from typing import TYPE_CHECKING, Awaitable, Callable, NewType if TYPE_CHECKING: from libp2p.network.stream.net_stream_interface import INetStream # noqa: F401 from libp2p.stream_muxer.abc import IMuxedStream # noqa: F401 TProtocol = NewType("TProtocol", str) StreamHandlerFn = Callable[["INetStream"], Awaitable[None]]