Deno v1.28.0 — 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 ⚡ Improvements 3 🔧 Bug Fixes 4

⚡ Executive Summary (TL;DR)

Deno v1.28.0. Source highlight: feat(lock): don't require --unstable for auto discovery (#16582)

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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(lock): don't require --unstable for auto discovery (#16582)
feat(npm): require --unstable for npm specifiers in remote modules (#16612)
feat(ops): implement fast lazy async ops (#16579)
feat(runtime): support creating workers with custom v8 snapshots (#16553)
feat(unstable): "Deno.Command()" API (#16516)
feat(unstable/npm): module graph derived npm specifier resolution order

⚡ Performance & Enhancements (3)

perf(core): minimize trivial heap allocations in `resolve_async_ops` (#16584)
perf(web): optimize single pass utf8 decoding (#16593)
perf: more efficient `deno cache` and npm package info usage (#16592)

🔧 Bug Fixes & Patches (4)

fix(ext/flash): revert #16284 and add test case (#16576)
fix(ext/response): make error, json, redirect enumerable (#16497)
fix(npm): disable npm specifiers in import.meta.resolve() (#16599)
fix: update latest release version after github release publish (#16603)

📄 View Raw Release Notes (Original Developer Log)

### 1.28.0 / 2022.11.13 - feat(lock): don't require --unstable for auto discovery (#16582) - feat(npm): require --unstable for npm specifiers in remote modules (#16612) - feat(ops): implement fast lazy async ops (#16579) - feat(runtime): support creating workers with custom v8 snapshots (#16553) - feat(unstable): "Deno.Command()" API (#16516) - feat(unstable/npm): module graph derived npm specifier resolution order (#16602) - feat: don't require --unstable flag for npm programs (#16520) - feat: remove --unstable flag requirement for npm: specifiers (#16473) - feat: stabilize Deno.bench() and 'deno bench' subcommand (#16485) - feat: stabilize Deno.networkInterfaces() (#16451) - feat: stabilize Deno.systemMemoryInfo() (#16445) - feat: stabilize Deno.uid() and Deno.gid() (#16424) - fix(ext/flash): revert #16284 and add test case (#16576) - fix(ext/response): make error, json, redirect enumerable (#16497) - fix(npm): disable npm specifiers in import.meta.resolve() (#16599) - fix: update latest release version after github release publish (#16603) - perf(core): minimize trivial heap allocations in `resolve_async_ops` (#16584) - perf(web): optimize single pass utf8 decoding (#16593) - perf: more efficient `deno cache` and npm package info usage (#16592)

← Older Version Deno v1.27.2 Newer Version → Deno v1.28.1