Deno v2.9.0 released!

NewsBot · 25 June 2026 15:15

Deno v2.9.0 has been released.

2.9.0 / 2026.06.25

Read more: http://deno.com/blog/v2.9

feat(bundle): add --declaration flag to generate rolled-up .d.ts files
(#33838)

feat(cli): add deno link and deno unlink subcommands (#34359)

feat(cli): add deno watch subcommand (#35301)

feat(cli): add deno list subcommand to list declared dependencies (#34972)

feat(cli): auto-migrate pnpm-workspace.yaml on resolution failure (#34993)

feat(cli): provide a node on PATH when Node.js is not installed (#34969)

feat(compile): persist Web Storage/KV in a per-app data directory (#34618)

feat(coverage): add configurable coverage thresholds (#35056)

feat(desktop): --compress for self-extracting app bundles (#35420)

feat(desktop): add Linux .deb and .rpm installer output formats (#35296)

feat(desktop): add Windows .msi installer output format (#35378)

feat(desktop): autodetect Vite framework (#35470)

feat(desktop): default UI backend to webview (#35442)

feat(ext/crypto): support remaining modern WebCrypto algorithms (#35223)

feat(ext/http): deprecation warning for legacy request abort (#34397)

feat(ext/net): implement Happy Eyeballs for Deno.connect and
Deno.connectTls (#31726)

feat(ext/node): implement node:test mock.module (#35329)

feat(ext/node): implement node:test mock.timers (#33946)

feat(ext/web): web locks api (#31166)

feat(fmt): add sortNamedImports and sortNamedExports options (#33313)

feat(fmt): infer config from .editorconfig (#34071)

feat(fmt): use lax-css for CSS, SCSS, and Less (#35160)

feat(fmt): use lax-markup for HTML, XML, SVG, and components (#35174)

feat(fmt): use lax-sql for SQL formatting (#35161)

feat(http): allow disabling serve compression (#35253)

feat(http): disable Deno.serve automatic compression by default (#35486)

feat(install): create node_modules for workspace members (#34970)

feat(install): seed deno.lock from bun.lock (#35394)

feat(install): seed deno.lock from package-…

Link: Release v2.9.0 · denoland/deno · GitHub