Chad Curtis
6dd29c571f
Consolidate duplicated infinite-scroll boilerplate (auto-fetch page 2, IntersectionObserver, scroll trigger) into a shared useInfiniteScroll hook, and extract the flatten+dedup pattern into deduplicateEvents. Also migrate BadgesPage and ThemesPage to use useFeedTab for consistent tab persistence across all feed pages.
18 lines
526 B
TypeScript
18 lines
526 B
TypeScript
import type { NostrEvent } from '@nostrify/nostrify';
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/**
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* Flatten paginated Nostr event arrays and deduplicate by event ID.
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*
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* Accepts the `pages` property from a TanStack `useInfiniteQuery` result
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* where each page is a `NostrEvent[]`.
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*/
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export function deduplicateEvents(pages: NostrEvent[][] | undefined): NostrEvent[] {
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if (!pages) return [];
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const seen = new Set<string>();
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return pages.flat().filter((event) => {
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if (seen.has(event.id)) return false;
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seen.add(event.id);
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return true;
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});
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}
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