Deno v1.43.2 — 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 🔧 Bug Fixes 6

⚡ Executive Summary (TL;DR)

Deno v1.43.2. Source highlight: feat(runtime): allow adding custom extensions to snapshot (#23569)

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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(runtime): allow adding custom extensions to snapshot (#23569)

🔧 Bug Fixes & Patches (6)

fix(compile): relative permissions should be retained as relative (#23719)
fix(ext/node): check resource exists before close (#23655)
fix(ext/node): don't rely on Deno.env to read NODE_DEBUG (#23694)
fix(ext/node): napi_get_element and napi_set_element work with objects
fix(ext/node): support delete process.env.var (#23647)
fix(ext/web): properly handle `Blob` case for `createImageBitmap` (#23518)

📄 View Raw Release Notes (Original Developer Log)

### 1.43.2 / 2024.05.08 - feat(runtime): allow adding custom extensions to snapshot (#23569) - fix(compile): relative permissions should be retained as relative (#23719) - fix(ext/node): check resource exists before close (#23655) - fix(ext/node): don't rely on Deno.env to read NODE_DEBUG (#23694) - fix(ext/node): napi_get_element and napi_set_element work with objects (#23713) - fix(ext/node): support delete process.env.var (#23647) - fix(ext/web): properly handle `Blob` case for `createImageBitmap` (#23518) - fix(ext/webgpu): correctly validate GPUExtent3D, GPUOrigin3D, GPUOrigin2D & GPUColor (#23413) - fix(fmt/js): `else` was moved to wrong `if` sometimes when formatting minified code (#23706) - fix(jsr): panic when importing jsr package with deps via https (#23728) - fix(lsp): Catch cancellation exceptions thrown by TSC, stop waiting for TS result upon cancellation (#23645) - fix(lsp): Pass diagnostic codes to TSC as numbers (#23720) - fix(lsp): always cache all npm packages (#23679) - fix(lsp): handle multiline semantic tokens (#23691) - fix(publish): public api - trace parent classes & interfaces when following a method (#23661) - fix(runtime): allow r/w access to /etc without --allow-all (#23718) - fix(test): proper type checking for files with doc tests (#23654) - fix(workers): `importScripts` concurrently and use a new `reqwest::Client` per importScripts (#23699) - fix: DOMException doesn't throw on __callSitesEvals (#23729) - fix: upgrade TypeScript from 5.4.3 to 5.4.5 (#23740)

← Older Version Deno v1.43.1 Newer Version → Deno v1.43.3