Incorrect documentation for fixing memory leaks

The "isMounted is an Antipattern" documentation article suggest avoiding memory leaks with makeCancelable, but this doesn't actually solve the issue since the callback is still referenced. The garbage collector does not understand that setting hasCanceled_ means that resolve will never be called, so it cannot release resolve or the references contained within. Even if it could, reject might also reference this, so memory leaks could still exist. Instead, makeCancelable should store the resolve and reject callbacks itself, and it should null them out on cancelation.

Another user pointed this issue out in https://github.com/facebook/react/issues/5465#issuecomment-287113777

影響を受ける資料は issue にリンクされている「isMounted is an Antipattern」記事です。まず、その makeCancelable の例と、参照されている議論を確認してください。メモリリークに関する説明が技術的に正確になるようドキュメントを更新し、その後、記事が問題のある実装を推奨しなくなっていることを確認してください。