Here is my code:

const MongoClient = require('mongodb').MongoClient;
const assert = require('assert');

// Connection URL
const url = 'mongodb://localhost:27017';

// Database Name
const dbName = 'fruitsDB';

// Create a new MongoClient
const client = new MongoClient(url);

// Use connect method to connect to the Server
client.connect(function(err) {
assert.equal(null, err);
console.log("Connected successfully to server");

const db = client.db(dbName);

insertDocuments(db, function()

{ client.close(); }

);
});

const insertDocuments = function(db, callback) {
// Get the documents collection
const collection = db.collection('fruits');
// Insert some documents
collection.insertMany([

{ name: "Apple" , score: 8, review: "Great fruit" }

,

{ name: "Orange" , score: 6, review: "Kinda Sour" }

,

{ name: "Banana" , score: 9, review: "Great Stuff!" }

], function(err, result)

{ assert.equal(err, null); assert.equal(3, result.result.n); assert.equal(3, result.ops.length); console.log("Inserted 3 documents into the collection"); callback(result); }

);
}

 

 

Here is the error:

assert.equal(3, result.result.n);

                                                 ^

 

TypeError: Cannot read property 'n' of undefined

    at /Users/saurabhagrawal/Desktop/FruitsProject/app.js:47:35

    at /Users/saurabhagrawal/Desktop/FruitsProject/node_modules/mongodb/lib/utils.js:530:9

    at /Users/saurabhagrawal/Desktop/FruitsProject/node_modules/mongodb/lib/operations/execute_operation.js:49:55

    at /Users/saurabhagrawal/Desktop/FruitsProject/node_modules/mongodb/lib/utils.js:530:9

    at completeEndSession (/Users/saurabhagrawal/Desktop/FruitsProject/node_modules/mongodb/lib/sessions.js:147:17)

    at /Users/saurabhagrawal/Desktop/FruitsProject/node_modules/mongodb/lib/sessions.js:157:13

    at Object.maybePromise (/Users/saurabhagrawal/Desktop/FruitsProject/node_modules/mongodb/lib/utils.js:516:5)

    at ClientSession.endSession (/Users/saurabhagrawal/Desktop/FruitsProject/node_modules/mongodb/lib/sessions.js:133:24)

    at /Users/saurabhagrawal/Desktop/FruitsProject/node_modules/mongodb/lib/operations/execute_operation.js:49:36

    at /Users/saurabhagrawal/Desktop/FruitsProject/node_modules/mongodb/lib/operations/insert.js:79:13