The readRank function does not return the correct rank

[noprops]

The readRank function does not return the correct rank because it is not guaranteed to search from the bucket with the highest score.
Also, in the createScore function, I think count should represent the number of all individual scores under it, but it actually represents the number of buckets under it.
Therefore, if there is another Range under the Range, the count will not be correct.

[noprops]

The problem is that pendingWrites is not executed when there is no appropriate range.

// No appropriate range was found, create an `exact` value.
for (const write of pendingWrites) {
  write(transaction);
}
transaction.create(coll.doc(), {exact: {score: value, user: id}});

[noprops]

In readRank, I sorted the collection because I need to check the higher score first.

async function findPlayerScoreInCollection(id, value, coll, currentCount) {
const snapshot = await coll.get();
const sortedDocs = snapshot.docs.sort((a, b) => {
const aValue = a.data().range ? a.data().range.max : a.data().exact.score;
const bValue = b.data().range ? b.data().range.max : b.data().exact.score;
return bValue - aValue; // sort in descending order
});
for (const doc of sortedDocs) {