full name from first and last name components.
 *
 * @param firstName - The user's first name
 * @param lastName - The user's last name
 * @returns Formatted full name string
 */
export declare function formatUserName(firstName: string, lastName: string): string;
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