Deno v0.35.0 — Release Notes & Engineering Impact

Source available — automated, not human-reviewed

Component: deno · Channel: stable. Automated analysis, not a compatibility certification. How this works.

Analysis updated: 2026-11-01.

Compatibility not verified — check source notes

📄 .MD

✨ Features 6 🔧 Bug Fixes 6

⚡ Executive Summary (TL;DR)

Deno v0.35.0. Source highlight: feat: Deno.fsEvents() (#3452)

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Who Does This Impact? (Role-Based Analysis)

💻 Software Engineers & Devs

Check the source notes against the package and APIs you use before upgrading.

📊 Product & Engineering Leads

Use the documented changes to assess relevance to your product; release frequency alone is not a quality measure.

⚙️ DevOps & Security

Verify the target version, runtime requirements and rollback procedure in the official documentation.

✨ New Features & Capabilities (6)

feat: Deno.fsEvents() (#3452)
feat: Support UDP sockets (#3946)
feat: Deno.setRaw(rid, mode) to turn on/off raw mode (#3958)
feat: Add Deno.formatDiagnostics (#4032)
feat: Support TypeScript eval through `deno eval -T` flag (#4141)
feat: Support types compiler option in compiler APIs (#4155)

🔧 Bug Fixes & Patches (6)

fix(fetch): proper error for unsupported protocol (#4085)
fix(std/examples): add tests for examples (#4094)
fix(std/http): Consume unread body before reading next request (#3990)
fix(std/ws): createSecKey logic (#4063)
fix(std/ws): provide default close code for ws.close() (#4172)
fix(std/ws): sock shouldn't throw eof error when failed to read frame (#4083)

📄 View Raw Release Notes (Original Developer Log)

### Changes - feat: Deno.fsEvents() (#3452) - feat: Support UDP sockets (#3946) - feat: Deno.setRaw(rid, mode) to turn on/off raw mode (#3958) - feat: Add Deno.formatDiagnostics (#4032) - feat: Support TypeScript eval through `deno eval -T` flag (#4141) - feat: Support types compiler option in compiler APIs (#4155) - feat: add std/examples/chat (#4022, #4109, #4091) - feat: support brotli compression for fetch API (#4082) - feat: reverse URL lookup for cache (#4175) - feat(std/node): add improve os module (#4064, #4075, #4065) - feat(std/node): add os Symbol.toPrimitive methods (#4073) - fix(fetch): proper error for unsupported protocol (#4085) - fix(std/examples): add tests for examples (#4094) - fix(std/http): Consume unread body before reading next request (#3990) - fix(std/ws): createSecKey logic (#4063) - fix(std/ws): provide default close code for ws.close() (#4172) - fix(std/ws): sock shouldn't throw eof error when failed to read frame (#4083) - fix: Bundles can be sync or async based on top level await (#4124) - fix: Move WebAsssembly namespace to shared_globals (#4084) - fix: Resolve makeTemp paths from CWD (#4104) - fix: Return non-zero exit code on malformed stdin fmt (#4163) - fix: add window.self read-only property (#4131) - fix: fetch in workers (#4054) - fix: fetch_cached_remote_source support redirect URL without base (#4099) - fix: issues with JavaScript importing JavaScript. (#4120) - fix: rewrite normalize_path (#4143) - refactor(std/http): move io functions to http/io.ts (#4126) - refactor: Deno.errors (#3936, #4058, #4113, #4093) - upgrade: TypeScript 3.8 (#4100) - upgrade: dprint 0.7.0 (#4130) - upgrade: rusty_v8 0.3.4 (#4179) ### Install / Upgrade **With Shell:** ```sh curl -fsSL https://deno.land/x/install/install.sh | sh -s v0.35.0 ``` **With PowerShell:** ```powershell iwr https://deno.land/x/install/install.ps1 -useb -outf install.ps1; .\install.ps1 v0.35.0 ```

← Older Version Deno v0.34.0 Newer Version → Deno v0.36.0