Please refer to the NodeSource README.md for details on Node.js installation.
The version of Node.js that IAP requires may be found in Release Notes of the relevant IAP release version.
Verify that Node.js is installed and available from the PATH environment variable. The path will depend on your environment. The path below is provided as an example.
$ command -v node /bin/node
Check which version of Node.js is installed. Refer to Release Notes for the current supported version.
$ node -v <vxx.x.x>