Deno v2.1.8 — 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 3 🔧 Bug Fixes 6

⚡ Executive Summary (TL;DR)

Deno v2.1.8. Source highlight: feat(unstable): support https otlp endpoints (#27743)

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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): support https otlp endpoints (#27743)

⚡ Performance & Enhancements (3)

perf(lsp): cache completion item resolution during request (#27831)
perf(node_resolver): reduce url to/from path conversions (#27839)
perf: full LTO in sysroot (#27771)

🔧 Bug Fixes & Patches (6)

fix(check): better handling of TypeScript in npm packages for type checking
fix(check): compiler options from workspace members (#27785)
fix(core): Fix `create_stack_trace` from empty trace (#27873)
fix(core): handle dyn imports exceeding call stack size (#27825)
fix(ext/crypto): export private x25519 JWK key (#27828)
fix(ext/crypto): fix jwk key_ops validation (#27827)

📄 View Raw Release Notes (Original Developer Log)

### 2.1.8 / 2025.01.30 - feat(unstable): support https otlp endpoints (#27743) - fix(check): better handling of TypeScript in npm packages for type checking (#27853) - fix(check): compiler options from workspace members (#27785) - fix(core): Fix `create_stack_trace` from empty trace (#27873) - fix(core): handle dyn imports exceeding call stack size (#27825) - fix(ext/crypto): export private x25519 JWK key (#27828) - fix(ext/crypto): fix jwk key_ops validation (#27827) - fix(ext/fetch): update h2 to fix sending a PROTOCOL_ERROR instead of REFUSED_STREAM when receiving oversized headers (#27531) - fix(ext/node): clear tz cache when setting process.env.TZ (#27826) - fix(ext/node): do not apply socket-init-workaround to ipc socket (#27779) - fix(ext/node): fix async variant of brotliDecompress (#27815) - fix(ext/node): fix formatting of debug logs (#27772) - fix(ext/node): fix panic when invalid AES GCM key size (#27818) - fix(ext/node): implement X509Certificate#checkHost (#27821) - fix(ext/node): implement `aes-128-ctr`, `aes-192-ctr`, and `aes-256-ctr` (#27630) - fix(ext/node): implement `crypto.hash` (#27858) - fix(ext/node): npm:mqtt compatibility (#27792) - fix(ext/node): reference error in zlib.crc32 (#27777) - fix(ext/node): scrypt panic when `log_n` > 64 (#27816) - fix(init): correct dev task for --lib (#27860) - fix(install/global): warn about not including auto-discovered config file (#27745) - fix(lsp): ignore errors on ambient module imports (#27855) - fix(lsp): silence debug error for 'move to a new file' action (#27780) - fix(node): align type stripping in node_modules error message with Node (#27809) - fix(npmrc): merge `.npmrc` in user's homedir and project (#27119) - fix(process/windows): correct command resolution when PATH env var not uppercase (#27846) - fix(publish): unfurl sloppy imports in d.ts files and type imports (#27793) - fix(types): `Deno.readDirSync`'s type returns an `IteratorObject` (#27805) - fix: do not log cache creation failure on readonly file system (#27794) - perf(lsp): cache completion item resolution during request (#27831) - perf(node_resolver): reduce url to/from path conversions (#27839) - perf: full LTO in sysroot (#27771)

← Older Version Deno v2.1.7 Newer Version → Deno v2.1.9