view data fixes

apps/website/lib/builders/view-data/RacesViewDataBuilder.ts

@@ -1,3 +1,9 @@
+/**
+ * Races View Data Builder
+ * 
+ * Transforms API DTO to ViewData for templates.
+ */
+
 import { DateFormatter } from '@/lib/formatters/DateFormatter';
 import { RaceStatusFormatter } from '@/lib/formatters/RaceStatusFormatter';
 import { RelativeTimeFormatter } from '@/lib/formatters/RelativeTimeFormatter';
@@ -6,14 +12,16 @@ import type { RacesViewData, RaceViewData } from '@/lib/view-data/RacesViewData'
 
 import { ViewDataBuilder } from "../../contracts/builders/ViewDataBuilder";
 
-export class RacesViewDataBuilder implements ViewDataBuilder<any, any> {
-  build(input: any): any {
-    return RacesViewDataBuilder.build(input);
-  }
-
-  static build(apiDto: RacesPageDataDTO): RacesViewData {
+export class RacesViewDataBuilder {
+  /**
+   * Transform API DTO to ViewData
+   * 
+   * @param apiDto - The DTO from the service
+   * @returns ViewData for the races page
+   */
+  public static build(apiDto: RacesPageDataDTO): RacesViewData {
     const now = new Date();
-    const races = apiDto.races.map((race): RaceViewData => {
+    const races = (apiDto.races || []).map((race): RaceViewData => {
       return {
         id: race.id,
         track: race.track,
@@ -73,3 +81,5 @@ export class RacesViewDataBuilder implements ViewDataBuilder<any, any> {
     };
   }
 }
+
+RacesViewDataBuilder satisfies ViewDataBuilder<RacesPageDataDTO, RacesViewData>;