refactor(LOY-62): implement code review feedback

types/components/myPages/rewards.ts

@@ -1,5 +1,9 @@
 import type { IconProps } from "@/types/components/icon"
-import type { RESTAURANT_REWARD_IDS, REWARD_IDS } from "@/constants/rewards"
+import type {
+  COUPON_REWARD_TYPES,
+  RESTAURANT_REWARD_IDS,
+  REWARD_IDS,
+} from "@/constants/rewards"
 
 export interface RewardIconProps extends IconProps {
   rewardId: string
@@ -9,3 +13,5 @@ export interface RewardIconProps extends IconProps {
 export type RewardId = (typeof REWARD_IDS)[keyof typeof REWARD_IDS]
 
 export type RestaurantRewardId = (typeof RESTAURANT_REWARD_IDS)[number]
+
+export type CouponRewardType = (typeof COUPON_REWARD_TYPES)[number]