MongoDB Kullanılmayan İndeksleri Bulma ($indexStats)

const out = [];
db.getCollectionInfos({ type: "collection" }).forEach(c => {
  db.getCollection(c.name).aggregate([{ $indexStats: {} }]).forEach(i => {
    if (i.name !== "_id_" && i.accesses.ops === 0) {
      out.push({ collection: c.name, index: i.name, key: JSON.stringify(i.key), since: i.accesses.since });
    }
  });
});
console.table(out);