--- /dev/null
+from _typeshed import SupportsWrite
+from typing import AnyStr, Generic, Tuple
+
+from ..middleware.profiler import *
+
+class MergeStream(Generic[AnyStr]):
+ streams: Tuple[SupportsWrite[AnyStr], ...]
+ def __init__(self, *streams: SupportsWrite[AnyStr]) -> None: ...
+ def write(self, data: AnyStr) -> None: ...