Return blob from export

src/utils/exportUtils/Exporter.ts

@@ -1,7 +1,7 @@
 import { MatrixEvent } from "matrix-js-sdk/src/models/event";
-import Room from 'matrix-js-sdk/src/models/room';
+import { Room } from "matrix-js-sdk/src/models/room";
 
 export abstract class Exporter {
     constructor(protected res: MatrixEvent[], protected room: Room) {}
-    abstract export(): Promise<void>
+    abstract export(): Promise<Blob>;
 }

src/utils/exportUtils/HtmlExport.ts

@@ -511,6 +511,8 @@ public async export() {
         await waiter;
     }
     writer.close();
+
+    return blob;
 }
 }