Enable strict typing for config (#108023)

.strict-typing

@@ -122,6 +122,7 @@ homeassistant.components.climate.*
 homeassistant.components.cloud.*
 homeassistant.components.co2signal.*
 homeassistant.components.command_line.*
+homeassistant.components.config.*
 homeassistant.components.configurator.*
 homeassistant.components.counter.*
 homeassistant.components.cover.*

homeassistant/components/config/__init__.py

@@ -1,9 +1,14 @@
 """Component to configure Home Assistant via an API."""
+from __future__ import annotations
+
 import asyncio
+from collections.abc import Callable, Coroutine
 from http import HTTPStatus
 import importlib
 import os
+from typing import Any, Generic, TypeVar, cast
 
+from aiohttp import web
 import voluptuous as vol
 
 from homeassistant.components import frontend
@@ -16,6 +21,9 @@ from homeassistant.helpers.typing import ConfigType
 from homeassistant.setup import ATTR_COMPONENT
 from homeassistant.util.file import write_utf8_file_atomic
 from homeassistant.util.yaml import dump, load_yaml
+from homeassistant.util.yaml.loader import JSON_TYPE
+
+_DataT = TypeVar("_DataT", dict[str, dict[str, Any]], list[dict[str, Any]])
 
 DOMAIN = "config"
 SECTIONS = (
@@ -42,7 +50,7 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
         hass, "config", "config", "hass:cog", require_admin=True
     )
 
-    async def setup_panel(panel_name):
+    async def setup_panel(panel_name: str) -> None:
         """Set up a panel."""
         panel = importlib.import_module(f".{panel_name}", __name__)
 
@@ -63,20 +71,24 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     return True
 
 
-class BaseEditConfigView(HomeAssistantView):
+class BaseEditConfigView(HomeAssistantView, Generic[_DataT]):
     """Configure a Group endpoint."""
 
     def __init__(
         self,
-        component,
+        component: str,
-        config_type,
+        config_type: str,
-        path,
+        path: str,
-        key_schema,
+        key_schema: Callable[[Any], str],
-        data_schema,
+        data_schema: Callable[[dict[str, Any]], Any],
         *,
-        post_write_hook=None,
+        post_write_hook: Callable[[str, str], Coroutine[Any, Any, None]] | None = None,
-        data_validator=None,
+        data_validator: Callable[
-    ):
+            [HomeAssistant, str, dict[str, Any]],
+            Coroutine[Any, Any, dict[str, Any] | None],
+        ]
+        | None = None,
+    ) -> None:
         """Initialize a config view."""
         self.url = f"/api/config/{component}/{config_type}/{{config_key}}"
         self.name = f"api:config:{component}:{config_type}"
@@ -87,26 +99,36 @@ class BaseEditConfigView(HomeAssistantView):
         self.data_validator = data_validator
         self.mutation_lock = asyncio.Lock()
 
-    def _empty_config(self):
+    def _empty_config(self) -> _DataT:
         """Empty config if file not found."""
         raise NotImplementedError
 
-    def _get_value(self, hass, data, config_key):
+    def _get_value(
+        self, hass: HomeAssistant, data: _DataT, config_key: str
+    ) -> dict[str, Any] | None:
         """Get value."""
         raise NotImplementedError
 
-    def _write_value(self, hass, data, config_key, new_value):
+    def _write_value(
+        self,
+        hass: HomeAssistant,
+        data: _DataT,
+        config_key: str,
+        new_value: dict[str, Any],
+    ) -> None:
         """Set value."""
         raise NotImplementedError
 
-    def _delete_value(self, hass, data, config_key):
+    def _delete_value(
+        self, hass: HomeAssistant, data: _DataT, config_key: str
+    ) -> dict[str, Any] | None:
         """Delete value."""
         raise NotImplementedError
 
     @require_admin
-    async def get(self, request, config_key):
+    async def get(self, request: web.Request, config_key: str) -> web.Response:
         """Fetch device specific config."""
-        hass = request.app["hass"]
+        hass: HomeAssistant = request.app["hass"]
         async with self.mutation_lock:
             current = await self.read_config(hass)
             value = self._get_value(hass, current, config_key)
@@ -117,7 +139,7 @@ class BaseEditConfigView(HomeAssistantView):
         return self.json(value)
 
