import { type ComputedGachaData } from "https://deno.land/x/fortuna@v2.0.3/mod.ts";
Data transformed by the constructor, fed to the binary search function.
The result property holds the result that will be returned after rolling.
chance is the weight of the result.
cumulativeChance is used to make it fit for binary search.
tier is an optional parameter to group the items for rolling.