Deno v0.8.0 — 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 1 🔧 Bug Fixes 4

⚡ Executive Summary (TL;DR)

Deno v0.8.0. Source highlight: feat: Add 'bundle' subcommand. (#2467)

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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: Add 'bundle' subcommand. (#2467)
feat: Handle compiler diagnostics in Rust (#2445)
feat: add deno fmt --stdout option (#2439)
feat: CLI defaults to run subcommand (#2451)
encoding/csv: add easy api (denoland/deno_std#458)
ws: Add sec-websocket-version to handshake header (denoland/deno_std#468)

⚡ Performance & Enhancements (1)

perf: Create fewer threads (#2476)

🔧 Bug Fixes & Patches (4)

fix: Compiler exit before emit if preEmitDiagnostics found (#2441)
fix: Deno.core.evalContext & Deno.core.print (#2465)
fix: Improve setup.py for package managers (#2423)
fix: Use body when Request instance is passed to fetch (#2435)

📄 View Raw Release Notes (Original Developer Log)

### Changes In deno: - feat: Add 'bundle' subcommand. (#2467) - feat: Handle compiler diagnostics in Rust (#2445) - feat: add deno fmt --stdout option (#2439) - feat: CLI defaults to run subcommand (#2451) - fix: Compiler exit before emit if preEmitDiagnostics found (#2441) - fix: Deno.core.evalContext & Deno.core.print (#2465) - fix: Improve setup.py for package managers (#2423) - fix: Use body when Request instance is passed to fetch (#2435) - perf: Create fewer threads (#2476) - upgrade: TypeScript to 3.5.1 (#2437) - upgrade: std/[email protected] to std/[email protected] (#2425) In deno_std: - ci: Check file changes during test (denoland/deno_std#476) - ci: Implement strict mode (denoland/deno_std#453) - ci: Make CI config DRY (denoland/deno_std#470) - encoding/csv: add easy api (denoland/deno_std#458) - io: make port BufReader.readByte() return `number | EOF`(denoland/deno_std#472) - ws: Add sec-websocket-version to handshake header (denoland/deno_std#468) ### Install / Upgrade **With Shell:** ```sh curl -fsSL https://deno.land/x/install/install.sh | sh -s v0.8.0 ``` **With PowerShell:** ```powershell iwr https://deno.land/x/install/install.ps1 -useb -outf install.ps1; .\install.ps1 v0.8.0 ```

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