Structural subset of the stripe Node SDK that the adapter uses. Keeping it
structural lets tests inject an in-memory client and keeps the adapter's
compile-time surface independent of SDK version bumps; the real SDK is
loaded lazily at runtime when no client is injected.
Structural subset of the
stripeNode SDK that the adapter uses. Keeping it structural lets tests inject an in-memory client and keeps the adapter's compile-time surface independent of SDK version bumps; the real SDK is loaded lazily at runtime when no client is injected.