Function getErrorMessage

packages/utils/src/errors.ts:19–23

(value: unknown, fallback?: string)

 * - Otherwise → `fallback` if provided, or `String(value)`
 */
export function getErrorMessage(value: unknown, fallback?: string): string {
  if (value instanceof Error) return value.message
  if (typeof value === 'string' && value.length > 0) return value
  return fallback ?? String(value)
}

/**
 * Returns PostgreSQL error code (e.g. `23505` for unique_violation) when present on a thrown value.