Deno v2.9.8 — 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: 2026-10-31.

Compatibility not verified — check source notes

📄 .MD

🔧 Bug Fixes 6

⚡ Executive Summary (TL;DR)

Deno v2.9.8. Source highlight: fix(compile): check read permission for dynamically imported local files

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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.

🔧 Bug Fixes & Patches (6)

fix(compile): check read permission for dynamically imported local files
fix(completions): complete script paths for bare deno run in zsh (#36976)
fix(core): keep op contexts alive until the isolate is disposed (#37026)
fix(coverage): skip the V8 code cache while collecting coverage (#36901)
fix(ext/fetch): bump hyper-util to 0.1.21 and hyper to 1.11.1 to cancel idle
fix(ext/napi): check napi_create_dataview bounds for overflow (#36962)

📄 View Raw Release Notes (Original Developer Log)

### 2.9.8 / 2026.10.21 - fix(compile): check read permission for dynamically imported local files (#36925) - fix(completions): complete script paths for bare deno run in zsh (#36976) - fix(core): keep op contexts alive until the isolate is disposed (#37026) - fix(coverage): skip the V8 code cache while collecting coverage (#36901) - fix(ext/fetch): bump hyper-util to 0.1.21 and hyper to 1.11.1 to cancel idle interval when pool empties (#36968) - fix(ext/napi): check napi_create_dataview bounds for overflow (#36962) - fix(ext/napi): ignore the callback return value while an exception is pending (#36942) - fix(ext/node): align X.509v1 certificate handling with OpenSSL (#36933) - fix(ext/node): mock.reset() restores mock.method() implementations (#36886) - fix(ext/node): support assert message functions and format arguments (#36944) - fix(npm): validate package link names (#37047) - fix(tls): distrust compromised eMudhra certificate authorities (#37046) - fix: bump rand 0.9.x to patched version

← Older Version Deno v2.9.7

Newer Version → Latest Tracked Version ✓