Impact Score: 5/10
Deno v1.33.2 — 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 v1.33.2. Source highlight: fix(core): Use primordials for methods (#18839)
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 (6)
- perf(core): async op pseudo-codegen and performance work (#18887)
- perf(core): use jemalloc for V8 array buffer allocator (#18875)
- perf(ext/web): fast path for ws events (#18905)
- perf: lazily create RootCertStore (#18938)
- perf: lazily retrieve ppid (#18940)
- perf: use jemalloc as global allocator (#18957)
🔧 Bug Fixes & Patches (6)
- fix(core): Use primordials for methods (#18839)
- fix(core): allow esm extensions not included in snapshot (#18980)
- fix(core): rebuild when JS sources for snapshotting change (#18976)
- fix(ext/io) several sync fs fixes (#18886)
- fix(ext/kv): KvU64#valueOf and KvU64 inspect (#18656)
- fix(ext/kv): stricter structured clone serializer (#18914)
📄 View Raw Release Notes (Original Developer Log)
### 1.33.2 / 2023.05.04
- fix(core): Use primordials for methods (#18839)
- fix(core): allow esm extensions not included in snapshot (#18980)
- fix(core): rebuild when JS sources for snapshotting change (#18976)
- fix(ext/io) several sync fs fixes (#18886)
- fix(ext/kv): KvU64#valueOf and KvU64 inspect (#18656)
- fix(ext/kv): stricter structured clone serializer (#18914)
- fix(ext/kv): throw on the Kv constructor (#18978)
- fix(ext/node): add missing `release` property to node's `process` (#18923)
- fix(ext/url): throw `TypeError` for empty argument (#18896)
- fix(ext/websocket): update fastwebsockets to 0.3.1 (#18916)
- fix(fmt/json): support formatting number with exponent and no sign (#18894)
- fix(node/http): Request.setTimeout(0) should clear (#18949)
- fix(npm): canonicalize filename before returning (#18948)
- fix(npm): canonicalize search directory when looking for package.json (#18981)
- fix(test): disable preventDefault() for beforeunload event (#18911)
- perf(core): async op pseudo-codegen and performance work (#18887)
- perf(core): use jemalloc for V8 array buffer allocator (#18875)
- perf(ext/web): fast path for ws events (#18905)
- perf(ext/websocket): use internal dispatch for msg events (#18904)
- perf: lazily create RootCertStore (#18938)
- perf: lazily retrieve ppid (#18940)
- perf: use jemalloc as global allocator (#18957)