⚠️ Breaking Change
Impact Score: 7/10
Deno v1.4.3 — 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(std/encoding/csv): Improve the definition of ParseOptions (#7714)
⚡ Executive Summary (TL;DR)
Deno v1.4.3. Source highlight: feat(unstable): Add module specifier to deno info --json output (#7725)
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(std/encoding/csv): Improve the definition of ParseOptions (#7714)
✨ New Features & Capabilities (4)
- feat(unstable): Add module specifier to deno info --json output (#7725)
- refactor: Add concept of 'legacy' compiler to enable non-breaking refactoring
- refactor: Add Deno.InspectOptions::colors (#7742)
- feat(std/path): Align globToRegExp() with bash glob expansion (#7209)
⚡ Performance & Enhancements (3)
- refactor: Improve graph and tsc_config (#7747)
- refactor: Improve op crate interfaces for other consumers (#7745)
- BREAKING(std/encoding/csv): Improve the definition of ParseOptions (#7714)
🔧 Bug Fixes & Patches (6)
- fix: Bundle loader returns exported value (#7764)
- fix: Check cached versions during transpile (#7760)
- fix: Net listen crashes on explicit undefined hostname (#7706)
- fix: --no-check recognizes require (#7720)
- fix: Use $deno$test.ts instead of .deno.test.ts (#7717)
- fix: Use global_state file_fetcher when using SpecifierHandler (#7748)
📄 View Raw Release Notes (Original Developer Log)
### 1.4.3 / 2020.10.02
- feat(unstable): Add module specifier to deno info --json output (#7725)
- fix: Bundle loader returns exported value (#7764)
- fix: Check cached versions during transpile (#7760)
- fix: Net listen crashes on explicit undefined hostname (#7706)
- fix: --no-check recognizes require (#7720)
- fix: Use $deno$test.ts instead of .deno.test.ts (#7717)
- fix: Use global_state file_fetcher when using SpecifierHandler (#7748)
- fix(console): Catch and format getter errors (#7766)
- fix(dts): Use var instead of const and let for globals (#7680)
- fix(inspector): Shutdown server gracefully on drop (#7716)
- fix(repl): Enable await and let re-declarations (#7784)
- fix(repl): Use a default referrer when empty (#7794)
- fix(test): Do not start inspector server when collecting coverage (#7718)
- fix(websocket): Add missing close events and remove extra error event (#7606)
- refactor: Add concept of 'legacy' compiler to enable non-breaking refactoring
(#7762)
- refactor: Combine MainWorker::new and MainWorker::create (#7693)
- refactor: Extract inspector session (#7756, #7763)
- refactor: Factor out check_unstable op helper (#7695)
- refactor: Improve graph and tsc_config (#7747)
- refactor: Improve op crate interfaces for other consumers (#7745)
- refactor: Move op state registration to workers (#7696)
- refactor: Use JsRuntime to implement TSC (#7691)
- refactor: Add Deno.InspectOptions::colors (#7742)
- upgrade: swc, deno_doc, deno_lint, dprint (#7711, #7793)
Changes in std version 0.72.0:
- BREAKING(std/encoding/csv): Improve the definition of ParseOptions (#7714)
- feat(std/path): Align globToRegExp() with bash glob expansion (#7209)
- fix(std/datetime): Add timezone to date strings in tests (#7675)
- refactor(std/example): Inconsistencies in the example tests (#7684)
- refactor(std/testing): Get rid of default export and make std/testing/diff.ts
private (#7592)