Deno v2.7.7 — 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

⚡ Improvements 1 🔧 Bug Fixes 6

⚡ Executive Summary (TL;DR)

Deno v2.7.7. Source highlight: fix(core): implement select fallback on macOS (#32812)

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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.

⚡ Performance & Enhancements (1)

perf(ext/webidl): optimize dictionary converters (#32729)

🔧 Bug Fixes & Patches (6)

fix(core): implement select fallback on macOS (#32812)
fix(ext/node): add disabled process function stubs in worker threads (#32809)
fix(ext/node): add key/IV length validation for aes-128-cbc and ecb cipher
fix(ext/node): improve node:dns module compatibility (#32704)
fix(ext/node): improve process.title and support --title flag (#32201)
fix(ext/node): set kLastWriteWasAsync in JS write path to prevent double

📄 View Raw Release Notes (Original Developer Log)

### 2.7.7 / 2026.03.19 - fix(core): implement select fallback on macOS (#32812) - fix(ext/node): add disabled process function stubs in worker threads (#32809) - fix(ext/node): add key/IV length validation for aes-128-cbc and ecb cipher modes (#32824) - fix(ext/node): improve node:dns module compatibility (#32704) - fix(ext/node): improve process.title and support --title flag (#32201) - fix(ext/node): set kLastWriteWasAsync in JS write path to prevent double callback (#32814) - fix(ext/node): skip normalization in path.win32.join for reserved device names (#32808) - fix(ext/node): support interface option for IPv6 multicast membership (#32754) - fix(ext/node): use constant-time comparison for GCM auth tag verification (#32817) - fix(ext/node): validate process.exitCode and fix process constructor name (#32806) - fix(watch): support graceful shutdown via SIGTERM dispatch (#32564) - perf(ext/webidl): optimize dictionary converters (#32729)

← Older Version Deno v2.7.6 Newer Version → Deno v2.7.8