@scryfall/api-types/src/objects/Card/values/Rarity.ts

Type definitions for the Scryfall API

export enum ScryfallRarity {
  Common = "common",
  Uncommon = "uncommon",
  Rare = "rare",
  Special = "special",
  Mythic = "mythic",
  Bonus = "bonus",
}

export type ScryfallRarityLike = ScryfallRarity | `${ScryfallRarity}`;