     @require_admin
-    async def post(self, request, config_key):
+    async def post(self, request: web.Request, config_key: str) -> web.Response:
         """Validate config and return results."""
         try:
             data = await request.json()
@@ -129,7 +151,7 @@ class BaseEditConfigView(HomeAssistantView):
         except vol.Invalid as err:
             return self.json_message(f"Key malformed: {err}", HTTPStatus.BAD_REQUEST)
 
-        hass = request.app["hass"]
+        hass: HomeAssistant = request.app["hass"]
 
         try:
             # We just validate, we don't store that data because
@@ -159,9 +181,9 @@ class BaseEditConfigView(HomeAssistantView):
         return self.json({"result": "ok"})
 
     @require_admin
-    async def delete(self, request, config_key):
+    async def delete(self, request: web.Request, config_key: str) -> web.Response:
         """Remove an entry."""
-        hass = request.app["hass"]
+        hass: HomeAssistant = request.app["hass"]
         async with self.mutation_lock:
             current = await self.read_config(hass)
             value = self._get_value(hass, current, config_key)
@@ -178,46 +200,64 @@ class BaseEditConfigView(HomeAssistantView):
 
         return self.json({"result": "ok"})
 
-    async def read_config(self, hass):
+    async def read_config(self, hass: HomeAssistant) -> _DataT:
         """Read the config."""
         current = await hass.async_add_executor_job(_read, hass.config.path(self.path))
         if not current:
             current = self._empty_config()
-        return current
+        return cast(_DataT, current)
 
 
-class EditKeyBasedConfigView(BaseEditConfigView):
+class EditKeyBasedConfigView(BaseEditConfigView[dict[str, dict[str, Any]]]):
     """Configure a list of entries."""
 
-    def _empty_config(self):
+    def _empty_config(self) -> dict[str, Any]:
         """Return an empty config."""
         return {}
 
-    def _get_value(self, hass, data, config_key):
+    def _get_value(
+        self, hass: HomeAssistant, data: dict[str, dict[str, Any]], config_key: str
+    ) -> dict[str, Any] | None:
         """Get value."""
         return data.get(config_key)
 
-    def _write_value(self, hass, data, config_key, new_value):
+    def _write_value(
+        self,
+        hass: HomeAssistant,
+        data: dict[str, dict[str, Any]],
+        config_key: str,
+        new_value: dict[str, Any],
+    ) -> None:
         """Set value."""
         data.setdefault(config_key, {}).update(new_value)
 
-    def _delete_value(self, hass, data, config_key):
+    def _delete_value(
+        self, hass: HomeAssistant, data: dict[str, dict[str, Any]], config_key: str
+    ) -> dict[str, Any]:
         """Delete value."""
         return data.pop(config_key)
 
 
-class EditIdBasedConfigView(BaseEditConfigView):
+class EditIdBasedConfigView(BaseEditConfigView[list[dict[str, Any]]]):
     """Configure key based config entries."""
 
-    def _empty_config(self):
+    def _empty_config(self) -> list[Any]:
         """Return an empty config."""
         return []
 
-    def _get_value(self, hass, data, config_key):
+    def _get_value(
+        self, hass: HomeAssistant, data: list[dict[str, Any]], config_key: str
+    ) -> dict[str, Any] | None:
         """Get value."""
         return next((val for val in data if val.get(CONF_ID) == config_key), None)
 
-    def _write_value(self, hass, data, config_key, new_value):
+    def _write_value(
+        self,
+        hass: HomeAssistant,
+        data: list[dict[str, Any]],
+        config_key: str,
+        new_value: dict[str, Any],
+    ) -> None:
         """Set value."""
         if (value := self._get_value(hass, data, config_key)) is None:
             value = {CONF_ID: config_key}
@@ -225,7 +265,9 @@ class EditIdBasedConfigView(BaseEditConfigView):
 
         value.update(new_value)
 
-    def _delete_value(self, hass, data, config_key):
+    def _delete_value(
+        self, hass: HomeAssistant, data: list[dict[str, Any]], config_key: str
+    ) -> None:
         """Delete value."""
         index = next(
             idx for idx, val in enumerate(data) if val.get(CONF_ID) == config_key
@@ -233,7 +275,7 @@ class EditIdBasedConfigView(BaseEditConfigView):
         data.pop(index)
 
 
-def _read(path):
+def _read(path: str) -> JSON_TYPE | None:
     """Read YAML helper."""
     if not os.path.isfile(path):
         return None
@@ -241,7 +283,7 @@ def _read(path):
     return load_yaml(path)
 
