What is the difference between dependencies and devDependencies?

• dependencies: These are required for your app to run in production.

📌 Example: express, mongoose

• devDependencies: Only needed during development (testing, building, linting).

📌 Example: nodemon, eslint, jest

📦 These are defined in package.json:

"dependencies": {

"express": "^4.18.0"

},

"devDependencies": {

"nodemon": "^3.0.0"

}

✅ Install a dev dependency with:

npm install nodemon --save-dev