/**
 * Unit tests for error classes
 *
 * Tests cover:
 * - PostgresError base class
 * - Query errors (QueryError, QueryTimeoutError, ConstraintError)
 * - Connection errors (ConnectionError, ConnectionTimeoutError)
 * - Validation errors (ValidationError, ConfigError)
 * - Authentication errors (AuthenticationError)
 * - Protocol errors (ProtocolError)
 * - State errors (StateError, ConflictError)
 * - Resource errors (NotFoundError, AlreadyExistsError, RateLimitError)
 * - Migration errors (MigrationError)
 * - Utility functions (isPostgresError, hasErrorCode, isRetryableError, wrapError, fromHttpResponse)
 */
export {};
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