# react-infinite-scroll-component: an IntersectionObserver-based infinite scroll for React

> Version 7.2.1 of react-infinite-scroll-component ships two APIs, a component and a useInfiniteScroll hook, with zero runtime dependencies and TypeScript types. Here is what the current release actually covers, where it stops, and what to check before you adopt it.

**ankeetmaini/react-infinite-scroll-component** — An awesome Infinite Scroll component in react.

- Repository: https://github.com/ankeetmaini/react-infinite-scroll-component
- Website: https://react-infinite-scroll-component.netlify.com/
- Stars: 3,093 · Forks: 334
- Language: TypeScript
- License: MIT
- Published: 2026-09-24 · Updated: 2026-09-24 · Language: en
- Canonical page: https://hysenlabs.com/projects/ankeetmaini-react-infinite-scroll-component

## What react-infinite-scroll-component solves, and for whom

The component exists to remove one repetitive piece of plumbing: detecting that a user has reached the end of a list and firing the next page request. The README describes it as "Infinite scroll for React. Zero runtime dependencies, IntersectionObserver-based, TypeScript-first. ~4 kB gzipped." That is the whole pitch, and it is a narrow one.

The audience is React developers building feeds, search results, comment threads and chat histories who do not want to hand-roll scroll listeners or IntersectionObserver wiring. The package targets window scroll, fixed-height containers and custom scrollable parents, so it covers both a full-page feed and a 400px panel embedded in a dashboard. React 17, 18 and 19 are listed as compatible, which matters for teams mid-migration.

The design decision worth noting is that the library owns the trigger, not the data. It never fetches anything. You pass a next callback and a dataLength number, and it decides when to call you. That keeps the package small and keeps your fetching layer, whether that is fetch, React Query or a framework loader, entirely outside it.

## How the IntersectionObserver rewrite drives the next() call

Version 7.1.0 is labelled "IntersectionObserver rewrite" in the release notes, and the README confirms the mechanism: the component watches a sentinel element and calls next() when it enters the viewport. This is the modern approach and it avoids the scroll-event throttling that older infinite scroll packages needed.

The data flow is a loop you control. You hold items in state. You pass dataLength={items.length} so the component knows the list grew, next={fetchMore} so it knows what to call, and hasMore so it knows when to stop. When fetchMore resolves and you append, dataLength changes, the component re-evaluates, and if the sentinel is still visible it fires again. That last part is the behaviour that surprises people: if your first page does not fill the container, the component will keep calling next() until hasMore flips to false or the list overflows. The README's own example handles this by setting hasMore to false when a page comes back empty.

The hook exposes the same machinery without the markup. useInfiniteScroll returns sentinelRef and isLoading, and the README instructs you to place the sentinelRef div at the end of your list. The hook fires next() when that element enters the viewport. This is the API to pick when the component's built-in loader and endMessage markup do not match your design system.

## Installing react-infinite-scroll-component and rendering a first feed

Installation is a single npm, yarn or pnpm command. The package has no runtime dependencies, so nothing else is pulled into your bundle. Note the engines field in package.json: node >=20.0.0.

```bash
npm install react-infinite-scroll-component
```

The README's basic TypeScript example wraps your mapped items in the InfiniteScroll component and supplies four required props. dataLength is the current item count, next is the async fetch, hasMore gates further calls, and loader is the node shown while a page is in flight. endMessage renders once hasMore is false.

```tsx
import { useState } from 'react';
import InfiniteScroll from 'react-infinite-scroll-component';

function Feed() {
  const [items, setItems] = useState(initialItems);
  const [hasMore, setHasMore] = useState(true);

  const fetchMore = async () => {
    const next = await api.getItems({ offset: items.length });
    if (next.length === 0) { setHasMore(false); return; }
    setItems((prev) => [...prev, ...next]);
  };

  return (
    <InfiniteScroll dataLength={items.length} next={fetchMore} hasMore={hasMore}
      loader={<p>Loading...</p>} endMessage={<p>All items loaded.</p>}>
      {items.map((item) => <div key={item.id}>{item.name}</div>)}
    </InfiniteScroll>
  );
}
```

If the list lives inside a scrollable panel rather than the window, pass scrollableTarget. The README shows both a string id and a ref value. The string form requires the id to exist on the container element.

```tsx
<div id="scrollableDiv" style={{ height: 400, overflow: 'auto' }}>
  <InfiniteScroll dataLength={items.length} next={fetchMore} hasMore={hasMore}
    loader={<p>Loading...</p>} scrollableTarget="scrollableDiv">
    {items.map((item) => <div key={item.id}>{item.name}</div>)}
  </InfiniteScroll>
</div>
```

When the sentinel enters the viewport you should see the loader node appear, then the new rows, then endMessage once a page returns empty and hasMore goes false.

## Inverse chat scroll and pull-to-refresh are opt-in props

Two features beyond the basic feed are documented with full examples. Inverse scroll targets messaging UIs: you set inverse={true} on the component, give the container flexDirection: 'column-reverse', and point scrollableTarget at it. The README's chat example uses a 500px box with overflow auto and loads older messages as the user scrolls up. This is a genuinely fiddly layout to get right by hand, and having it as a documented prop is the strongest argument for the component over a bare observer.

Pull-to-refresh is enabled with pullDownToRefresh and configured through pullDownToRefreshThreshold, refreshFunction, pullDownToRefreshContent and releaseToRefreshContent. The README's example uses a threshold of 50 and passes two h3 nodes for the pull and release states. Worth flagging: this is a pointer-drag gesture, not the native mobile pull-to-refresh, and the README does not describe how it behaves on touch devices versus mouse. Test it on the devices you actually support before assuming parity with a native implementation.

