diff --git a/synapse/events/builder.py b/synapse/events/builder.py
index 26e3950859..87e2bb123b 100644
--- a/synapse/events/builder.py
+++ b/synapse/events/builder.py
@@ -132,12 +132,12 @@ class EventBuilder:
format_version = self.room_version.event_format
if format_version == EventFormatVersions.V1:
# The types of auth/prev events changes between event versions.
- auth_events = await self._store.add_event_hashes(
- auth_event_ids
- ) # type: Union[List[str], List[Tuple[str, Dict[str, str]]]]
- prev_events = await self._store.add_event_hashes(
- prev_event_ids
- ) # type: Union[List[str], List[Tuple[str, Dict[str, str]]]]
+ auth_events: Union[
+ List[str], List[Tuple[str, Dict[str, str]]]
+ ] = await self._store.add_event_hashes(auth_event_ids)
+ prev_events: Union[
+ List[str], List[Tuple[str, Dict[str, str]]]
+ ] = await self._store.add_event_hashes(prev_event_ids)
else:
auth_events = auth_event_ids
prev_events = prev_event_ids
@@ -156,7 +156,7 @@ class EventBuilder:
# the db)
depth = min(depth, MAX_DEPTH)
- event_dict = {
+ event_dict: Dict[str, Any] = {
"auth_events": auth_events,
"prev_events": prev_events,
"type": self.type,
@@ -166,7 +166,7 @@ class EventBuilder:
"unsigned": self.unsigned,
"depth": depth,
"prev_state": [],
- } # type: Dict[str, Any]
+ }
if self.is_state():
event_dict["state_key"] = self._state_key
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