feat(NODE-4079): estimated document count uses count

mongodb · May 11, 2022 · bfbe11b · bfbe11b
1 parent 15f8870
commit bfbe11b
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Showing 7 changed files with 168 additions and 468 deletions.
diff --git a/src/operations/estimated_document_count.ts b/src/operations/estimated_document_count.ts
@@ -36,9 +36,8 @@ export class EstimatedDocumentCountOperation extends CommandOperation<number> {
     if (maxWireVersion(server) < 12) {
       return this.executeLegacy(server, session, callback);
     }
-    const pipeline = [{ $collStats: { count: {} } }, { $group: { _id: 1, n: { $sum: '$count' } } }];
 
-    const cmd: Document = { aggregate: this.collectionName, pipeline, cursor: {} };
+    const cmd: Document = { count: this.collectionName };
 
     if (typeof this.options.maxTimeMS === 'number') {
       cmd.maxTimeMS = this.options.maxTimeMS;
@@ -50,7 +49,7 @@ export class EstimatedDocumentCountOperation extends CommandOperation<number> {
         return;
       }
 
-      callback(undefined, response?.cursor?.firstBatch[0]?.n || 0);
+      callback(undefined, response?.n || 0);
     });
   }