Powershell script in cloud-init for windows ec2 in nodejs

I have a nodejs script that creates a new ec2 instances with the given specifications using the AWS Node SDK. Now, I want to include a powershell script in the UserData parameter of the ec2.runInstances(..) method so that the instance executes this powershell script when its launching.

I know there is a way to include bash scripts in the cloud-init part in the UserData section for linux based ec2 instances. I am not sure if powershell script could be embedded in the cloud-init structure in UserData for windows ec2. Any pointers in this directions would be great. Thanks.