The Node.js test assesses the capabilities of the candidate in understanding the platform and architecture of the environment, as well as the various modules and packages.
The assessment also ensures that the applicant understands how to take advantage of asynchronous (single-thread) I/O, how to interface with different runtime environments, and how to scale using cluster or pm2.
It also assesses the candidate on their skill in making add-ons using N-API, navigating the npm (pre-installed package manager), and using web frameworks developed by the open-source community.