Function validate_sync_middleware

src/anthropic/_middleware.py:85–104

(middleware: Iterable[MiddlewareInput])

def validate_sync_middleware(middleware: Iterable[MiddlewareInput]) -> None:
    for entry in middleware:
        if isinstance(entry, Middleware):
            if type(entry).handle is Middleware.handle:
                raise TypeError(
                    f"middleware {_middleware_name(entry)} does not implement `handle()`; "
                    "the synchronous client requires sync-capable middleware"
                )
            if inspect.iscoroutinefunction(type(entry).handle):
                raise TypeError(
                    f"middleware {_middleware_name(entry)} defines `handle()` as an async function; "
                    "the synchronous client requires `handle()` to be a sync function"
                )
        elif not callable(entry):
            raise TypeError(f"middleware {_middleware_name(entry)} is not callable")
        elif _is_async_callable(entry):
            raise TypeError(
                f"middleware {_middleware_name(entry)} is an async function; "
                "the synchronous client requires sync middleware functions"
            )


def validate_async_middleware(middleware: Iterable[MiddlewareInput]) -> None: