Initialize a package.json file in the root folder of your project:

npm init -y

Then install any npm package you need, for example:

npm install axios

A node_modules folder and a package-lock.json file will be created. Commit both (yes, you need to add the node_modules content to the repository you want to deploy; try to keep your dependencies as few as possible).

That’s it. You can now access those npm packages using require() in your Netlify Functions.

Lessons in this unit:

0:	Introduction
1:	Create a Netlify account
2:	Deploy to Netlify
3:	A tutorial to host your Static Site on Netlify
4:	Auto trigger deploys on Netlify
5:	Netlify Lambda Functions Tutorial
6:	How to use environment variables in Netlify functions
7:	▶︎ How to use npm packages in Netlify Functions
8:	How to access query parameters in Netlify functions
9:	How to test Netlify Functions locally
10:	How to use Netlify Edge Functions
11:	How to set up "cloud cron jobs" using Netlify Scheduled Functions
12:	How I fixed the trailing slash in Netlify rewrites
13:	Durable cache on Netlify
14:	How to return HTML from a Netlify function
15:	How to use ES modules in Netlify functions
16:	How to trigger a Netlify-Vercel-Cloudflare Pages redeploy using a link