Deno v0.19.0 — 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 🔧 Bug Fixes 6

⚡ Executive Summary (TL;DR)

Deno v0.19.0. Source highlight: feat: Add Deno.dialTLS()

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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 Deno.dialTLS()
feat: Make deno_cli installable via crates.io (#2946)
feat: Remove test.py, use cargo test as test frontend (#2967)
feat: dial/listen API change (#3000)
feat: parallelize downloads from TS compiler (#2949)
feat: Implement BufReader.readString (denoland/deno_std#607)

🔧 Bug Fixes & Patches (6)

fix: Make `window` compatible with ts 3.6 (#2984)
fix: Remove some non-standard web API constructors (#2970)
fix: debug logging in runtime/compiler (#2953)
fix: flag parsing of config file (#2996)
fix: reschedule global timer if it fires earlier than expected (#2989)
fix: type directive parsing (#2954)

📄 View Raw Release Notes (Original Developer Log)

### Changes In deno: - feat: Add Deno.dialTLS() - feat: Make deno_cli installable via crates.io (#2946) - feat: Remove test.py, use cargo test as test frontend (#2967) - feat: dial/listen API change (#3000) - feat: parallelize downloads from TS compiler (#2949) - fix: Make `window` compatible with ts 3.6 (#2984) - fix: Remove some non-standard web API constructors (#2970) - fix: debug logging in runtime/compiler (#2953) - fix: flag parsing of config file (#2996) - fix: reschedule global timer if it fires earlier than expected (#2989) - fix: type directive parsing (#2954) - upgrade: V8 to 7.9.110 for top-level-await (#3015) - upgrade: to TypeScript 3.6.3 (#2969) In deno_std: - feat: Implement BufReader.readString (denoland/deno_std#607) - fix: TOML's key encoding (denoland/deno_std#612) - fix: remove //testing/main.ts (denoland/deno_std#605) - fix: types in example_client for ws module (denoland/deno_std#609) - upgrade: mime-db to commit c50e0d1 (denoland/deno_std#608) ### Install / Upgrade **With cargo:** ```sh cargo install deno_cli --version 0.19.0 ``` **With Shell:** ```sh curl -fsSL https://deno.land/x/install/install.sh | sh -s v0.19.0 ``` **With PowerShell:** ```powershell iwr https://deno.land/x/install/install.ps1 -useb -outf install.ps1; .\install.ps1 v0.19.0 ```

← Older Version Deno v0.18.0 Newer Version → Deno v0.20.0