 
-def _write(path, data):
+def _write(path: str, data: dict | list) -> None:
     """Write YAML helper."""
     # Do it before opening file. If dump causes error it will now not
     # truncate the file.

homeassistant/components/config/area_registry.py

@@ -1,14 +1,16 @@
 """HTTP views to interact with the area registry."""
+from __future__ import annotations
+
 from typing import Any
 
 import voluptuous as vol
 
 from homeassistant.components import websocket_api
 from homeassistant.core import HomeAssistant, callback
-from homeassistant.helpers.area_registry import async_get
+from homeassistant.helpers.area_registry import AreaEntry, async_get
 
 
-async def async_setup(hass):
+async def async_setup(hass: HomeAssistant) -> bool:
     """Enable the Area Registry views."""
     websocket_api.async_register_command(hass, websocket_list_areas)
     websocket_api.async_register_command(hass, websocket_create_area)
@@ -126,7 +128,7 @@ def websocket_update_area(
 
 
 @callback
-def _entry_dict(entry):
+def _entry_dict(entry: AreaEntry) -> dict[str, Any]:
     """Convert entry to API format."""
     return {
         "aliases": entry.aliases,

homeassistant/components/config/auth.py

@@ -1,8 +1,11 @@
 """Offer API to configure Home Assistant auth."""
+from __future__ import annotations
+
 from typing import Any
 
 import voluptuous as vol
 
+from homeassistant.auth.models import User
 from homeassistant.components import websocket_api
 from homeassistant.core import HomeAssistant
 
@@ -17,7 +20,7 @@ SCHEMA_WS_DELETE = websocket_api.BASE_COMMAND_MESSAGE_SCHEMA.extend(
 )
 
 
-async def async_setup(hass):
+async def async_setup(hass: HomeAssistant) -> bool:
     """Enable the Home Assistant views."""
     websocket_api.async_register_command(
         hass, WS_TYPE_LIST, websocket_list, SCHEMA_WS_LIST
@@ -151,7 +154,7 @@ async def websocket_update(
     )
 
 
-def _user_info(user):
+def _user_info(user: User) -> dict[str, Any]:
     """Format a user."""
 
     ha_username = next(

homeassistant/components/config/auth_provider_homeassistant.py

@@ -1,4 +1,6 @@
 """Offer API to configure the Home Assistant auth provider."""
+from __future__ import annotations
+
 from typing import Any
 
 import voluptuous as vol
@@ -9,7 +11,7 @@ from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import Unauthorized
 
 
-async def async_setup(hass):
+async def async_setup(hass: HomeAssistant) -> bool:
     """Enable the Home Assistant views."""
     websocket_api.async_register_command(hass, websocket_create)
     websocket_api.async_register_command(hass, websocket_delete)
@@ -115,7 +117,7 @@ async def websocket_change_password(
 ) -> None:
     """Change current user password."""
     if (user := connection.user) is None:
-        connection.send_error(msg["id"], "user_not_found", "User not found")
+        connection.send_error(msg["id"], "user_not_found", "User not found")  # type: ignore[unreachable]
         return
 
     provider = auth_ha.async_get_provider(hass)

homeassistant/components/config/automation.py

@@ -1,4 +1,7 @@
 """Provide configuration end points for Automations."""
+from __future__ import annotations
+
+from typing import Any
 import uuid
 
 from homeassistant.components.automation.config import (
@@ -8,15 +11,16 @@ from homeassistant.components.automation.config import (
 )
 from homeassistant.config import AUTOMATION_CONFIG_PATH
 from homeassistant.const import CONF_ID, SERVICE_RELOAD
+from homeassistant.core import HomeAssistant
 from homeassistant.helpers import config_validation as cv, entity_registry as er
 
 from . import ACTION_DELETE, EditIdBasedConfigView
 
 
-async def async_setup(hass):
+async def async_setup(hass: HomeAssistant) -> bool:
     """Set up the Automation config API."""
 
-    async def hook(action, config_key):
+    async def hook(action: str, config_key: str) -> None:
         """post_write_hook for Config View that reloads automations."""
         await hass.services.async_call(DOMAIN, SERVICE_RELOAD)
 
@@ -49,7 +53,13 @@ async def async_setup(hass):
 class EditAutomationConfigView(EditIdBasedConfigView):
     """Edit automation config."""
 
