/**
 * Input Validators
 * Validation functions for interactive prompts
 */

/**
 * Validate non-empty string (allows undefined for prompts with default values)
 */
export function validateRequired(fieldName: string) {
  return (value: string | undefined): string | Error | undefined => {
    // Allow undefined (default will be used)
    if (value === undefined) {
      return;
    }

    if (!value.trim()) {
      return `${fieldName} is required`;
    }
  };
}