test: add TS checks and fix issues

infrastructure/FileEventStore.ts

@@ -1,6 +1,8 @@
 import { appendFile } from "node:fs/promises";
 import EventStore from "../domain/EventStore";
 import { ApplicationUpdateStarted } from "../domain/events/ApplicationUpdateStarted";
+import DomainEvent from "../domain/DomainEvent";
+import DomainProjection from "../domain/DomainProjection";
 
 export default class FileEventStore implements EventStore {
   private handlers: DomainProjection[] = [];