feat: adds get next week day util

src/util/getNextDayOfWeek.ts

@@ -0,0 +1,17 @@
+import { WEEKDAY } from 'constants/global'
+
+const weekdays = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday']
+
+/**
+ * gets the date of the next week day requested
+ * 0 to 6 or a value of `WEEKDAY`
+ */
+export function getNextDayOfWeek (day: WEEKDAY | number): Date {
+  const dayOfWeek = typeof day === 'number' ? day : Math.max(weekdays.indexOf(day), 0)
+
+  const date = new Date(Date.now())
+
+  date.setDate(date.getDate() + (7 + dayOfWeek - date.getDay()) % 7)
+
+  return date
+}