fix: ignore null in timeline event (#8022) (#8058)

Fixes #8028

Author: alexr00

src/github/graphql.ts

@@ -262,7 +262,7 @@ export interface TimelineEventsResponse {
 	repository: {
 		pullRequest: {
 			timelineItems: {
-				nodes: (MergedEvent | Review | IssueComment | Commit | AssignedEvent | HeadRefDeletedEvent)[];
+				nodes: (MergedEvent | Review | IssueComment | Commit | AssignedEvent | HeadRefDeletedEvent | null)[];
 			};
 		};
 	} | null;

src/github/utils.ts

@@ -1118,6 +1118,7 @@ export async function parseCombinedTimelineEvents(
 		| GraphQL.AssignedEvent
 		| GraphQL.HeadRefDeletedEvent
 		| GraphQL.CrossReferencedEvent
+		| null
 	)[],
 	restEvents: Common.TimelineEvent[],
 	githubRepository: GitHubRepository,
@@ -1147,6 +1148,9 @@ export async function parseCombinedTimelineEvents(
 
 	// TODO: work the rest events into the appropriate place in the timeline
 	for (const event of events) {
+		if (!event) {
+			continue;
+		}
 		const type = convertGraphQLEventType(event.__typename);
 
 		switch (type) {