@prisma-next/sql-errors

SQL-normalized driver error types for Prisma Next.

Package Classification

• Domain: sql
• Layer: core
• Plane: shared

Overview

This package provides normalized error classes for SQL driver errors. These errors are shared across both migration-plane and runtime-plane code, allowing consistent error handling regardless of which driver is being used.

Purpose

Normalize driver-specific errors (e.g., Postgres pg errors) into well-typed, SQL-family error classes that can be handled deterministically by migration runners, CLI commands, and other downstream systems.

Responsibilities

• Error Types: Define SqlQueryError and SqlConnectionError classes
• Type Predicates: Provide .is() methods for safe error checking without instanceof
• Stack Trace Preservation: Preserve original error stack traces via ES2022 Error.cause

Error Classes

SqlQueryError

Represents query-related failures:

• Syntax errors
• Constraint violations
• Permission errors
• Other SQL execution errors

Fields:

• kind: 'sql_query' (discriminator)
• sqlState: Postgres SQLSTATE code (e.g., '23505')
• constraint: Constraint name if applicable
• table: Table name if applicable
• column: Column name if applicable
• detail: Additional detail from database

SqlConnectionError

Represents connection-related failures:

• Connection timeouts
• Connection resets
• Connection refused
• Other connectivity issues

Fields:

• kind: 'sql_connection' (discriminator)
• transient: Whether retry might succeed

Usage

import { SqlQueryError, SqlConnectionError } from '@prisma-next/sql-errors';

// Check error type using type predicate (recommended)
if (SqlQueryError.is(error)) {
  console.log('SQLSTATE:', error.sqlState);
  console.log('Constraint:', error.constraint);
  console.log('Original stack:', error.cause?.stack);
}

// Create normalized error with original error preserved
const normalized = new SqlQueryError('Query failed', {
  cause: originalError,
  sqlState: '23505',
  constraint: 'user_email_unique',
});

Architecture

This package is in the shared plane, meaning it can be imported by both migration-plane and runtime-plane packages. This allows drivers (runtime plane) and migration runners (migration plane) to use the same error types.

Related Documentation

• docs/architecture docs/subsystems/5. Adapters & Targets.md: Driver architecture
• docs/Error Handling.md: Error handling patterns