Why is process.env.NODE_ENV undefined?
javascript, node.js
Solution
`process.env` is a reference to your environment, so you have to set the variable there.
To set an environment variable in Windows:
SET NODE_ENV=development
on macOS / OS X or Linux:
export NODE_ENV=development
Problem
I'm trying to follow a tutorial on NodeJS. I don't think I missed anything but whenever I call the `process.env.NODE_ENV` the only value I get back is `undefined`. According to my research the default value should be `development`. How is this value dynamically set and where is it set initially?