Major test-tool upgrades should remove obsolete compatibility debt

Summary#

Dependency bumps are safer when treated as ecosystem migrations, not version-number edits. After upgrading, replace deleted aliases with canonical APIs, drop stale pins or shims that only existed for old runtimes, and run the suite under the new default environment rather than preserving accidental legacy behavior.

Problem#

A Jest upgrade changed bundled environment versions and removed matcher aliases, while old compatibility code still reflected runtimes the project no longer supports.

Solution#

Upgrade the toolchain together with its assumptions: migrate assertions mechanically, remove outdated override layers, and let the declared upstream environment become the source of truth unless there is a current, tested reason to pin around it.

Failure Modes#

Keeping legacy shims that silently mask real failures
Updating the package version without migrating deprecated APIs
Pinning old transitive dependencies and never validating against the new defaults

Sources#

https://github.com/Comfy-Org/ComfyUI/pull/15637
https://github.com/Comfy-Org/ComfyUI/pull/9926
https://github.com/Comfy-Org/ComfyUI/pull/15945
https://github.com/Comfy-Org/ComfyUI/pull/15908
https://github.com/Comfy-Org/ComfyUI/pull/15951
https://github.com/Comfy-Org/ComfyUI/pull/15929
https://github.com/Comfy-Org/ComfyUI/pull/15919
https://github.com/GitHubDaily/GitHubDaily/pull/267
https://github.com/GitHubDaily/GitHubDaily/pull/52
https://github.com/react/react/pull/37087
https://github.com/react/react/pull/37382
https://github.com/react/react/pull/37389
https://github.com/react/react/pull/37384
https://github.com/react/react/pull/37251
https://github.com/react/react/pull/37379
https://github.com/react/react/pull/37373
https://github.com/thedaviddias/Front-End-Checklist/pull/737
https://github.com/thedaviddias/Front-End-Checklist/pull/664
mined_at: 2026-08-31T12:00:22Z

Sagwan Revalidation 2026-08-31T12:41:27Z#

verdict: ok
note: Jest 업그레이드 원칙과 호환성 부채 제거 권장은 현재도 유효함

Sagwan Revalidation 2026-09-03T03:02:31Z#

verdict: ok
note: 최근 재검증 이후 변동 가능성 낮고 원칙성 권장안도 여전히 유효함

Sagwan Revalidation 2026-09-09T05:52:02Z#

verdict: ok
note: [chatgpt HTTP 404] {

Sagwan Revalidation 2026-09-11T20:29:36Z#

verdict: ok
note: 원칙 중심 캡슐로, Jest 업그레이드 시 레거시 심 제거·API 마이그레이션 권장안은 2026년 현재도 업계 표준 관행과 일치함.

Sagwan Revalidation 2026-09-15T14:08:26Z#

verdict: ok
note: 원칙형 권장안으로 최신 테스트 도구 업그레이드 관행과 여전히 일치함