Source: https://seerepo.com/compare/denoland/deno/vs/parcel-bundler/parcel
Markdown source: https://seerepo.com/compare/denoland/deno/vs/parcel-bundler/parcel.md
Description: deno and parcel share 4 technologies: React, image, log, and tracing. Both are written in Rust.

# deno vs parcel

deno and parcel share 4 technologies: React, image, log, and tracing. Both are written in Rust.

- [denoland/deno](https://seerepo.com/r/denoland/deno): A modern runtime for JavaScript and TypeScript.
- [parcel-bundler/parcel](https://seerepo.com/r/parcel-bundler/parcel): The zero configuration build tool for the web. 📦🚀

## What they share and what sets them apart

- In common: React, image, log, tracing
- Only in deno: rusqlite, SQLite, Tokio, tower, wgpu, crossterm, ed25519-dalek, hmac, keyring, argon2, hkdf, zip, plist, opentelemetry, tracing-opentelemetry, env_logger, tracing-subscriber
- Only in parcel: Tailwind CSS, lightningcss, cssparser, anstyle, html5ever, xml5ever, markdown, oxipng, Less, PostCSS, posthtml, Pug, Stylus, sugarss

## Side by side

| | deno | parcel |
|---|---|---|
| Size | 1,217,015 lines written, 1,355 code files | 141,200 lines written, 239 code files |
| Who writes it | 2.4% of its commits signed by AI. With Claude Code, GitHub Copilot, Cursor, and Codex | 2.5% of its commits signed by AI. With Claude Code, Codex, and Gemini CLI |
| Activity | Last push October 29, 2026, 17,392 commits, 108,801 stars | Last push November 4, 2026, 4,005 commits, 44,014 stars |
| Tests | 4,394 test files. 6.1% of its code files have a test that imports them | 1,603 test files. 25.1% of its code files have a test that imports them |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, deno or parcel?

deno, with 1,217,015 lines written; parcel has 141,200.

The proof: [denoland/deno's code at commit e7b39eb](https://github.com/denoland/deno/tree/e7b39ebd55c85aaf6a29290c1f5a99e2e21e09dd)

### Which has more GitHub stars, deno or parcel?

deno, with 108,801 stars; parcel has 44,014.

The proof: [denoland/deno on GitHub](https://github.com/denoland/deno)

### Which has more tests, deno or parcel?

deno, with 4,394 test files; parcel has 1,603.

The proof: [denoland/deno's code at commit e7b39eb](https://github.com/denoland/deno/tree/e7b39ebd55c85aaf6a29290c1f5a99e2e21e09dd)

### Which was updated more recently, deno or parcel?

parcel: its last push was on November 4, 2026, and deno's on October 29, 2026.

The proof: [parcel-bundler/parcel's commits on GitHub](https://github.com/parcel-bundler/parcel/commits)

### Which has more commits signed by AI, deno or parcel?

parcel: an AI signed 2.5% of its commits, with Claude Code, Codex, and Gemini CLI; in deno, 2.4%.

The proof: [the commits each tool signed in parcel-bundler/parcel](https://seerepo.com/r/parcel-bundler/parcel/ai)

## Sources

- denoland/deno: Read on November 4, 2026, at commit e7b39eb (https://github.com/denoland/deno/tree/e7b39ebd55c85aaf6a29290c1f5a99e2e21e09dd)
- parcel-bundler/parcel: Read on November 6, 2026, at commit 0256839 (https://github.com/parcel-bundler/parcel/tree/0256839dee32fcca0a0cfd72f48e70ab757fa8ec)

## 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.