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Deno v0.29.0stable Released Jan 09, 2020
⚠️ Breaking Change Impact Score: 7/10

Deno v0.29.0 — 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 xeval subcommand (#3630)
  • - BREAKING CHANGE script arguments should come after '--' (#3621)
  • - BREAKING CHANGE Deno.mkdir should conform to style guide
  • - BREAKING CHANGE Deno.args only includes script args (#3628)
  • - BREAKING CHANGE Rename crates: 'deno' to 'deno_core' and 'deno_cli' to 'deno'
Read the original context ↗
Source flags breaking changes — review applicability
📄 .MD
✨ Features 2 ⚡ Improvements 1 🔧 Bug Fixes 2 ⚠️ Breaking & Deprecations 5
⚡ Executive Summary (TL;DR)

Deno v0.29.0. Source highlight: BREAKING CHANGE Remove xeval subcommand (#3630)

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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 (5)

  • - BREAKING CHANGE Remove xeval subcommand (#3630)
  • - BREAKING CHANGE script arguments should come after '--' (#3621)
  • - BREAKING CHANGE Deno.mkdir should conform to style guide
  • - BREAKING CHANGE Deno.args only includes script args (#3628)
  • - BREAKING CHANGE Rename crates: 'deno' to 'deno_core' and 'deno_cli' to 'deno'

✨ New Features & Capabilities (2)

  • feat: Add Deno.create (#3629)
  • feat: Add compiler API (#3442)

⚡ Performance & Enhancements (1)

  • perf: TextEncoder.encode improvement (#3596, #3589)

🔧 Bug Fixes & Patches (2)

  • fix(ws): Handshake with correctly empty search string (#3587)
  • fix(yaml): Export parseAll (#3592)
📄 View Raw Release Notes (Original Developer Log)
### Changes - BREAKING CHANGE Remove xeval subcommand (#3630) - BREAKING CHANGE script arguments should come after '--' (#3621) - BREAKING CHANGE Deno.mkdir should conform to style guide (#3617) - BREAKING CHANGE Deno.args only includes script args (#3628) - BREAKING CHANGE Rename crates: 'deno' to 'deno_core' and 'deno_cli' to 'deno' (#3600) - feat: Add Deno.create (#3629) - feat: Add compiler API (#3442) - fix(ws): Handshake with correctly empty search string (#3587) - fix(yaml): Export parseAll (#3592) - perf: TextEncoder.encode improvement (#3596, #3589) - refactor: Replace libdeno with rusty_v8 (#3556, #3601, #3602, #3605, #3611, #3613, #3615) - upgrade: V8 8.1.108 (#3623) ### Install / Upgrade **With Shell:** ```sh curl -fsSL https://deno.land/x/install/install.sh | sh -s v0.29.0 ``` **With PowerShell:** ```powershell iwr https://deno.land/x/install/install.ps1 -useb -outf install.ps1; .\install.ps1 v0.29.0 ```
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