Impact Score: 5/10
Deno v1.30.1 — 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 v1.30.1. Source highlight: Revert "fix(watch): preserve `ProcState::file_fetcher` between restarts
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(ops): Remove unnecessary fast call fallback options usage (#17585)
🔧 Bug Fixes & Patches (6)
- Revert "fix(watch): preserve `ProcState::file_fetcher` between restarts
- fix(core): Add lint check for core (#17223)
- fix(ext): internal `structuredClone` for `ArrayBuffer` and `TypedArray`
- fix(fmt): semiColons: false - handle prop with following generator and do
- fix(install): tsconfig.json -> deno.json for config file suffix (#17573)
- fix(lockfile): emit trailing newline (#17618)
📄 View Raw Release Notes (Original Developer Log)
### 1.30.1 / 2023.02.02
- Revert "fix(watch): preserve `ProcState::file_fetcher` between restarts
(#15466) (#17591)
- fix(core): Add lint check for core (#17223)
- fix(ext): internal `structuredClone` for `ArrayBuffer` and `TypedArray`
subclasses (#17431)
- fix(fmt): semiColons: false - handle prop with following generator and do
while with no block body (#17567)
- fix(install): tsconfig.json -> deno.json for config file suffix (#17573)
- fix(lockfile): emit trailing newline (#17618)
- fix(lsp): update document dependencies on configuration change (#17556)
- fix(napi): guard threadsafe function counters behind a mutex (#17552)
- fix(napi): remove wrong length check in napi_create_function (#17614)
- fix(napi): return node globalThis from napi_get_global (#17613)
- fix(repl): handle @types/node not being cached in the repl (#17617)
- fix(upgrade): ensure temp dir cleanup on failure (#17535)
- fix: ensure "fs" -> "node:fs" error/quick fix works when user has import map
(#17566)
- perf(ops): Remove unnecessary fast call fallback options usage (#17585)