Helper type to infer stream transformers from a single middleware instance.
InferMiddlewareStreamTransformers: T extends AgentMiddleware<
any,
any,
any,
any,
TStreamTransformers
> [TStreamTransformers] extends [readonly []] readonly [] : TStreamTransformers extends ReadonlyArray<(
) => StreamTransformer<any>> TStreamTransformers : readonly [] : readonly []