refactor

core/racing/domain/value-objects/JoinedAt.ts

@@ -0,0 +1,21 @@
+import { RacingDomainValidationError } from '../errors/RacingDomainError';
+
+export class JoinedAt {
+  private constructor(private readonly value: Date) {}
+
+  static create(value: Date): JoinedAt {
+    const now = new Date();
+    if (value > now) {
+      throw new RacingDomainValidationError('Joined date cannot be in the future');
+    }
+    return new JoinedAt(new Date(value));
+  }
+
+  toDate(): Date {
+    return new Date(this.value);
+  }
+
+  equals(other: JoinedAt): boolean {
+    return this.value.getTime() === other.value.getTime();
+  }
+}