-    def _write_value(self, hass, data, config_key, new_value):
+    def _write_value(
+        self,
+        hass: HomeAssistant,
+        data: list[dict[str, Any]],
+        config_key: str,
+        new_value: dict[str, Any],
+    ) -> None:
         """Set value."""
         updated_value = {CONF_ID: config_key}
 

homeassistant/components/config/config_entries.py

@@ -1,8 +1,9 @@
 """Http views to control the config manager."""
 from __future__ import annotations
 
+from collections.abc import Callable
 from http import HTTPStatus
-from typing import Any
+from typing import Any, NoReturn
 
 from aiohttp import web
 import aiohttp.web_exceptions
@@ -29,7 +30,7 @@ from homeassistant.loader import (
 )
 
 
-async def async_setup(hass):
+async def async_setup(hass: HomeAssistant) -> bool:
     """Enable the Home Assistant views."""
     hass.http.register_view(ConfigManagerEntryIndexView)
     hass.http.register_view(ConfigManagerEntryResourceView)
@@ -58,7 +59,7 @@ class ConfigManagerEntryIndexView(HomeAssistantView):
     url = "/api/config/config_entries/entry"
     name = "api:config:config_entries:entry"
 
-    async def get(self, request):
+    async def get(self, request: web.Request) -> web.Response:
         """List available config entries."""
         hass: HomeAssistant = request.app["hass"]
         domain = None
@@ -76,12 +77,12 @@ class ConfigManagerEntryResourceView(HomeAssistantView):
     url = "/api/config/config_entries/entry/{entry_id}"
     name = "api:config:config_entries:entry:resource"
 
-    async def delete(self, request, entry_id):
+    async def delete(self, request: web.Request, entry_id: str) -> web.Response:
         """Delete a config entry."""
         if not request["hass_user"].is_admin:
             raise Unauthorized(config_entry_id=entry_id, permission="remove")
 
-        hass = request.app["hass"]
+        hass: HomeAssistant = request.app["hass"]
 
         try:
             result = await hass.config_entries.async_remove(entry_id)
@@ -97,12 +98,12 @@ class ConfigManagerEntryResourceReloadView(HomeAssistantView):
     url = "/api/config/config_entries/entry/{entry_id}/reload"
     name = "api:config:config_entries:entry:resource:reload"
 
-    async def post(self, request, entry_id):
+    async def post(self, request: web.Request, entry_id: str) -> web.Response:
         """Reload a config entry."""
         if not request["hass_user"].is_admin:
             raise Unauthorized(config_entry_id=entry_id, permission="remove")
 
-        hass = request.app["hass"]
+        hass: HomeAssistant = request.app["hass"]
         entry = hass.config_entries.async_get_entry(entry_id)
         if not entry:
             return self.json_message("Invalid entry specified", HTTPStatus.NOT_FOUND)
@@ -116,7 +117,12 @@ class ConfigManagerEntryResourceReloadView(HomeAssistantView):
         return self.json({"require_restart": not entry.state.recoverable})
 
 
-def _prepare_config_flow_result_json(result, prepare_result_json):
+def _prepare_config_flow_result_json(
+    result: data_entry_flow.FlowResult,
+    prepare_result_json: Callable[
+        [data_entry_flow.FlowResult], data_entry_flow.FlowResult
+    ],
+) -> data_entry_flow.FlowResult:
     """Convert result to JSON."""
     if result["type"] != data_entry_flow.FlowResultType.CREATE_ENTRY:
         return prepare_result_json(result)
@@ -134,14 +140,14 @@ class ConfigManagerFlowIndexView(FlowManagerIndexView):
     url = "/api/config/config_entries/flow"
     name = "api:config:config_entries:flow"
 
-    async def get(self, request):
+    async def get(self, request: web.Request) -> NoReturn:
         """Not implemented."""
         raise aiohttp.web_exceptions.HTTPMethodNotAllowed("GET", ["POST"])
 
     @require_admin(
         error=Unauthorized(perm_category=CAT_CONFIG_ENTRIES, permission="add")
     )
-    async def post(self, request):
+    async def post(self, request: web.Request) -> web.Response:
         """Handle a POST request."""
         try:
             return await super().post(request)
@@ -151,7 +157,9 @@ class ConfigManagerFlowIndexView(FlowManagerIndexView):
                 status=HTTPStatus.BAD_REQUEST,
             )
 
-    def _prepare_result_json(self, result):
+    def _prepare_result_json(
+        self, result: data_entry_flow.FlowResult
+    ) -> data_entry_flow.FlowResult:
         """Convert result to JSON."""
         return _prepare_config_flow_result_json(result, super()._prepare_result_json)
 
