Source: https://seerepo.com/r/vercel/next.js
Markdown source: https://seerepo.com/r/vercel/next.js.md
Description: vercel/next.js is a JavaScript repo with 2,391,614 lines written in 5,697 files. next.js is built with React, Express, Tokio, and 3 more.

# What's inside vercel/next.js

vercel/next.js is a JavaScript repo with 2,391,614 lines written in 5,697 files. next.js is built with React, Express, Tokio, and 3 more. AI signed 0.8% of the 36,392 commits of next.js.

Its description on GitHub: “The React Framework”

JavaScript · MIT · 143,262 stars · GitHub: https://github.com/vercel/next.js

Read on November 4, 2026, at commit 97f1a2c.

## More on this repo

- [What is next.js built with?](https://seerepo.com/r/vercel/next.js/built): next.js is built with React, Express, Tokio, and 3 more.
- [How much of next.js did AI write?](https://seerepo.com/r/vercel/next.js/ai): AI signed 0.8% of the 36,392 commits of next.js.

## In figures

- 2,391,614 lines written: The ones people and agents wrote: product, tests, schemas and tooling. Generated code doesn’t count.
- 5,697 files: The product’s, not counting tests.
- 18,587 test files: The files that test the code.
- 35 technologies: Each service with the file and line that prove it.

SeeRepo read the facts in its code and kept none of it. AI only helps sort its packages and folders by their names, and never sees its code.

## Frequently asked questions

### What is vercel/next.js?

vercel/next.js is a JavaScript repo with 2,391,614 lines written in 5,697 files. Its description on GitHub: “The React Framework”

The proof: [its page on GitHub](https://github.com/vercel/next.js)

### What is next.js built with?

next.js is built with React, Express, Tokio, and 3 more.

The proof: [each service with its file and line](https://seerepo.com/r/vercel/next.js/built)

### How much of next.js did AI write?

AI signed 0.8% of the 36,392 commits of next.js.

The proof: [the commits each tool signed](https://seerepo.com/r/vercel/next.js/ai)

### What license does next.js have?

next.js is released under the MIT license.

The proof: [its page on GitHub](https://github.com/vercel/next.js)

### How many stars does next.js have on GitHub?

next.js had 143,262 stars on GitHub on November 4, 2026.

The proof: [its page on GitHub](https://github.com/vercel/next.js)

## Add this badge to your README

It links to this page and updates itself each time SeeRepo reads the repo.

```markdown
[![vercel/next.js on SeeRepo](https://seerepo.com/badge/vercel/next.js.svg)](https://seerepo.com/r/vercel/next.js?de=insignia)
```

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.