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Any chance you can share you code? And if you are using JavaScript, your

node --version

?

I am trying to implement a Mapbox sample app using their template, https://github.com/mapbox/asset-tracking. Curently on node v12.16.1

This is most likely due to the issues in https://github.com/pulumi/pulumi/issues/3528. With Node 12 and newer, there can be hangs in Pulumi programs. We are making changes in Pulumi 2.0 (coming in a few weeks) to prevent the patterns that trigger this. Ahead of that - you can either use Node.js 10, or can update your code to replace this:

//* Specify your IoT Channel to consume in the front-end.
//* This enables real-time updates in browser.
//* The API Gateway will also provide a batch request as needed.
const iotFrontEnd = "frontend";
const getIoTArn = async channel => {
  const current = await aws.getCallerIdentity({});
  const region = await aws.getRegion();
  const iotArn = `arn:aws:iot:${region.name}:${current.accountId}:topic/${channel}`;
  return iotArn;
};
//* Set your AWS IoT Endpoint - this is used to generate the IoTHarness
const IoTEndpoint = aws.iot.getEndpoint({ endpointType: "iot:Data-ATS" })
  .endpointAddress;

With this:

//* Specify your IoT Channel to consume in the front-end.
//* This enables real-time updates in browser.
//* The API Gateway will also provide a batch request as needed.
const iotFrontEnd = "frontend";
const getIoTArn = channel => {
  const current = pulumi.output(aws.getCallerIdentity({ async: true}));
  const region = pulumi.output(aws.getRegion({}, { async: true}));
  const iotArn = pulumi.interpolate`arn:aws:iot:${region.name}:${current.accountId}:topic/${channel}`;
  return iotArn;
};
//* Set your AWS IoT Endpoint - this is used to generate the IoTHarness
const IoTEndpoint = pulumi.output(aws.iot.getEndpoint({ endpointType: "iot:Data-ATS" }, { async: true }))
  .endpointAddress;

Thanks for the reply! I will give this a go!