# Deno v2.1.0 — Release & Upgrade Intelligence
- **Product:** Deno (https://deno.com)
- **Version:** v2.1.0
- **Released:** Nov 21, 2024
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/deno/updates/v2.1.0/

## Executive Summary (TL;DR)
Deno v2.1.0. Source highlight: feat(cli): add `--unstable-node-globals` flag (#26617)

## New Features
- feat(cli): add `--unstable-node-globals` flag (#26617)
- feat(cli): support multiple env file argument (#26527)
- feat(compile): ability to embed directory in executable (#26939)
- feat(compile): ability to embed local data files (#26934)
- feat(ext/fetch): Make fetch client parameters configurable (#26909)
- feat(ext/fetch): allow embedders to use `hickory_dns_resolver` instead of

## Improvements
- perf(compile): code cache (#26528)
- perf(windows): delay load webgpu and some other dlls (#26917)
- perf: use available system memory for v8 isolate memory limit (#26868)

## Bug Fixes
- fix(cli): preserve comments in doc tests (#26828)
- fix(cli): show prefix hint when installing a package globally (#26629)
- fix(ext/cache): gracefully error when cache creation failed (#26895)
- fix(ext/http): prefer brotli for `accept-encoding: gzip, deflate, br, zstd`
- fix(ext/node): New async setInterval function to improve the nodejs
- fix(ext/node): add autoSelectFamily option to net.createConnection (#26661)