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Environment Variables

dotenv​

  • Guide Medium Article

  • Install npm i dotenv

  • Create a file .env in root directory

.env
MONGO_URI=mongodb://localhost:27017/express-demo
  • Add .env to .gitignore
.gitignore
.env
node_modules
  • require dotenv config in app.js
app.js
require('dotenv').config()
  • Access environment variables using process.env
app.js
mongoose.connect(

    process.env.MONGO_URI,

    { useNewUrlParser: true, useUnifiedTopology: true },
    () => console.log("Connected to DB")
);