createStats.js

const fs = require("fs");

const configs = require("./config");

const keyforge = {};
const set = {};
configs.expansion
  .filter(expansion => expansion.code < 1000)
  .filter(expansion => expansion.name !== "")
  .forEach(expansion => {
    console.log("Loading cards from " + expansion.longname + "...");
    const cardsFolder = "./json/" + expansion.lang + "/" + expansion.name + "/";
    const cards = fs.readdirSync(cardsFolder);
    console.log("Setup to processing " + cards.length + " cards...");
    set[expansion.name] = {};
    cards.forEach(file => {
      let card = JSON.parse(fs.readFileSync(cardsFolder + file).toString());
      const cardName = `${card.card_title}${
        card.rarity === "Evil Twin" ? " (GM)" : ""
      }`;
      if (!keyforge[cardName]) keyforge[cardName] = [];
      if (!set[expansion.name][cardName]) {
        set[expansion.name][cardName] = [];
      }

      keyforge[cardName].push(card);
      set[expansion.name][cardName].push(card);
    });
    console.log(Object.keys(set[expansion.name]).length + " different cards!");
  });

console.log(
  `KeyForge has ${Object.keys(keyforge).length} total different cards!`
);