Add stubs for flask-cors (#6939)

stubs/Flask-Cors/@tests/stubtest_allowlist.txt

@@ -0,0 +1,2 @@
+# Caused by https://github.com/python/mypy/pull/12040
+flask_cors.core.DEFAULT_OPTIONS

stubs/Flask-Cors/METADATA.toml

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+version = "3.0.*"

stubs/Flask-Cors/flask_cors/__init__.pyi

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+from logging import Logger
+
+from .decorator import cross_origin as cross_origin
+from .extension import CORS as CORS
+from .version import __version__ as __version__
+
+rootlogger: Logger

stubs/Flask-Cors/flask_cors/core.pyi

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+from datetime import timedelta
+from logging import Logger
+from typing import Any, Iterable, Pattern, TypeVar, overload
+from typing_extensions import TypedDict
+
+_IterableT = TypeVar("_IterableT", bound=Iterable[Any])
+_T = TypeVar("_T")
+_App = Any  # flask is not part of typeshed
+_Response = Any  # flask is not part of typeshed
+_MultiDict = Any  # werkzeug is not part of typeshed
+_Options = TypedDict(
+    "_Options",
+    {
+        "resources": dict[str, dict[str, Any]] | list[str] | str | None,
+        "origins": str | list[str] | None,
+        "methods": str | list[str] | None,
+        "expose_headers": str | list[str] | None,
+        "allow_headers": str | list[str] | None,
+        "supports_credentials": bool | None,
+        "max_age": timedelta | int | str | None,
+        "send_wildcard": bool | None,
+        "vary_header": bool | None,
+        "automatic_options": bool | None,
+        "intercept_exceptions": bool | None,
+        "always_send": bool | None,
+    },
+    total=False,
+)
+
+LOG: Logger
+ACL_ORIGIN: str
+ACL_METHODS: str
+ACL_ALLOW_HEADERS: str
+ACL_EXPOSE_HEADERS: str
+ACL_CREDENTIALS: str
+ACL_MAX_AGE: str
+ACL_REQUEST_METHOD: str
+ACL_REQUEST_HEADERS: str
+ALL_METHODS: list[str]
+CONFIG_OPTIONS: list[str]
+FLASK_CORS_EVALUATED: str
+RegexObject = Pattern[str]
+DEFAULT_OPTIONS: _Options
+
+def parse_resources(resources: dict[str, _Options] | Iterable[str] | str | Pattern[str]) -> list[tuple[str, _Options]]: ...
+def get_regexp_pattern(regexp: str | Pattern[str]) -> str: ...
+def get_cors_origins(options: _Options, request_origin: str | None) -> list[str] | None: ...
+def get_allow_headers(options: _Options, acl_request_headers: str | None) -> str | None: ...
+def get_cors_headers(options: _Options, request_headers: dict[str, Any], request_method: str) -> _MultiDict: ...
+def set_cors_headers(resp: _Response, options: _Options) -> _Response: ...
+def probably_regex(maybe_regex: str | Pattern[str]) -> bool: ...
+def re_fix(reg: str) -> str: ...
+def try_match_any(inst: str, patterns: Iterable[str | Pattern[str]]) -> bool: ...
+def try_match(request_origin: str, maybe_regex: str | Pattern[str]) -> bool: ...
+def get_cors_options(appInstance: _App | None, *dicts: _Options) -> _Options: ...
+def get_app_kwarg_dict(appInstance: _App | None = ...) -> _Options: ...
+def flexible_str(obj: object) -> str | None: ...
+def serialize_option(options_dict: _Options, key: str, upper: bool = ...) -> None: ...
+@overload
+def ensure_iterable(inst: str) -> list[str]: ...  # type: ignore
+@overload
+def ensure_iterable(inst: _IterableT) -> _IterableT: ...  # type: ignore
+@overload
+def ensure_iterable(inst: _T) -> list[_T]: ...
+def sanitize_regex_param(param: str | list[str]) -> list[str]: ...
+def serialize_options(opts: _Options) -> _Options: ...

stubs/Flask-Cors/flask_cors/decorator.pyi

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+from datetime import timedelta
+from logging import Logger
+from typing import Any, Callable
+from typing_extensions import ParamSpec
+
+_P = ParamSpec("_P")
+
+LOG: Logger
+
+def cross_origin(
+    *args: Any,
+    origins: str | list[str] | None,
+    methods: str | list[str] | None,
+    expose_headers: str | list[str] | None,
+    allow_headers: str | list[str] | None,
+    supports_credentials: bool | None,
+    max_age: timedelta | int | str | None,
+    send_wildcard: bool | None,
+    vary_header: bool | None,
+    automatic_options: bool | None,
+) -> Callable[[Callable[_P, Any]], Callable[_P, Any]]: ...

stubs/Flask-Cors/flask_cors/extension.pyi

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+from datetime import timedelta
+from logging import Logger
+from typing import Any, Callable, Iterable
+
+_App = Any  # flask is not part of typeshed
+
+LOG: Logger
+
+class CORS:
+    def __init__(
+        self,
+        app: Any | None = ...,
+        *,
+        resources: dict[str, dict[str, Any]] | list[str] | str | None = ...,
+        origins: str | list[str] | None = ...,
+        methods: str | list[str] | None = ...,
+        expose_headers: str | list[str] | None = ...,
+        allow_headers: str | list[str] | None = ...,
+        supports_credentials: bool | None = ...,
+        max_age: timedelta | int | str | None = ...,
+        send_wildcard: bool | None = ...,
+        vary_header: bool | None = ...,
+        **kwargs: Any,
+    ) -> None: ...
+    def init_app(
+        self,
+        app: _App,
+        *,
+        resources: dict[str, dict[str, Any]] | list[str] | str = ...,
+        origins: str | list[str] = ...,
+        methods: str | list[str] = ...,
+        expose_headers: str | list[str] = ...,
+        allow_headers: str | list[str] = ...,
+        supports_credentials: bool = ...,
+        max_age: timedelta | int | str | None = ...,
+        send_wildcard: bool = ...,
+        vary_header: bool = ...,
+        **kwargs: Any,
+    ) -> None: ...
+
+def make_after_request_function(resources: Iterable[tuple[str, dict[str, Any]]]) -> Callable[..., Any]: ...

stubs/Flask-Cors/flask_cors/version.pyi

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+__version__: str