StructlogProcessor fails typechecking #146
Description
When typechecking the following code:
from structlog.typing import Processor shared_processors: tuple[Processor, ...] = ( structlog.contextvars.merge_contextvars, structlog.processors.add_log_level, structlog.processors.StackInfoRenderer(), structlog.dev.set_exc_info, structlog.processors.TimeStamper(fmt="iso", utc=True), ) processors: list[Processor] if sys.stderr.isatty(): processors = [ *shared_processors, structlog.dev.ConsoleRenderer(), ] else: processors = [ *shared_processors, structlog.processors.dict_tracebacks, ecs_logging.StructlogFormatter(), ] structlog.configure( processors=processors, logger_factory=structlog.PrintLoggerFactory(), cache_logger_on_first_use=True, )mypy raises the following:
error: List item 2 has incompatible type "StructlogFormatter"; expected "Callable[[Any, str, MutableMapping[str, Any]], Union[Mapping[str, Any], str, bytes, bytearray, tuple[Any, ...]]]" [list-item] ecs_logging.StructlogFormatter(), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ note: "StructlogFormatter.__call__" has type "Callable[[Arg(Any, '_'), Arg(str, 'name'), Arg(dict[str, Any], 'event_dict')], str]" StructlogFormatter is annotated as accepting a dict[str, Any], but it needs to accept any MutableMapping[str, Any]. The code already conforms to this, so addressing this issue wil hopefully only involve updating the type annotation.