Impact Score: 5/10
Deno v1.29.4 — 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.
⚡ Executive Summary (TL;DR)
Deno v1.29.4. Source highlight: feat(core): Reland support for async ops in realms (#17204)
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 (1)
- feat(core): Reland support for async ops in realms (#17204)
🔧 Bug Fixes & Patches (6)
- fix(cli/fmt): show filepath for InvalidData error (#17361)
- fix(core): Add `Generator` and `AsyncGenerator` to promordials (#17241)
- fix(ext/fetch) Fix request clone error in flash server (#16174)
- fix(ext/fetch): remove Response.trailer from types (#17284)
- fix(ext/ffi): use SafeMap in getTypeSizeAndAlignment (#17305)
- fix(ext/flash): Correctly handle errors for chunked responses (#17303)
📄 View Raw Release Notes (Original Developer Log)
### 1.29.4 / 2023.01.16
- feat(core): Reland support for async ops in realms (#17204)
- fix(cli/fmt): show filepath for InvalidData error (#17361)
- fix(core): Add `Generator` and `AsyncGenerator` to promordials (#17241)
- fix(ext/fetch) Fix request clone error in flash server (#16174)
- fix(ext/fetch): remove Response.trailer from types (#17284)
- fix(ext/ffi): use SafeMap in getTypeSizeAndAlignment (#17305)
- fix(ext/flash): Correctly handle errors for chunked responses (#17303)
- fix(ext/flash): Fix panic when JS caller doesn't consume request body (#16173)
- fix(ext/flash): Fix typo in 'chunked' flash ops (#17302)
- fix(napi): allow cleanup hook to remove itself (#17402)
- fix(napi): correct arguments for napi_get_typedarray_info (#17306)
- fix(napi): functions related to errors (#17370)
- fix(napi): update node version to lts (#17399)
- fix(npm): handle an npm package that has itself as a dependency (#17425)
- fix(npm): use original node regex in npm resolution (#17404)
- fix(ops): disallow memory slices as inputs to async ops (#16738)
- fix(repl): improve validator to mark more code as incomplete (#17443)
- fix(runtime/fs): preserve permissions in copyFileSync for macOS (#17412)
- fix(runtime/os): use GetPerformanceInfo for swap info on Windows (#17433)