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Deno v2.4.2stable Released Jul 16, 2025
Impact Score: 5/10

Deno v2.4.2 — 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
🔧 Bug Fixes 6
⚡ Executive Summary (TL;DR)

Deno v2.4.2. Source highlight: fix(bundle): default "jsxImportSource" to "react" (#30082)

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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.

🔧 Bug Fixes & Patches (6)

  • fix(bundle): default "jsxImportSource" to "react" (#30082)
  • fix(check): temporarily ignore ERR_TYPES_NOT_FOUND (#29926)
  • fix(ext/node): don't throw error on invalid path input on `exists` and
  • fix(ext/node): validate path parameters on `link` and `linkSync` (#30061)
  • fix(lint): do not panic for many overlapping lint fixes (#30104)
  • fix(lsp): tsconfig features for 'deno check' parity (#30007)
📄 View Raw Release Notes (Original Developer Log)
### 2.4.2 / 2025.07.16 - fix(bundle): default "jsxImportSource" to "react" (#30082) - fix(check): temporarily ignore ERR_TYPES_NOT_FOUND (#29926) - fix(ext/node): don't throw error on invalid path input on `exists` and `existsSync` (#29971) - fix(ext/node): validate path parameters on `link` and `linkSync` (#30061) - fix(lint): do not panic for many overlapping lint fixes (#30104) - fix(lsp): tsconfig features for 'deno check' parity (#30007) - fix(tsconfig): prioritize deno.json if it has compiler options (#30056) - fix(tsconfig): use tsc defaults for 'strict' and 'noImplicitOverride' (#30045) - fix(unstable): support importing files in npm packages as bytes and text (#30065) - fix: `global` global should be writeable (#30032) - fix: early init logging (#30034) - fix: new signal handling (#30029) - fix: upgrade deno_core to 0.352.1 (#30119)
← Older Version Deno v2.2.14