# Deno v2.4.4 — Release & Upgrade Intelligence
- **Product:** Deno (https://deno.com)
- **Version:** v2.4.4
- **Released:** Aug 13, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/deno/updates/v2.4.4/

## Executive Summary (TL;DR)
Deno v2.4.4. Source highlight: feat(unstable): add json repl (#30307)

## New Features
- feat(unstable): add json repl (#30307)
- feat(unstable): allow setting headers on EventSource (#30278)
- feat(unstable): allow specifying default path and path prefix (#30320)
- feat(unstable): implement custom inspect for AtomicOperation (#30077)

## Improvements
- perf(napi): misc napi optimizations (#30291)
- perf: use more efficient structuredClone API (#30258)
- perf: reduce heap allocations and memory creating cjs wrapper module (#30344)

## Bug Fixes
- fix(bundle): require of sub directory in npm package should consult
- fix(bundle): support importing directories with a package.json from an es
- fix(bundle): use non-node conditions for --platform=browser (#30250)
- fix(check): do not surface code resolution errors in declaration file
- fix(compile): ensure `Deno.build.standalone` is set in workers (#30335)
- fix(ext/node): `fs.open` and `fs.openSync` compatibility (#30191)