From 198ade5e2be84580d4d7918789efe85b44bcafa5 Mon Sep 17 00:00:00 2001
From: Marc Mueller <30130371+cdce8p@users.noreply.github.com>
Date: Fri, 7 Jan 2022 00:43:54 +0100
Subject: [PATCH] Fix typing `TrackTemplateResultListener` [helpers.event]
 (#63541)

---
 homeassistant/components/websocket_api/commands.py |  4 +++-
 homeassistant/helpers/event.py                     | 14 +++++++-------
 2 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/homeassistant/components/websocket_api/commands.py b/homeassistant/components/websocket_api/commands.py
index c9857f14d03..cbf84cd002e 100644
--- a/homeassistant/components/websocket_api/commands.py
+++ b/homeassistant/components/websocket_api/commands.py
@@ -354,7 +354,9 @@ async def handle_render_template(
             return
 
     @callback
-    def _template_listener(event: Event, updates: list[TrackTemplateResult]) -> None:
+    def _template_listener(
+        event: Event | None, updates: list[TrackTemplateResult]
+    ) -> None:
         nonlocal info
         track_template_result = updates.pop()
         result = track_template_result.result
diff --git a/homeassistant/helpers/event.py b/homeassistant/helpers/event.py
index 289d3321a41..24b0b66bc97 100644
--- a/homeassistant/helpers/event.py
+++ b/homeassistant/helpers/event.py
@@ -9,7 +9,7 @@ from datetime import datetime, timedelta
 import functools as ft
 import logging
 import time
-from typing import Any, Callable, List, cast
+from typing import Any, Callable, List, Union, cast
 
 import attr
 
@@ -533,7 +533,7 @@ class _TrackStateChangeFiltered:
         """Handle removal / refresh of tracker init."""
         self.hass = hass
         self._action = action
-        self._listeners: dict[str, Callable] = {}
+        self._listeners: dict[str, Callable[[], None]] = {}
         self._last_track_states: TrackStates = track_states
 
     @callback
@@ -721,7 +721,7 @@ def async_track_template(
 
     @callback
     def _template_changed_listener(
-        event: Event, updates: list[TrackTemplateResult]
+        event: Event | None, updates: list[TrackTemplateResult]
     ) -> None:
         """Check if condition is correct and run action."""
         track_result = updates.pop()
@@ -769,7 +769,7 @@ class _TrackTemplateResultInfo:
         self,
         hass: HomeAssistant,
         track_templates: Sequence[TrackTemplate],
-        action: Callable,
+        action: Callable[[Event | None, list[TrackTemplateResult]], None],
         has_super_template: bool = False,
     ) -> None:
         """Handle removal / refresh of tracker init."""
@@ -786,7 +786,7 @@ class _TrackTemplateResultInfo:
         self._rate_limit = KeyedRateLimit(hass)
         self._info: dict[Template, RenderInfo] = {}
         self._track_state_changes: _TrackStateChangeFiltered | None = None
-        self._time_listeners: dict[Template, Callable] = {}
+        self._time_listeners: dict[Template, Callable[[], None]] = {}
 
     def async_setup(self, raise_on_template_error: bool, strict: bool = False) -> None:
         """Activation of template tracking."""
@@ -986,7 +986,7 @@ class _TrackTemplateResultInfo:
         replayed is True if the event is being replayed because the
         rate limit was hit.
         """
-        updates = []
+        updates: list[TrackTemplateResult] = []
         info_changed = False
         now = event.time_fired if not replayed and event else dt_util.utcnow()
 
@@ -1075,7 +1075,7 @@ class _TrackTemplateResultInfo:
 
 TrackTemplateResultListener = Callable[
     [
-        Event,
+        Union[Event, None],
         List[TrackTemplateResult],
     ],
     None,