I would link to ask if the MondoDB support transaction functions.
let session = null;
return Customer.createCollection().
then(() => Customer.startSession()).
// ThewithTransaction()function's first parameter is a function
// that returns a promise.
then(_session => {
session = _session;
return session.withTransaction(() => {
return Customer.create([{ name: 'Test' }], { session: session });
});
}).
then(() => Customer.countDocuments()).
then(count => assert.strictEqual(count, 1)).
then(() => session.endSession());