@@ -165,18 +173,20 @@ class ConfigManagerFlowResourceView(FlowManagerResourceView):
     @require_admin(
         error=Unauthorized(perm_category=CAT_CONFIG_ENTRIES, permission="add")
     )
-    async def get(self, request, /, flow_id):
+    async def get(self, request: web.Request, /, flow_id: str) -> web.Response:
         """Get the current state of a data_entry_flow."""
         return await super().get(request, flow_id)
 
     @require_admin(
         error=Unauthorized(perm_category=CAT_CONFIG_ENTRIES, permission="add")
     )
-    async def post(self, request, flow_id):
+    async def post(self, request: web.Request, flow_id: str) -> web.Response:
         """Handle a POST request."""
         return await super().post(request, flow_id)
 
-    def _prepare_result_json(self, result):
+    def _prepare_result_json(
+        self, result: data_entry_flow.FlowResult
+    ) -> data_entry_flow.FlowResult:
         """Convert result to JSON."""
         return _prepare_config_flow_result_json(result, super()._prepare_result_json)
 
@@ -187,10 +197,10 @@ class ConfigManagerAvailableFlowView(HomeAssistantView):
     url = "/api/config/config_entries/flow_handlers"
     name = "api:config:config_entries:flow_handlers"
 
-    async def get(self, request):
+    async def get(self, request: web.Request) -> web.Response:
         """List available flow handlers."""
-        hass = request.app["hass"]
+        hass: HomeAssistant = request.app["hass"]
-        kwargs = {}
+        kwargs: dict[str, Any] = {}
         if "type" in request.query:
             kwargs["type_filter"] = request.query["type"]
         return self.json(await async_get_config_flows(hass, **kwargs))
@@ -205,7 +215,7 @@ class OptionManagerFlowIndexView(FlowManagerIndexView):
     @require_admin(
         error=Unauthorized(perm_category=CAT_CONFIG_ENTRIES, permission=POLICY_EDIT)
     )
-    async def post(self, request):
+    async def post(self, request: web.Request) -> web.Response:
         """Handle a POST request.
 
         handler in request is entry_id.
@@ -222,14 +232,14 @@ class OptionManagerFlowResourceView(FlowManagerResourceView):
     @require_admin(
         error=Unauthorized(perm_category=CAT_CONFIG_ENTRIES, permission=POLICY_EDIT)
     )
-    async def get(self, request, /, flow_id):
+    async def get(self, request: web.Request, /, flow_id: str) -> web.Response:
         """Get the current state of a data_entry_flow."""
         return await super().get(request, flow_id)
 
     @require_admin(
         error=Unauthorized(perm_category=CAT_CONFIG_ENTRIES, permission=POLICY_EDIT)
     )
-    async def post(self, request, flow_id):
+    async def post(self, request: web.Request, flow_id: str) -> web.Response:
         """Handle a POST request."""
         return await super().post(request, flow_id)
 
@@ -535,7 +545,7 @@ async def async_matching_config_entries(
 
 
 @callback
-def entry_json(entry: config_entries.ConfigEntry) -> dict:
+def entry_json(entry: config_entries.ConfigEntry) -> dict[str, Any]:
     """Return JSON value of a config entry."""
     handler = config_entries.HANDLERS.get(entry.domain)
     # work out if handler has support for options flow

homeassistant/components/config/core.py

@@ -1,7 +1,9 @@
 """Component to interact with Hassbian tools."""
+from __future__ import annotations
 
 from typing import Any
 
+from aiohttp import web
 import voluptuous as vol
 
 from homeassistant.components import websocket_api
@@ -13,7 +15,7 @@ from homeassistant.helpers.aiohttp_client import async_get_clientsession
 from homeassistant.util import location, unit_system
 
 
-async def async_setup(hass):
+async def async_setup(hass: HomeAssistant) -> bool:
     """Set up the Hassbian config."""
     hass.http.register_view(CheckConfigView)
     websocket_api.async_register_command(hass, websocket_update_config)
@@ -28,7 +30,7 @@ class CheckConfigView(HomeAssistantView):
     name = "api:config:core:check_config"
 
     @require_admin
-    async def post(self, request):
+    async def post(self, request: web.Request) -> web.Response:
         """Validate configuration and return results."""
 
         res = await check_config.async_check_ha_config_file(request.app["hass"])

homeassistant/components/config/device_registry.py

@@ -17,7 +17,7 @@ from homeassistant.helpers.device_registry import (
 )
 
