Deno v1.23.2 — 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 1 ⚡ Improvements 4 🔧 Bug Fixes 6

⚡ Executive Summary (TL;DR)

Deno v1.23.2. Source highlight: feat(unstable/ffi): thread safe callbacks (#14942)

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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 (1)

feat(unstable/ffi): thread safe callbacks (#14942)

⚡ Performance & Enhancements (4)

perf(ext/ffi): optimize synchronous calls (#14945)
perf(ext/web): avoid reallocations in op_base64_atob (#15018)
perf(ext/web): use base64-simd for atob/btoa (#14992)
perf(serde_v8): smallvec ByteString (#15008)

🔧 Bug Fixes & Patches (6)

fix(core): don't panic on non-existent cwd (#14957)
fix(docs): --watch arg is stable (#14970)
fix(dts/ffi): non-exact types break FFI inference (#14968)
fix(ext/crypto): add EcdhKeyDeriveParams to deriveKey types (#15005)
fix(ext/ffi): empty buffers error with index out of bounds on FFI (#14997)
fix(ext/web): remove `ErrorEventInit`'s error default (#14809)

📄 View Raw Release Notes (Original Developer Log)

### 1.23.2 / 2022.06.30 - feat(unstable/ffi): thread safe callbacks (#14942) - fix(core): don't panic on non-existent cwd (#14957) - fix(docs): --watch arg is stable (#14970) - fix(dts/ffi): non-exact types break FFI inference (#14968) - fix(ext/crypto): add EcdhKeyDeriveParams to deriveKey types (#15005) - fix(ext/ffi): empty buffers error with index out of bounds on FFI (#14997) - fix(ext/web): remove `ErrorEventInit`'s error default (#14809) - fix(lsp): restart TS language service when caching dependencies (#14979) - fix(modules): immediately resolve follow-up dyn imports to a dyn imported module (#14958) - fix(runtime): derive default for deno_runtime::ExitCode (#15017) - fix(task): remove --no-config as task subcommand argument (#14983) - fix(test): typo ('finsihed') if text decoder not closed during test (#14996) - fix(vendor): ignore import map in output directory instead of erroring (#14998) - fix: don't error if Deno.bench() or Deno.test() are used in run subcommand (#14946) - perf(ext/ffi): optimize synchronous calls (#14945) - perf(ext/web): avoid reallocations in op_base64_atob (#15018) - perf(ext/web): use base64-simd for atob/btoa (#14992) - perf(serde_v8): smallvec ByteString (#15008)

← Older Version Deno v1.23.1 Newer Version → Deno v1.23.3