test.js

var MongoClient = require('mongodb').MongoClient;

async function fetchDatabase() {
  console.log('fetch database called');
  let client, db;
  const databaseURL = 'mongodb://127.0.0.1:27017/?gssapiServiceName=mongodb';
  const database = 'Task';
  const collection = 'taxi_data_new_1';

  try {
    client = await MongoClient.connect(databaseURL, {
      useUnifiedTopology: true,
      useNewUrlParser: true
    });
    db = client.db(database);
    let dbCollection = db.collection(collection);

    const geoQuery = {
      loc: {
        $geoWithin: {
          $box: [
            [-73.02823925018312, 40.73610423919209],
            [-74.95957469940187, 40.7640963068463]
          ]
        }
      }
    }

    dbCollection.createIndex({ loc: "2dsphere" });
    let queryResult = await dbCollection.find(geoQuery, {loc:1}).hint("loc_2dsphere").explain();
    console.log(queryResult.queryPlanner);
    console.log(queryResult);


    // console.log(queryResult.length);
    // dbCollection.dropIndexes(); 


  }
  catch (err) { console.log(err); }
  
}

async function test() {

}

fetchDatabase();