Setup environment variables with Node.js + Dotenv Tutorial. Github Repo - https://github.com/DmsChrisPena/dotenv-example
Node.js Tutorial - https://youtu.be/pU9Q6oiQNd0
In many application, it's always a good idea to set up environment variables to protect your tokens, passwords, db connection strings, etc. It's also great for having one reference to a variable that may change.
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