Express JS - Settings, Variables & Locals

This tutorial explains the different ways that you can save settings and values within your Express JS app as well as how you can pass those values around between files within your application.
Starter Code from video - https://gist.github.com/prof3ssorSt3v3/26e14307c4a59bfa402268f4e1494a9a
Full Express JS Playlist - https://www.youtube.com/watch?vcMbJ8hatqJ8&listPLyuRouwmQCjne87u8XUdOM5oCl7vI2vVL
app.locals reference - https://expressjs.com/en/4x/api.html#app.locals
res.locals reference - https://expressjs.com/en/4x/api.html#res.locals