 
-async def async_setup(hass):
+async def async_setup(hass: HomeAssistant) -> bool:
     """Enable the Device Registry views."""
 
     websocket_api.async_register_command(hass, websocket_list_devices)

homeassistant/components/config/scene.py

@@ -1,19 +1,22 @@
 """Provide configuration end points for Scenes."""
+from __future__ import annotations
+
+from typing import Any
 import uuid
 
 from homeassistant.components.scene import DOMAIN, PLATFORM_SCHEMA
 from homeassistant.config import SCENE_CONFIG_PATH
 from homeassistant.const import CONF_ID, SERVICE_RELOAD
-from homeassistant.core import DOMAIN as HA_DOMAIN
+from homeassistant.core import DOMAIN as HA_DOMAIN, HomeAssistant
 from homeassistant.helpers import config_validation as cv, entity_registry as er
 
 from . import ACTION_DELETE, EditIdBasedConfigView
 
 
-async def async_setup(hass):
+async def async_setup(hass: HomeAssistant) -> bool:
     """Set up the Scene config API."""
 
-    async def hook(action, config_key):
+    async def hook(action: str, config_key: str) -> None:
         """post_write_hook for Config View that reloads scenes."""
         if action != ACTION_DELETE:
             await hass.services.async_call(DOMAIN, SERVICE_RELOAD)
@@ -44,7 +47,13 @@ async def async_setup(hass):
 class EditSceneConfigView(EditIdBasedConfigView):
     """Edit scene config."""
 
-    def _write_value(self, hass, data, config_key, new_value):
+    def _write_value(
+        self,
+        hass: HomeAssistant,
+        data: list[dict[str, Any]],
+        config_key: str,
+        new_value: dict[str, Any],
+    ) -> None:
         """Set value."""
         updated_value = {CONF_ID: config_key}
         # Iterate through some keys that we want to have ordered in the output

homeassistant/components/config/script.py

@@ -1,4 +1,8 @@
 """Provide configuration end points for scripts."""
+from __future__ import annotations
+
+from typing import Any
+
 from homeassistant.components.script import DOMAIN
 from homeassistant.components.script.config import (
     SCRIPT_ENTITY_SCHEMA,
@@ -6,15 +10,16 @@ from homeassistant.components.script.config import (
 )
 from homeassistant.config import SCRIPT_CONFIG_PATH
 from homeassistant.const import SERVICE_RELOAD
+from homeassistant.core import HomeAssistant
 from homeassistant.helpers import config_validation as cv, entity_registry as er
 
 from . import ACTION_DELETE, EditKeyBasedConfigView
 
 
-async def async_setup(hass):
+async def async_setup(hass: HomeAssistant) -> bool:
     """Set up the script config API."""
 
-    async def hook(action, config_key):
+    async def hook(action: str, config_key: str) -> None:
         """post_write_hook for Config View that reloads scripts."""
         if action != ACTION_DELETE:
             await hass.services.async_call(DOMAIN, SERVICE_RELOAD)
@@ -46,6 +51,12 @@ async def async_setup(hass):
 class EditScriptConfigView(EditKeyBasedConfigView):
     """Edit script config."""
 
-    def _write_value(self, hass, data, config_key, new_value):
+    def _write_value(
+        self,
+        hass: HomeAssistant,
+        data: dict[str, dict[str, Any]],
+        config_key: str,
+        new_value: dict[str, Any],
+    ) -> None:
         """Set value."""
         data[config_key] = new_value

homeassistant/util/yaml/dumper.py

@@ -17,7 +17,7 @@ except ImportError:
     )
 
 
-def dump(_dict: dict) -> str:
+def dump(_dict: dict | list) -> str:
     """Dump YAML to a string and remove null."""
     return yaml.dump(
         _dict,

mypy.ini

@@ -980,6 +980,16 @@ disallow_untyped_defs = true
 warn_return_any = true
 warn_unreachable = true
 
+[mypy-homeassistant.components.config.*]
+check_untyped_defs = true
+disallow_incomplete_defs = true
+disallow_subclassing_any = true
+disallow_untyped_calls = true
+disallow_untyped_decorators = true
+disallow_untyped_defs = true
+warn_return_any = true
+warn_unreachable = true
+
 [mypy-homeassistant.components.configurator.*]
 check_untyped_defs = true
 disallow_incomplete_defs = true