What does express.static() return?
all the express content inside the public folder
What is the local __dirname variable in a Node.js module?
__dirname is an environment variable that tells you the absolute path of the directory containing the currently executing file.
What does the join() method of Node’s path module do?
join() method joins the specified path segments into one path. You can specify as many path segments as you like. The specified path segments must be strings, separated by comma.