google datastore transactions

I am having a lot of issues with google cloud datastore & transactions.

I am building a react/nodeJS web app. For the database I am using google cloud datastore. I use the emulator (google cloud datastore emulator) for local development.

The time has come for transactions. Unfortunately for me I cannot seem to instantiate a transaction object. I have wrapped the problem statement in console log. Example code:

console.log('before transaction()')
const transaction = datastore.transaction();
console.log('after transaction()')

Actually output:

before transaction()

Expected output:

before transaction()
after transaction()

I don't get any error message.

Note: I am certain I have instantiated my datastore object correctly because I can execute queries against the emulator and real db. The problem is specific to calling datastore.transaction(), as shown in the above example code.

Questions:

• Is this issue specific to google cloud emulator?
• Is the documentation of the API out dated?

Here are the links to google cloud datastore transaction docs: https://cloud.google.com/nodejs/docs/reference/datastore/1.3.x/Transaction