Deno v1.31.2 — 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.

Compatibility not verified — check source notes

📄 .MD

✨ Features 5 ⚡ Improvements 4 🔧 Bug Fixes 6

⚡ Executive Summary (TL;DR)

Deno v1.31.2. Source highlight: feat(core): prevent isolate drop for CLI main worker (#18059)

Visit Deno Official Site ↗ Official Release Source ↗ All Deno Releases 📡 Deno RSS

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 (5)

feat(core): prevent isolate drop for CLI main worker (#18059)
feat(ext/ffi): Make External pointers keep reference to V8 buffer (#17955)
feat(ops): reland fast zero copy string arguments (#17996)
feat(ops): relational ops (#18023)
perf: don't add unload event listener (#18082)

⚡ Performance & Enhancements (4)

perf(core): over-allocate in ModuleMap when running from snapshot (#18083)
perf(ext/node): improve createHash performance (#18033)
perf: move runtime bootstrap code to snapshot time (#18062)
perf: move setting up Deno namespace to snapshot time (#18067)

🔧 Bug Fixes & Patches (6)

fix(check): include dts files in tsc roots (#18026)
fix(cli,ext/web): Upgrading uuid from =1.1.2 to 1.3.0 (#17963)
fix(core): introduce `SafeRegExp` to primordials (#17592)
fix(ext/crypto): correctly limit ECDSA and hash algorithms (#18030)
fix(ext/ffi): Remove deno_core::OpState qualifiers, fix ops returning pointer
fix(ext/node): remove unused _hex module (#18045)

📄 View Raw Release Notes (Original Developer Log)

### 1.31.2 / 2023.03.10 - feat(core): prevent isolate drop for CLI main worker (#18059) - feat(ext/ffi): Make External pointers keep reference to V8 buffer (#17955) - feat(ops): reland fast zero copy string arguments (#17996) - feat(ops): relational ops (#18023) - fix(check): include dts files in tsc roots (#18026) - fix(cli,ext/web): Upgrading uuid from =1.1.2 to 1.3.0 (#17963) - fix(core): introduce `SafeRegExp` to primordials (#17592) - fix(ext/crypto): correctly limit ECDSA and hash algorithms (#18030) - fix(ext/ffi): Remove deno_core::OpState qualifiers, fix ops returning pointer defaults (#17959) - fix(ext/node): remove unused _hex module (#18045) - fix(ext/node): util.types.isSharedArrayBuffer (#17836) - fix(ext/webstorage): check size of inputs before insert (#18087) - fix(lockfile): don't touch lockfile is npm specifiers are identical (#17973) - fix(npm): improve peer dependency resolution with circular dependencies (#18069) - fix(prompt): better output with control chars (#18108) - fix(rumtime): Add `Deno.` prefix for registered symbols (#18086) - fix(runtime/windows): ensure `Deno.stdin.setRaw(false)` properly disables raw mode (#17983) - fix: Split extension registration and snapshotting (#18098) - fix: attempt to only allow one deno process to update the node_modules folder at a time (#18058) - fix: lazily surface errors in package.json deps parsing (#17974) - perf(core): over-allocate in ModuleMap when running from snapshot (#18083) - perf(ext/node): improve createHash performance (#18033) - perf: don't add unload event listener (#18082) - perf: move runtime bootstrap code to snapshot time (#18062) - perf: move setting up Deno namespace to snapshot time (#18067)

← Older Version Deno v1.31.1 Newer Version → Deno v1.31.3