test: add TS checks and fix issues

domain/AppProjections.ts

@@ -1,3 +1,4 @@
+import type DomainProjection from "./DomainProjection";
 import ApplicationUpdates from "./projections/ApplicationUpdates";
 
 export default class AppProjections {

domain/DomainEvent.ts

@@ -1,4 +1,4 @@
-interface DomainEvent<T> {
+export default interface DomainEvent<T> {
   readonly type: string;
   readonly createdAt: Date;
   readonly payload: T;

domain/DomainProjection.ts

@@ -1,3 +1,4 @@
-interface DomainProjection {
+import type DomainEvent from "./DomainEvent";
+export default interface DomainProjection {
   handle(event: DomainEvent<any>): void;
 }

domain/EventStore.ts

@@ -1,3 +1,6 @@
+import DomainEvent from "./DomainEvent";
+import DomainProjection from "./DomainProjection";
+
 export default interface EventStore {
   append(event: DomainEvent<any>): void;
   subscribe(projection: DomainProjection): void;

domain/events/ApplicationUpdateStarted.ts

@@ -1,3 +1,5 @@
+import DomainEvent from "../DomainEvent";
+
 type ApplicationUpdateStartedPayload = {
   id: string;
   newVersion: string;

domain/projections/ApplicationUpdates.ts

@@ -1,3 +1,6 @@
+import DomainEvent from "../DomainEvent";
+import DomainProjection from "../DomainProjection";
+
 export type UpdateDefinition = {
   id: string;
   newVersion: string;

domain/testing/TestApp.ts

@@ -1,5 +1,7 @@
 import AppProjections from "../AppProjections";
 import AppQueries from "../AppQueries";
+import DomainEvent from "../DomainEvent";
+import DomainProjection from "../DomainProjection";
 import EventStore from "../EventStore";
 
 export class TestApp {