code quality

core/rating/domain/events/RatingCalculatedEvent.ts

@@ -1,15 +1,22 @@
 /**
  * RatingCalculatedEvent
- * 
+ *
  * Event published when a driver's rating is calculated.
  */
 
 import { DomainEvent } from '../../../shared/ports/EventPublisher';
-import { Rating } from '../Rating';
+import { Rating, RatingJSON } from '../Rating';
+
+export interface RatingCalculatedEventJSON {
+  type: string;
+  timestamp: string;
+  rating: RatingJSON;
+}
 
 export class RatingCalculatedEvent implements DomainEvent {
   readonly type = 'RatingCalculatedEvent';
   readonly timestamp: Date;
+  [key: string]: unknown;
 
   constructor(private readonly rating: Rating) {
     this.timestamp = new Date();
@@ -19,7 +26,7 @@ export class RatingCalculatedEvent implements DomainEvent {
     return this.rating;
   }
 
-  toJSON(): Record<string, any> {
+  toJSON(): RatingCalculatedEventJSON {
     return {
       type: this.type,
       timestamp: this.timestamp.toISOString(),