expressjsHow can I use dotenv with ExpressJS?

Using dotenv with ExpressJS is a great way to store environment variables in a secure manner. Environment variables are typically used to store sensitive information such as API keys and passwords, and dotenv provides a secure way of storing and retrieving them.

To use dotenv with ExpressJS, first install the dotenv package:

npm install dotenv

Next, create a .env file in the root of your project and add your environment variables to it. For example:

DB_USERNAME=myusername
DB_PASSWORD=mypassword

Now, in your ExpressJS application, you can require the dotenv package and call the config() method to load the environment variables from the .env file.

require('dotenv').config();

You can then access the environment variables using process.env, for example:

console.log(process.env.DB_USERNAME);
// Output: myusername

For more information on using dotenv with ExpressJS, see this article.

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