const mongoose = require('mongoose');

// Connect with buffering enabled (default)
await mongoose.connect('mongodb://localhost:27017/test');

const TestModel = mongoose.model('Test', { name: String });

// Reproduce memory leak
console.log('Initial memory:', process.memoryUsage().heapUsed);

for (let i = 0; i < 1000; i++) {
  // Each operation creates setTimeout that's never cleared
  await TestModel.find({}).exec();
  
  if (i % 100 === 0) {
    console.log(`After ${i} ops:`, process.memoryUsage().heapUsed);
  }
}

// Memory usage will show continuous growth
console.log('Final memory:', process.memoryUsage().heapUsed);


### Expected Behavior

When buffered collection operations complete successfully, their associated setTimeout timers should be automatically cleared to prevent memory leaks.

Specifically:
- Memory usage should remain stable after operations finish
- No timeout references should accumulate in the event loop
- Only active/pending operations should have associated timers
- Successful operations should clean up all allocated resources