⚠️ Breaking Change
Impact Score: 7/10
Deno v1.23.0 — 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: remove `Intl.v8BreakIterator` (#14864)
- BREAKING: Remove unstable Deno.sleepSync (#14719)
⚡ Executive Summary (TL;DR)
Deno v1.23.0. Source highlight: BREAKING: remove `Intl.v8BreakIterator` (#14864)
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 (2)
- - BREAKING: remove `Intl.v8BreakIterator` (#14864)
- - BREAKING: Remove unstable Deno.sleepSync (#14719)
✨ New Features & Capabilities (6)
- feat(console): pass options and depth to custom inspects (#14855)
- feat(ext/crypto): export elliptic keys as "raw" (#14764)
- feat(ext/ffi): support passing and returning bigints (#14523)
- feat(fmt): remove some unnecessary parens in types (#14841)
- feat(fmt): support formatting cjs, cts, mjs, and mts files (#14837)
- feat(ops): 'hybrid' ops - sync returning future (#14640)
🔧 Bug Fixes & Patches (4)
- fix(check): use "moduleDetection": "force" (#14875)
- fix(cli): add config flag to `deno info` (#14706)
- fix(console): constrol inspect() indent with option (#14867)
- fix(url): properly indent when inspecting URLs (#14867)
📄 View Raw Release Notes (Original Developer Log)
### 1.23.0 / 2022.06.15
- BREAKING: remove `Intl.v8BreakIterator` (#14864)
- BREAKING: Remove unstable Deno.sleepSync (#14719)
- Deno.exit() is an alias to self.close() in worker contexts (#14826)
- feat(console): pass options and depth to custom inspects (#14855)
- feat(ext/crypto): export elliptic keys as "raw" (#14764)
- feat(ext/ffi): support passing and returning bigints (#14523)
- feat(fmt): remove some unnecessary parens in types (#14841)
- feat(fmt): support formatting cjs, cts, mjs, and mts files (#14837)
- feat(ops): 'hybrid' ops - sync returning future (#14640)
- feat(repl): Add key binding to force a new line (#14536)
- feat(runtime/signal): implement SIGINT and SIGBREAK for windows (#14694)
- feat(task): add `--cwd` flag for configuring the working directory (#14823)
- feat(task): support redirects, cat, xargs (#14859)
- feat(test): update test summary report (#14629)
- feat(vendor): support using an existing import map (#14836)
- feat: make Child.kill argument optional (#14669)
- feat: no type-check by default (#14691)
- feat: update to TypeScript 4.7 (#14242)
- feat(web): enable deflate-raw compression format (#14863)
- fix(check): use "moduleDetection": "force" (#14875)
- fix(cli): add config flag to `deno info` (#14706)
- fix(console): constrol inspect() indent with option (#14867)
- fix(url): properly indent when inspecting URLs (#14867)
- upgrade: v8 10.4.132.5 (#14874)