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Deno v0.31.0stable Released Jan 24, 2020
⚠️ Breaking Change Impact Score: 7/10

Deno v0.31.0 — 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.

Breaking-change evidence from the source

  • - BREAKING CHANGE: remove support for blob: URL in Worker (#3722)
  • - BREAKING CHANGE: remove Deno namespace support and noDenoNamespace option in
  • - BREAKING CHANGE: rename dial to connect and dialTLS to connectTLS (#3710)
Read the original context ↗
Source flags breaking changes — review applicability
📄 .MD
✨ Features 5 ⚡ Improvements 2 🔧 Bug Fixes 1 ⚠️ Breaking & Deprecations 3
⚡ Executive Summary (TL;DR)

Deno v0.31.0. Source highlight: BREAKING CHANGE: remove support for blob: URL in Worker (#3722)

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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.

⚠️ Breaking Changes & Deprecations (3)

  • - BREAKING CHANGE: remove support for blob: URL in Worker (#3722)
  • - BREAKING CHANGE: remove Deno namespace support and noDenoNamespace option in
  • - BREAKING CHANGE: rename dial to connect and dialTLS to connectTLS (#3710)

✨ New Features & Capabilities (5)

  • feat: Add signal handlers (#3757)
  • feat: Implemented alternative open mode in files (#3119)
  • feat: Use globalThis to reference global scope (#3719)
  • feat: add AsyncUnref ops (#3721)
  • feat: stabilize net Addr (#3709)

⚡ Performance & Enhancements (2)

  • refactor: Improve path handling in permission checks (#3714)
  • refactor: Improve web workers (#3722, #3732, #3730, #3735)

🔧 Bug Fixes & Patches (1)

  • fix: correct yaml's sortKeys type (#3708)
📄 View Raw Release Notes (Original Developer Log)
### Changes - BREAKING CHANGE: remove support for blob: URL in Worker (#3722) - BREAKING CHANGE: remove Deno namespace support and noDenoNamespace option in Worker constructor (#3722) - BREAKING CHANGE: rename dial to connect and dialTLS to connectTLS (#3710) - feat: Add signal handlers (#3757) - feat: Implemented alternative open mode in files (#3119) - feat: Use globalThis to reference global scope (#3719) - feat: add AsyncUnref ops (#3721) - feat: stabilize net Addr (#3709) - fix: correct yaml's sortKeys type (#3708) - refactor: Improve path handling in permission checks (#3714) - refactor: Improve web workers (#3722, #3732, #3730, #3735) - refactor: Reduce number of ErrorKind variants (#3662) - refactor: Remove Isolate.shared_response_buf optimization (#3759) - upgrade: rusty_v8 (#3764, #3769, #3741) ### Install / Upgrade **With Shell:** ```sh curl -fsSL https://deno.land/x/install/install.sh | sh -s v0.31.0 ``` **With PowerShell:** ```powershell iwr https://deno.land/x/install/install.ps1 -useb -outf install.ps1; .\install.ps1 v0.31.0 ```
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