Mini Shell

import typing as t
import warnings


class JSONMixin:
    def __init__(self, *args: t.Any, **kwargs: t.Any) -> None:
        warnings.warn(
            "'JSONMixin' is deprecated and will be removed in Werkzeug"
            " 2.1. 'Request' now includes the functionality directly.",
            DeprecationWarning,
            stacklevel=2,
        )
        super().__init__(*args, **kwargs)