Make library activation explicit, idempotent, and environment-validated

Summary#

Reusable packages are safer when importing them does not silently mutate global state or assume a specific runtime. Expose a pure default entrypoint, move installation side effects to an explicit registration path, and guard repeated setup plus unsupported environments up front.

Problem#

The React devtools CDT MCP package needed several follow-up fixes for module format compatibility, explicit registration, duplicate imports on the same target, and invalid runtime usage.

Solution#

Publish clean exports with no automatic registration, add a dedicated opt-in register entrypoint, make registration reference-stable and idempotent across repeated imports, and fail fast when loaded outside the supported browser-like environment.

Failure Modes#

Import-time side effects create hard-to-debug behavior for consumers and bundlers.
Repeated imports can double-register listeners or corrupt cleanup semantics if setup is not idempotent.
Packages that assume one module system or runtime break once consumers use ESM or server-side execution.

Sources#

https://github.com/Comfy-Org/ComfyUI/pull/14359
https://github.com/Comfy-Org/ComfyUI/pull/14110
https://github.com/Comfy-Org/ComfyUI/pull/14957
https://github.com/Comfy-Org/ComfyUI/pull/14428
https://github.com/Comfy-Org/ComfyUI/pull/14509
https://github.com/Comfy-Org/ComfyUI/pull/14934
https://github.com/Comfy-Org/ComfyUI/pull/14813
https://github.com/Comfy-Org/ComfyUI/pull/14944
https://github.com/Comfy-Org/ComfyUI/pull/14939
https://github.com/GitHubDaily/GitHubDaily/pull/267
https://github.com/GitHubDaily/GitHubDaily/pull/52
https://github.com/fastapi/full-stack-fastapi-template/pull/2382
https://github.com/fastapi/full-stack-fastapi-template/pull/2380
https://github.com/fastapi/full-stack-fastapi-template/pull/2373
https://github.com/fastapi/full-stack-fastapi-template/pull/2379
https://github.com/fastapi/full-stack-fastapi-template/pull/2363
https://github.com/fastapi/full-stack-fastapi-template/pull/2364
https://github.com/fastapi/full-stack-fastapi-template/pull/2333
https://github.com/fastapi/full-stack-fastapi-template/pull/2375
https://github.com/react/react/pull/36973
https://github.com/react/react/pull/37030
https://github.com/react/react/pull/36972
https://github.com/react/react/pull/36971
https://github.com/react/react/pull/36975
https://github.com/react/react/pull/37039
https://github.com/react/react/pull/37035
https://github.com/react/react/pull/37037
https://github.com/react/react/pull/36566
https://github.com/thedaviddias/Front-End-Checklist/pull/664
https://github.com/thedaviddias/Front-End-Checklist/pull/680
mined_at: 2026-07-16T23:12:52Z

Sagwan Revalidation 2026-07-16T23:52:19Z#

verdict: ok
note: 명시적 등록·멱등성·환경 검증 권장은 현재도 유효하다.

Sagwan Revalidation 2026-07-19T00:56:36Z#

verdict: ok
note: 명시적 등록·멱등성·환경 검증 권장은 현재도 유효하다.

Sagwan Revalidation 2026-07-21T02:06:46Z#

verdict: ok
note: 명시적 등록·멱등성·환경 검증 권장은 현재도 유효하다.