Remove characters with duplicated power color from collection

gistfile1.txt

const https = require('https');

https.get(
  "https://my.api.mockaroo.com/mpq-cards.json?key=a65ab360",
  (r) => {
    let content = ""
    r.on("data", (chunk) => { content += chunk; });
  
    r.on("end", () => {
      try {
        const raw = JSON.parse(content);
        const filtered = raw.filter(i => i.powers.length === new Set(i.powers.map(p => p.color)).size);
        
        console.log(`Source Characters Count: ${raw.length}`)
        console.log(`Filtered Characters Count: ${filtered.length}`)

      } catch (e) {
        console.error(e.message);
      }
    });
  });