Deno v2.7.5 — 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 6 ⚡ Improvements 6 🔧 Bug Fixes 6

⚡ Executive Summary (TL;DR)

Deno v2.7.5. Source highlight: feat(coverage): add function coverage to summary and HTML reports (#32507)

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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 (6)

feat(coverage): add function coverage to summary and HTML reports (#32507)
feat(doc): support npm packages in `deno doc` (#32435)
feat(ext/node): add `node_api_create_object_with_properties` API (#31443)
feat(ext/node): implement KeyObject.toCryptoKey() and
feat(otel): allow feeding permission audit data into OTEL (#32501)
feat: --cpu-prof flags for CPU profiles (#31909)

⚡ Performance & Enhancements (6)

perf(ext/node): move most `fs.cp` logic to rust (#32580)
perf(lsp): drop jsx import source cache (#32506)
perf(npm): improve decompression speed more (#32547)
perf(npm): less syscalls in tarball extraction (#32541)
perf(npm): remove folder canonicalization in tarball extract (#32540)
perf(npm): use libdeflater and preallocate buffer (#32511)

🔧 Bug Fixes & Patches (6)

fix(console): prevent multi-line object values in console.table (#32604)
fix(core): switch to V8 Explicit microtask policy for correct nextTick
fix(ext/http): allow rejecting HTTP upgrades with non-101 status codes
fix(ext/napi): run async work execute callback on a worker thread (#32560)
fix(ext/node): add `node_api_create_property_key_(latin1/utf8)` (#32559)
fix(ext/node): add missing http2 header constants (#32611)

📄 View Raw Release Notes (Original Developer Log)

### 2.7.5 / 2026.03.11 - feat(coverage): add function coverage to summary and HTML reports (#32507) - feat(doc): support npm packages in `deno doc` (#32435) - feat(ext/node): add `node_api_create_object_with_properties` API (#31443) - feat(ext/node): implement KeyObject.toCryptoKey() and KeyObject.from(CryptoKey) (#32523) - feat(otel): allow feeding permission audit data into OTEL (#32501) - feat: --cpu-prof flags for CPU profiles (#31909) - fix(console): prevent multi-line object values in console.table (#32604) - fix(core): switch to V8 Explicit microtask policy for correct nextTick ordering (#32466) - fix(ext/http): allow rejecting HTTP upgrades with non-101 status codes (#32615) - fix(ext/napi): run async work execute callback on a worker thread (#32560) - fix(ext/node): add `node_api_create_property_key_(latin1/utf8)` (#32559) - fix(ext/node): add missing http2 header constants (#32611) - fix(ext/node): emit DEP0198 warning for SHAKE digests without outputLength (#32521) - fix(ext/node): emit correct error codes for unsupported PQC key types (#32533) - fix(ext/node): fix multiple DiffieHellman crypto bugs (#32531) - fix(ext/node): fix multiple node:dgram compatibility issues (#32520) - fix(ext/node): handle generateKeyPair 2-arg call and enable PQC tests (#32619) - fix(ext/node): implement ECDH.convertKey and fix related ECDH bugs (#32532) - fix(ext/node): implement `node:v8` heap APIs (#32483) - fix(ext/node): implement proper `resourceLimits` for `node:worker_threads` (#32430) - fix(ext/node): improve getCipherInfo and allow repeated Hmac digest() (#32522) - fix(ext/node): improve node:dns compat (#32536) - fix(ext/node): initialize debuglog testEnabled with safe default (#32598) - fix(ext/node): make TTY stdout/stderr indestructible (#32530) - fix(ext/node): make tty ReadStream/WriteStream callable without `new` (#32537) - fix(ext/node): multiple readline improvements (#32538) - fix(ext/node): napi_set_instance_data on exit (#32509) - fix(ext/node): rewrite http2 implementation (#32418) - fix(ext/node): run worker_threads eval code in sloppy mode (#32428) - fix(ext/node): support des-ede3-cbc cipher and allow Cipheriv/Decipheriv without new (#32519) - fix(ext/node): use max salt length as default for RSA-PSS signing (#32534) - fix(ext/otel): remove panicking unwraps in telemetry code (#32557) - fix(ext/websocket): handle non-ASCII bytes in WebSocket response headers (#32594) - fix(lsp): properly sync root files with tsgo (#32455) - fix(lsp): tsgo scope attribution for asset files (#32608) - fix(napi): remove unimplemented Node-API symbols from napi_sys (#32593) - fix(npm): memoize peer cache hit checks to prevent combinatorial explosion (#32609) - fix(npm): support npmrc email authorization (#32616) - fix: ensure binaries distributed in `@deno/...` npm packages are exectuable (#32581) - fix: flush CPU profile and coverage data on Deno.exit() (#32591) - fix: normalize `capture` to boolean in `removeEventListener` options (#32508) - fix: prevent panic on dynamic import with non-string error name (#32498) - fix: set `process.features.openssl_is_boringssl` to `true` (#32512) - fix: support value substitution when loading environment variable files (#32495) - perf(ext/node): move most `fs.cp` logic to rust (#32580) - perf(lsp): drop jsx import source cache (#32506) - perf(npm): improve decompression speed more (#32547) - perf(npm): less syscalls in tarball extraction (#32541) - perf(npm): remove folder canonicalization in tarball extract (#32540) - perf(npm): use libdeflater and preallocate buffer (#32511)

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