node-aws-get-caller-identity.js

var AWS = require('/app/node_modules/aws-sdk');

var sts = new AWS.STS();
sts.getCallerIdentity({}, function(err, data) {
   if (err) {
      console.log("Error", err);
   } else {
      console.log(JSON.stringify(data));
   }
});

In the node REPL. Use the following example to check the AWS role.

const AWS = require('aws-sdk');
AWS.config.logger = console;
const sts = new AWS.STS({region: "us-east-1"});
sts.getCallerIdentity({}, function (error,data){console.log(data)});