Deno v1.26.1 — 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.

Compatibility not verified — check source notes

📄 .MD

✨ Features 2 ⚡ Improvements 2 🔧 Bug Fixes 6

⚡ Executive Summary (TL;DR)

Deno v1.26.1. Source highlight: feat(npm): implement Node API (#13633)

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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 (2)

feat(npm): implement Node API (#13633)
feat(unstable): add support for npm specifier cli arguments for 'deno cache'

⚡ Performance & Enhancements (2)

perf(ext/fetch): consume body using ops (#16038)
perf: node cjs & esm analysis cache (#16097)

🔧 Bug Fixes & Patches (6)

fix(build): don't export all symbols to dynamic symbol table (#16171)
fix(ext/cache): acquire reader lock before async op (#16126)
fix(ext/cache): close resource on error (#16129)
fix(ext/cache): prevent cache insert if body is not fully written (#16138)
fix(ext/crypto): ECDH and X25519 non byte length and 0 length fixes (#16146)
fix(ext/crypto): curve25519 import export (#16140)

📄 View Raw Release Notes (Original Developer Log)

### 1.26.1 / 2022.10.06 - feat(npm): implement Node API (#13633) - feat(unstable): add support for npm specifier cli arguments for 'deno cache' (#16141) - fix(build): don't export all symbols to dynamic symbol table (#16171) - fix(ext/cache): acquire reader lock before async op (#16126) - fix(ext/cache): close resource on error (#16129) - fix(ext/cache): prevent cache insert if body is not fully written (#16138) - fix(ext/crypto): ECDH and X25519 non byte length and 0 length fixes (#16146) - fix(ext/crypto): curve25519 import export (#16140) - fix(ext/crypto): deriveBits for ECDH not taking length into account (#16128) - fix(ext/crypto): ecdh spki key import/export roundtrip (#16152) - fix(ext/crypto): fix importKey error when leading zeroes (#16009) - fix(ext/crypto): interoperable import/export (#16153) - fix(ext/crypto): use correct handle for public keys (#16099) - fix(ext/fetch): `Body#bodyUsed` for static body (#16080) - fix(ext/flash): Avoid sending Content-Length when status code is 204 (#15901) - fix(node): add dns/promises and stream/consumers (#16169) - fix(npm): better error is version is specified after subpath (#16131) - fix(npm): handle json files in require (#16125) - fix(npm): panic on invalid package name (#16123) - fix(runtime): no FastStream for unrefable streams (#16095) - fix(serde_v8): Implement MapAccess for StructAccess (#15962) - fix(serde_v8): serialize objects with numeric keys correctly (#15946) - fix: move Deno.hostname() from denoNsUnstable to denoNs (#16086) - lsp: use deno:/asset instead of deno:asset (#16023) - perf(ext/fetch): consume body using ops (#16038) - perf: node cjs & esm analysis cache (#16097)

← Older Version Deno v1.26.0 Newer Version → Deno v1.26.2