Very basic example using module in AWS Lambda function

I'm trying to get the NPN-js module working in an AWS Lambda call. [login to view URL] Right now getting the following error: 2016-03-02T20:54:59.117Z fd5f3eef-e0b8-11e5-a091-41b17d731a1e ReferenceError: AmazonMwsClient is not defined at [login to view URL] (/var/task/[login to view URL]:22) Need help getting past this error. See the attached zip for what I am uploading to the AWS Lambda call. // From [login to view URL] var AWSAccessKeyId = 'AKIAblahblahblah'; var secretAccessKey = 'blahblahblah'; var sellerId = 'blahblahblah'; [login to view URL] = function(event, context) { [login to view URL]('event: ', event); [login to view URL]('context: ', context); var mws = require('mws-js'), client = new AmazonMwsClient( AWSAccessKeyId, secretAccessKey, sellerId, {}); // Get the service status of Sellers API endpoint and print it [login to view URL](new [login to view URL](), [login to view URL]); }