wip

packages/racing/domain/value-objects/Weekday.ts

@@ -0,0 +1,25 @@
+export type Weekday = 'Mon' | 'Tue' | 'Wed' | 'Thu' | 'Fri' | 'Sat' | 'Sun';
+
+export const ALL_WEEKDAYS: Weekday[] = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'];
+
+export function weekdayToIndex(day: Weekday): number {
+  switch (day) {
+    case 'Mon':
+      return 1;
+    case 'Tue':
+      return 2;
+    case 'Wed':
+      return 3;
+    case 'Thu':
+      return 4;
+    case 'Fri':
+      return 5;
+    case 'Sat':
+      return 6;
+    case 'Sun':
+      return 7;
+    default:
+      // This should be unreachable because Weekday is a closed union.
+      throw new Error(`Unknown weekday: ${day}`);
+  }
+}