Just a heads-up - we've heard a couple reports in the last 24 hours of folks upgrading to macOS Catalina and using Node 12 hitting hangs when using Pulumi - see https://github.com/pulumi/pulumi/issues/3309 for details. We are actively looking into this, but for now, we suggest that folks upgrading to Catalina ensure they are using Node 10 (the current LTS release).