Function isSchemaMismatch

apps/realtime/src/database/preflight.ts:27–39

* Walks the `cause` chain so a SQLSTATE code is found even when drizzle wraps the * driver error (the code commonly lives on the inner `cause`, not the outer throw).

(error: unknown)

 * driver error (the code commonly lives on the inner `cause`, not the outer throw).
 */
function isSchemaMismatch(error: unknown): boolean {
  const seen = new Set<unknown>()
  let current: unknown = error
  while (current && typeof current === 'object' && !seen.has(current)) {
    seen.add(current)
    const code = (current as { code?: unknown }).code
    if (typeof code === 'string' && SCHEMA_MISMATCH_CODES.has(code)) {
      return true
    }
    current = (current as { cause?: unknown }).cause
  }
  return false
}

/**
 * Verifies, before the server accepts traffic, that the deployed image's schema