Both features ship in the same ~4 kB gzipped bundle, so you are not paying for them separately if you only need the basic feed.

## Where react-infinite-scroll-component is the wrong tool

The component appends DOM nodes. It does not window them. If your feed grows to thousands of rows, every appended item stays mounted, and the browser pays for layout and paint on all of them. The README's own keyword list includes "virtualized" as a related search, but the documentation does not describe any virtualization support. If you need windowing, this package is the wrong layer and you want a virtualized list library instead.

Horizontal infinite scroll is the second gap. The related searches include "react infinite scroll component horizontal", and the README documents window scroll, fixed-height containers and custom scrollable parents, all of which read as vertical. There is no horizontal example. Treat horizontal as unverified.

Third, the fill-the-container behaviour cuts both ways. Because next() fires whenever the sentinel is visible, a short first page inside a tall viewport can trigger repeated requests in quick succession. The README's guard is to set hasMore false on an empty page, which stops the loop but does not throttle it. If your API is rate-limited or expensive per call, add your own in-flight guard in the next callback; the library does not provide one.

Finally, the component is a client component. The Next.js App Router recipe in the README fetches initial data in a Server Component and passes it to a 'use client' child. If your rendering model cannot accept that split, this package does not fit.

## Against a general-purpose observer hook or a virtualized list

The obvious alternative is react-intersection-observer, which wraps the same browser API in a general-purpose hook. The difference is scope. That library gives you an inView boolean and leaves loader markup, endMessage, hasMore gating, inverse scroll and pull-to-refresh entirely to you. react-infinite-scroll-component bundles those decisions into props and a second hook API. If you already have a design system with its own loading states and you only need the visibility signal, the general-purpose hook is less opinionated and you will not fight the component's markup. If you want the chat and pull-to-refresh behaviours without writing them, this package saves real work.

The other alternative is a virtualized list library, and the difference is architectural rather than stylistic. Virtualization renders only the visible window of rows and recycles DOM nodes as you scroll. react-infinite-scroll-component renders every row you append. For a few hundred items the difference is invisible. For tens of thousands it is the difference between a smooth list and a stalled main thread. The two approaches can be combined, but the README shows no integration with a virtualizer, so you would be writing that glue yourself.

React Query's infinite query is a third option, and it sits at a different layer: it manages pagination state and caching but still needs a visibility trigger. The README's Next.js recipe uses a plain fetch with a cursor, so the two are not mutually exclusive.

## Maintenance, licence and what a 7.x upgrade costs you

The repository is not archived, and the last push was on 2026-06-06. The most recent release, v7.2.1, is labelled "Accessibility props" and landed the same day. Before that, v7.2.0 introduced the useInfiniteScroll hook in April 2026 and v7.1.0 was the IntersectionObserver rewrite. That release sequence is the upgrade story: if you are on a 6.x line, the observer rewrite is a behavioural change, not a cosmetic one, and the hook is new API surface rather than a replacement for the component.

The package is MIT licensed, which permits commercial use, modification and redistribution provided the copyright notice and permission notice are retained. That is a statement about the licence text, not legal advice; check it against your own distribution model.

The toolchain is worth budgeting for. package.json declares node >=20.0.0, and the build runs through rollup with a prepublish step that rebuilds dist. Tests run under jest, linting under eslint, formatting under prettier, and there is a size-limit script. If you fork, you inherit all of that. If you only consume the published package, the practical upgrade cost is checking that your next callback still guards against an empty page, since that guard is what stops the observer loop.

## Conclusion

Adopt it if your list is a plain DOM list that appends pages and you want loader, endMessage, pull-to-refresh and inverse chat scroll handled for you. Do not adopt it if you render thousands of rows and need windowing, or if you need horizontal infinite scroll, which the README does not document. Verify the React version you run against the stated React 17, 18 and 19 compatibility, and check the scrollableTarget ref path against your container before wiring it into a virtualized list.

## FAQ

### How do I use react-infinite-scroll-component?

Import the default InfiniteScroll component and pass dataLength, next, hasMore and loader. The component calls next when the observer sentinel enters the viewport, and you append the returned items to state. If you need your own markup, use the useInfiniteScroll hook and place the returned sentinelRef at the end of your list.

### How do I install react-infinite-scroll-component?

Run npm install react-infinite-scroll-component, or the yarn or pnpm equivalent. The package has no runtime dependencies. Note that package.json declares node >=20.0.0.

### What is an alternative to react-infinite-scroll-component?

react-intersection-observer is the closest alternative: it wraps the same browser API as a general-purpose hook and returns an inView boolean, leaving loader, endMessage, hasMore and inverse scroll to you. A virtualized list library is the alternative when you need windowing rather than plain DOM appending.

## Sources

- [ankeetmaini/react-infinite-scroll-component on GitHub](https://github.com/ankeetmaini/react-infinite-scroll-component)
- [License: MIT](https://github.com/ankeetmaini/react-infinite-scroll-component/blob/master/LICENSE)
- [Project website](https://react-infinite-scroll-component.netlify.com/)
- [README](https://github.com/ankeetmaini/react-infinite-scroll-component/blob/master/README.md)
- [Releases](https://github.com/ankeetmaini/react-infinite-scroll-component/releases)

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Hysen Labs editorial analysis, written from the project's own repository and release notes. Cite the canonical page: https://hysenlabs.com/projects/ankeetmaini-react-infinite-scroll-component