What is the use of __dirname and __filename?

Short answer: __dirname: Returns the directory path of the current module. __filename: Returns the full file path of the current module. 📌

Example code

console.log(__dirname); // /Users/yourname/project console.log(__filename); // /Users/yourname/project/app.js These are very useful for reading or writing files relative to the script's location. PM and Module Management

Real-world example (ShopNest)

A ShopNest BFF in Node.js aggregates catalog and price APIs for the React storefront.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.