Walkthrough

Updated infinite scroll logic in the React example to conditionally trigger fetchNextPage only when the sentinel is in view, a next page is available, and no fetch is currently in progress. The effect’s dependency array now includes inView, hasNextPage, isFetchingNextPage, and fetchNextPage.

Changes

Sequence Diagram(s)

sequenceDiagram
  autonumber
  participant U as User
  participant V as Viewport/Observer
  participant P as Page Component
  participant RQ as React Query

  U->>V: Scrolls
  V-->>P: inView = true
  alt inView && hasNextPage && !isFetchingNextPage
    P->>RQ: fetchNextPage()
    RQ-->>P: Appends next page
  else No next page or fetch in progress
    P-->>P: Do nothing
  end

  note over P: useEffect deps: inView, hasNextPage, isFetchingNextPage, fetchNextPage

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

I nudge the scroll with a whiskered grin,
Pages hop forward, but only when in—
No queue is busy, a next to be found,
I bounce through lists without a sound.
Carrots cached, I fetch with care,
One more nibble—only if it’s there. 🥕🐇

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