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flatten.pyi
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flatten.pyi
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from typing import TypeVar, overload
from returns.context import (
RequiresContext,
RequiresContextFutureResult,
RequiresContextIOResult,
RequiresContextResult,
)
from returns.future import Future, FutureResult
from returns.io import IO, IOResult
from returns.maybe import Maybe
from returns.result import Result
_EnvType = TypeVar('_EnvType')
_ValueType = TypeVar('_ValueType')
_ErrorType = TypeVar('_ErrorType')
@overload
def _flatten(container: IO[IO[_ValueType]]) -> IO[_ValueType]:
...
@overload
def _flatten(container: Maybe[Maybe[_ValueType]]) -> Maybe[_ValueType]:
...
@overload
def _flatten(
container: Result[Result[_ValueType, _ErrorType], _ErrorType],
) -> Result[_ValueType, _ErrorType]:
...
@overload
def _flatten(
container: IOResult[IOResult[_ValueType, _ErrorType], _ErrorType],
) -> IOResult[_ValueType, _ErrorType]:
...
@overload
def _flatten(
container: RequiresContext[
_EnvType, RequiresContext[_EnvType, _ValueType],
],
) -> RequiresContext[_EnvType, _ValueType]:
...
@overload
def _flatten(
container: RequiresContextResult[
_EnvType,
RequiresContextResult[_EnvType, _ValueType, _ErrorType],
_ErrorType,
],
) -> RequiresContextResult[_EnvType, _ValueType, _ErrorType]:
...
@overload
def _flatten(
container: RequiresContextIOResult[
_EnvType,
RequiresContextIOResult[_EnvType, _ValueType, _ErrorType],
_ErrorType,
],
) -> RequiresContextIOResult[_EnvType, _ValueType, _ErrorType]:
...
@overload
def _flatten(
container: RequiresContextFutureResult[
_EnvType,
RequiresContextFutureResult[_EnvType, _ValueType, _ErrorType],
_ErrorType,
],
) -> RequiresContextFutureResult[_EnvType, _ValueType, _ErrorType]:
...
@overload
def _flatten(container: Future[Future[_ValueType]]) -> Future[_ValueType]:
...
@overload
def _flatten(
container: FutureResult[FutureResult[_ValueType, _ErrorType], _ErrorType],
) -> FutureResult[_ValueType, _ErrorType]:
...