Learning Node.js Development

The OS module in require()

Once we have created and appended the greetings.txt file, we'll customize this greeting.txt file. To do this, we'll explore one more built-in module. We'll be using more than just appendFile in the future. We'll be exploring other methods. For this section, the real goal is to understand require(). The require() function lets us load in the module's functionality so that we can call it.

The second module that we'll be using is OS, and we can view it in the documentation. In the OS module, we'll use the method defined at the very bottom, os.userInfo([options]):

The os.userInfo([options]) method gets called and returns ...