/**
 * Repository data validators.
 *
 * This module provides validation utilities for repository operations,
 * primarily for validating external data before processing (e.g., snapshot imports).
 *
 * These validators return Result types (ValidationResult) instead of throwing errors.
 * For parameter validation at repository API boundaries, use ValidationError with Zod schemas.
 */
import type { Logger } from '../../logger/logger.types.js';
import type { ValidationResult } from '../../utils/validation/types.js';
import type { SerializableSnapshot } from '../types/index.js';
/**
 * Serializable snapshot validation error code.
 */
type SerializableSnapshotValidationErrorCode = 'SERIALIZABLE_SNAPSHOT_VALIDATION_ERROR';
/**
 * Validate a SerializableSnapshot object.
 *
 * Validates the structure of snapshot data for import operations,
 * ensuring version compatibility and data integrity.
 *
 * Validation steps:
 * 1. Check data is a plain object
 * 2. Validate version field (semver format: x.y.z)
 * 3. Validate serializedAt field (ISO-8601 UTC timestamp)
 * 4. Validate prototypes array using {@link validateNormalizedPrototypeArray}
 *
 * @param data - Data to validate
 * @param logger - Optional logger for validation events
 * @returns Validation result with typed data or error details
 *
 * @example
 * ```ts
 * const result = validateSerializableSnapshot(data, logger);
 * if (result.ok) {
 *   // data is SerializableSnapshot
 *   console.log(`Version: ${result.data.version}`);
 *   console.log(`Prototypes: ${result.data.prototypes.length}`);
 * } else {
 *   console.error(`Invalid snapshot: ${result.message}`);
 * }
 * ```
 */
export declare function validateSerializableSnapshot(data: unknown, logger?: Logger): ValidationResult<SerializableSnapshot, SerializableSnapshotValidationErrorCode>;
export {};
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