Use the same logic in previews as the timeline to hide events that should be hidden

src/stores/room-list/MessagePreviewStore.ts

@@ -32,6 +32,7 @@ import { UPDATE_EVENT } from "../AsyncStore";
 import { IPreview } from "./previews/IPreview";
 import { VoiceBroadcastInfoEventType } from "../../voice-broadcast";
 import { VoiceBroadcastPreview } from "./previews/VoiceBroadcastPreview";
+import shouldHideEvent from "../../shouldHideEvent";
 
 // Emitted event for when a room's preview has changed. First argument will the room for which
 // the change happened.
@@ -237,7 +238,8 @@ export class MessagePreviewStore extends AsyncStoreWithClient<IState> {
             const event = events[i];
 
             await this.matrixClient?.decryptEventIfNeeded(event);
-
+            const shouldHide = shouldHideEvent(event);
+            if (shouldHide) continue;
             const previewDef = PREVIEWS[event.getType()];
             if (!previewDef) continue;
             if (previewDef.isState && isNullOrUndefined(event.getStateKey())) continue;

test/stores/room-list/MessagePreviewStore-test.ts

@@ -126,6 +126,62 @@ describe("MessagePreviewStore", () => {
         );
     });
 
+    it("should not display a redacted edit", async () => {
+        const firstMessage = mkMessage({
+            user: "@sender:server",
+            event: true,
+            room: room.roomId,
+            msg: "First message",
+        });
+        await addEvent(store, room, firstMessage, false);
+
+        expect((await store.getPreviewForRoom(room, DefaultTagID.Untagged))?.text).toMatchInlineSnapshot(
+            `"@sender:server: First message"`,
+        );
+
+        const secondMessage = mkMessage({
+            user: "@sender:server",
+            event: true,
+            room: room.roomId,
+            msg: "Second message",
+        });
+        await addEvent(store, room, secondMessage);
+
+        expect((await store.getPreviewForRoom(room, DefaultTagID.Untagged))?.text).toMatchInlineSnapshot(
+            `"@sender:server: Second message"`,
+        );
+
+        const secondMessageEdit = mkEvent({
+            event: true,
+            type: EventType.RoomMessage,
+            user: "@sender:server",
+            room: room.roomId,
+            content: {
+                "body": "* Second Message Edit",
+                "m.new_content": {
+                    body: "Second Message Edit",
+                },
+                "m.relates_to": {
+                    rel_type: RelationType.Replace,
+                    event_id: secondMessage.getId()!,
+                },
+            },
+        });
+        await addEvent(store, room, secondMessageEdit);
+
+        expect((await store.getPreviewForRoom(room, DefaultTagID.Untagged))?.text).toMatchInlineSnapshot(
+            `"@sender:server: Second Message Edit"`,
+        );
+
+        secondMessage.makeRedacted(secondMessage, room);
+
+        await addEvent(store, room, secondMessage);
+
+        expect((await store.getPreviewForRoom(room, DefaultTagID.Untagged))?.text).toMatchInlineSnapshot(
+            `"@sender:server: First message"`,
+        );
+    });
+
     it("should ignore edits to unknown events", async () => {
         await expect(store.getPreviewForRoom(room, DefaultTagID.DM)).resolves.toBeNull();