⚠️ Breaking Change
Impact Score: 7/10
Deno v0.30.0 — 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.
Breaking-change evidence from the source
- BREAKING CHANGE Revert "feat(flags): script arguments come after '--'" (#3681)
⚡ Executive Summary (TL;DR)
Deno v0.30.0. Source highlight: BREAKING CHANGE Revert "feat(flags): script arguments come after '--'" (#3681)
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.
⚠️ Breaking Changes & Deprecations (1)
- - BREAKING CHANGE Revert "feat(flags): script arguments come after '--'" (#3681)
✨ New Features & Capabilities (6)
- BREAKING CHANGE Revert "feat(flags): script arguments come after '--'" (#3681)
- feat(fs): add more unix-only fields to FileInfo (#3680)
- feat(http): allow response body to be string (#3705)
- feat(std/node): Added node timers builtin (#3634)
- feat: Add Deno.symbols and move internal fields for test (#3693)
- feat: Add gzip, brotli and ETag support for file fetcher (#3597)
⚡ Performance & Enhancements (2)
- perf: Create an old program to be used in snapshot (#3644, #3661)
- perf: share http client in file fetcher (#3683)
🔧 Bug Fixes & Patches (4)
- fix(workers): minimal error handling and async module loading (#3665)
- fix: Remove std/multipart (#3647)
- fix: Resolve read/write whitelists from CWD (#3684)
- fix: process hangs when fetch called (#3657)
📄 View Raw Release Notes (Original Developer Log)
### Changes
- BREAKING CHANGE Revert "feat(flags): script arguments come after '--'" (#3681)
- feat(fs): add more unix-only fields to FileInfo (#3680)
- feat(http): allow response body to be string (#3705)
- feat(std/node): Added node timers builtin (#3634)
- feat: Add Deno.symbols and move internal fields for test (#3693)
- feat: Add gzip, brotli and ETag support for file fetcher (#3597)
- feat: support individual async handler for each op (#3690)
- fix(workers): minimal error handling and async module loading (#3665)
- fix: Remove std/multipart (#3647)
- fix: Resolve read/write whitelists from CWD (#3684)
- fix: process hangs when fetch called (#3657)
- perf: Create an old program to be used in snapshot (#3644, #3661)
- perf: share http client in file fetcher (#3683)
- refactor: remove Isolate.current_send_cb_info and DenoBuf, port
Isolate.shared_response_buf (#3643)
### Install / Upgrade
**With Shell:**
```sh
curl -fsSL https://deno.land/x/install/install.sh | sh -s v0.30.0
```
**With PowerShell:**
```powershell
iwr https://deno.land/x/install/install.ps1 -useb -outf install.ps1; .\install.ps1 v0.30.0
```