/**
 * Validation types and utilities for async card interaction validation
 */
/**
 * Result of a validation operation
 *
 * @property valid - Whether the operation is allowed
 * @property error - Optional error message if validation fails
 *
 * @example
 * ```ts
 * const result: ValidationResult = {
 *   valid: true
 * };
 *
 * const errorResult: ValidationResult = {
 *   valid: false,
 *   error: 'Cannot move card to this zone'
 * };
 * ```
 */
export interface ValidationResult {
    /** Whether the operation is allowed */
    valid: boolean;
    /** Optional error message if validation fails */
    error?: string;
}
/**
 * Validator function for drag start operations
 * @param cardId - The ID of the card being dragged
 * @param cardData - Optional additional card data
 * @returns Promise resolving to validation result
 */
export type DragStartValidator = (cardId: string, cardData?: unknown) => Promise<ValidationResult>;
/**
 * Validator function for drag end (drop) operations
 * @param cardId - The ID of the card being dropped
 * @param fromZone - The zone the card is being dragged from
 * @param toZone - The zone the card is being dropped to
 * @param cardData - Optional additional card data
 * @returns Promise resolving to validation result
 */
export type DragEndValidator = (cardId: string, fromZone: string, toZone: string, cardData?: unknown) => Promise<ValidationResult>;
/**
 * Validator function for hand reordering operations
 * @param cardId - The ID of the card being reordered
 * @param fromIndex - The original index of the card
 * @param toIndex - The target index for the card
 * @returns Promise resolving to validation result
 */
export type ReorderValidator = (cardId: string, fromIndex: number, toIndex: number) => Promise<ValidationResult>;
/**
 * Validator function for deck draw operations
 * @returns Promise resolving to validation result
 */
export type DrawValidator = () => Promise<ValidationResult>;
/**
 * Helper function to create a successful validation result
 */
export declare const createValidResult: () => ValidationResult;
/**
 * Helper function to create an invalid validation result with error message
 */
export declare const createInvalidResult: (error: string) => ValidationResult;