webpack - fs dependency not found

I did npm run dev. I get the following error. I installed fspackage using npmbut there is no js which I could include.

ERROR Failed to compile with 44 errors 10:40:35 AM

This dependency was not found:

• fs in ./~/request/lib/har.js

To install it, you can run: npm install --save fs

What am I missing?

via Fahad Iqbal Ahmad Khan