Deno v1.43.4 — 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

⚡ Improvements 3 🔧 Bug Fixes 6

⚡ Executive Summary (TL;DR)

Deno v1.43.4. Source highlight: fix(cli): panic with `deno coverage` (#23353)

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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.

⚡ Performance & Enhancements (3)

perf(compile): Do not checksum eszip content (#23839)
perf(jsr): download metadata files as soon as possible and in parallel
perf(lsp): Cache semantic tokens for open documents (#23799)

🔧 Bug Fixes & Patches (6)

fix(cli): panic with `deno coverage` (#23353)
fix(doc): --lint - private ref diagnostic was displaying incorrect information
fix(doc/publish): support expando properties (#23795)
fix(emit): regression - keep comments in emit (#23815)
fix(ext/node): export geteuid from node:process (#23840)
fix(ext/node): fix grpc error_handling example (#23755)

📄 View Raw Release Notes (Original Developer Log)

### 1.43.4 / 2024.05.16 - fix(cli): panic with `deno coverage` (#23353) - fix(doc): --lint - private ref diagnostic was displaying incorrect information (#23834) - fix(doc/publish): support expando properties (#23795) - fix(emit): regression - keep comments in emit (#23815) - fix(ext/node): export geteuid from node:process (#23840) - fix(ext/node): fix grpc error_handling example (#23755) - fix(ext/node): homedir() `getpwuid`/`SHGetKnownFolderPath` fallback (#23841) - fix(ext/node): process.uptime works without this (#23786) - fix(ext/web): update ongoing promise in async iterator `return()` method (#23642) - fix(lsp): respect types dependencies for tsc roots (#23825) - fix(lsp): show reference code lens on methods (#23804) - fix(node): error when throwing `FS_EISDIR` (#23829) - fix(node): seperate worker module cache (#23634) - fix(node): stub `AsyncResource.emitDestroy()` (#23802) - fix(node): wrong `worker_threads.terminate()` return value (#23803) - fix(npm): handle null fields in npm registry JSON (#23785) - fix(npm): make tarball extraction more reliable (#23759) - fix(publish): always include config file when publishing (#23797) - fix(publish): error for missing version constraints on dry-publish instead of just publish (#23798) - fix(runtime): output to stderr with colors if a tty and stdout is piped (#23813) - fix: Add missing `"junction"` type for `SymlinkOptions.types` (#23756) - fix: update swc_ecma_parser to 0.114.1 (#23816) - fix: widen aarch64 linux minimum GLIBC version by improving sysroot build (#23791) - perf(compile): Do not checksum eszip content (#23839) - perf(jsr): download metadata files as soon as possible and in parallel (#23836) - perf(lsp): Cache semantic tokens for open documents (#23799)

← Older Version Deno v1.43.3 Newer Version → Deno v1.43.5