Source: https://seerepo.com/r/expressjs/express/built
Markdown source: https://seerepo.com/r/expressjs/express/built.md
Description: express is a JavaScript repo. It signs people in with cookie-signature, makes its content with EJS and escape-html, and is tested with supertest.

# What is express built with?

express is a JavaScript repo. It signs people in with cookie-signature, makes its content with EJS and escape-html, and is tested with supertest. It has 22,050 written lines, with 96 test files.

Read on November 5, 2026, at commit 43fca52.

Repository: https://github.com/expressjs/express

## Backend

### Sign-in

- **cookie-signature**: 1 file

## Support

### Content

- **EJS**: 1 file
- **[escape-html](https://seerepo.com/uses/escape-html)**: 1 file

### Testing

- **supertest**: 80 files

### Other

- **cookie-parser**: 2 files
- **debug**: 2 files
- **mime-types**: 2 files
- **body-parser**: 1 file
- **content-disposition**: 1 file
- **content-type**: 1 file
- **cookie**: 1 file
- **encodeurl**: 1 file
- **etag**: 1 file
- **http-errors**: 1 file
- **on-finished**: 1 file
- **parseurl**: 1 file
- **qs**: 1 file
- **send**: 1 file
- **serve-static**: 1 file
- **type-is**: 1 file
- **vary**: 1 file

## Other repos with a similar stack

- [firecrawl/firecrawl](https://seerepo.com/r/firecrawl/firecrawl/built): escape-html
- [nestjs/nest](https://seerepo.com/r/nestjs/nest/built): cookie-signature
- [meta/docusaurus](https://seerepo.com/r/meta/docusaurus/built): escape-html
- [cypress-io/cypress](https://seerepo.com/r/cypress-io/cypress/built): EJS
- [mastodon/mastodon](https://seerepo.com/r/mastodon/mastodon/built): escape-html
- [usebruno/bruno](https://seerepo.com/r/usebruno/bruno/built): escape-html

## Frequently asked questions

### What language is express written in?

express is written in JavaScript, with 22,050 written lines.

### What does express sign people in with?

express signs people in with cookie-signature.

### Does express have tests?

Yes. express has 96 test files and is tested with supertest.

### Which repos have a stack like express's?

The ones that share most of its stack: firecrawl/firecrawl, nestjs/nest, and meta/docusaurus.

## 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.