Environment Variables

Environment variables...

1. Listing environment variables

   console.log(process.env);

2. The following will add the environment variable API_KEY before running the index.js file with the node command.

   API_KEY=the-value-of-the-key-goes-here node index.js

3. Setting environment variables in a node script

   process.env.APP_NAME = 'Dabble Lab Example App';

Using .env files

You can load environment variable from a file named .env using the dotenv npm module

1. Install the npm package

   npm install dotenv --save

2. Add a file to the project named .env with each variable and value on its own line

   API_KEY=the-value-of-the-key-goes-here
   APP_NAME = 'Dabble Lab Example App'

3. Add the following require command before using the environment variable

   require('dotenv').config();

4. Check for the NODE_ENV

   if (process.env.NODE_ENV !== 'production') {
     require('dotenv').config();
   }

5. Use the variable

   console.log('App Name:', process.env.APP_NAME);