react-window

Pros of Virtual

• Framework-agnostic, supporting React, Vue, Solid, and more
• More flexible API with advanced features like dynamic item sizes and sticky items
• Active development and community support

Cons of Virtual

• Steeper learning curve due to more complex API
• Potentially larger bundle size due to additional features

Code Comparison

React Window:

import { FixedSizeList } from 'react-window';

const Example = () => (
  <FixedSizeList
    height={150}
    itemCount={1000}
    itemSize={35}
    width={300}
  >
    {({ index, style }) => <div style={style}>Row {index}</div>}
  </FixedSizeList>
);

Virtual:

import { useVirtualizer } from '@tanstack/react-virtual';

const Example = () => {
  const virtualizer = useVirtualizer({
    count: 1000,
    getScrollElement: () => parentRef.current,
    estimateSize: () => 35,
  });

  return (
    <div ref={parentRef} style={{ height: '150px', overflow: 'auto' }}>
      <div style={{ height: `${virtualizer.getTotalSize()}px` }}>
        {virtualizer.getVirtualItems().map((virtualItem) => (
          <div key={virtualItem.key} style={{
            position: 'absolute',
            top: 0,
            left: 0,
            width: '100%',
            height: `${virtualItem.size}px`,
            transform: `translateY(${virtualItem.start}px)`,
          }}>
            Row {virtualItem.index}
          </div>
        ))}
      </div>
    </div>
  );
};

Pros of react-virtualized

• More comprehensive feature set, including support for various layouts (Grid, List, Table, etc.)
• Offers additional utilities like CellMeasurer for dynamic content sizing
• Mature project with extensive documentation and community support

Cons of react-virtualized

• Larger bundle size due to its comprehensive nature
• More complex API, which can lead to a steeper learning curve
• Higher memory usage, especially for large datasets

Code Comparison

react-virtualized:

import { List } from 'react-virtualized';

<List
  width={300}
  height={300}
  rowCount={1000}
  rowHeight={20}
  rowRenderer={({ index, key, style }) => (
    <div key={key} style={style}>Row {index}</div>
  )}
/>

react-window:

import { FixedSizeList } from 'react-window';

<FixedSizeList
  height={300}
  width={300}
  itemCount={1000}
  itemSize={20}
>
  {({ index, style }) => <div style={style}>Row {index}</div>}
</FixedSizeList>

Both libraries serve similar purposes, but react-window is a more lightweight and focused alternative to react-virtualized. It offers improved performance and a simpler API, making it easier to use for basic virtualization needs. However, react-virtualized remains a powerful choice for complex use cases requiring advanced features and layouts.

Pros of react-virtuoso

• More flexible and feature-rich, supporting dynamic heights and complex layouts
• Built-in support for grouping, sticky headers, and footer
• Easier to use with less boilerplate code required

Cons of react-virtuoso

• Slightly larger bundle size due to additional features
• May have a steeper learning curve for simpler use cases
• Less established in the React ecosystem compared to react-window

Code Comparison

react-window:

import { FixedSizeList } from 'react-window';

<FixedSizeList
  height={400}
  itemCount={1000}
  itemSize={35}
  width={300}
>
  {({ index, style }) => <div style={style}>Row {index}</div>}
</FixedSizeList>

react-virtuoso:

import { Virtuoso } from 'react-virtuoso';

<Virtuoso
  style={{ height: '400px', width: '300px' }}
  totalCount={1000}
  itemContent={index => <div>Row {index}</div>}
/>

Both libraries aim to efficiently render large lists in React applications, but react-virtuoso offers more built-in features and flexibility at the cost of a slightly larger bundle size. react-window is more lightweight and may be preferable for simpler use cases, while react-virtuoso shines in complex scenarios with dynamic content and layouts.

Pros of Virtual

• Framework-agnostic, supporting React, Vue, Solid, and more
• More flexible API with advanced features like dynamic item sizes and sticky items
• Active development and community support

Cons of Virtual

• Steeper learning curve due to more complex API
• Potentially larger bundle size due to additional features

Code Comparison

React Window:

import { FixedSizeList } from 'react-window';

const Example = () => (
  <FixedSizeList
    height={150}
    itemCount={1000}
    itemSize={35}
    width={300}
  >
    {({ index, style }) => <div style={style}>Row {index}</div>}
  </FixedSizeList>
);

Virtual:

import { useVirtualizer } from '@tanstack/react-virtual';

const Example = () => {
  const virtualizer = useVirtualizer({
    count: 1000,
    getScrollElement: () => parentRef.current,
    estimateSize: () => 35,
  });

  return (
    <div ref={parentRef} style={{ height: '150px', overflow: 'auto' }}>
      <div style={{ height: `${virtualizer.getTotalSize()}px` }}>
        {virtualizer.getVirtualItems().map((virtualItem) => (
          <div key={virtualItem.key} style={{
            position: 'absolute',
            top: 0,
            left: 0,
            width: '100%',
            height: `${virtualItem.size}px`,
            transform: `translateY(${virtualItem.start}px)`,
          }}>
            Row {virtualItem.index}
          </div>
        ))}
      </div>
    </div>
  );
};

Pros of react-tiny-virtual-list

• Smaller bundle size, making it more lightweight for simpler use cases
• Easier to set up and use for basic virtualization needs
• Supports both fixed and variable height items out of the box

Cons of react-tiny-virtual-list

• Less actively maintained compared to react-window
• Fewer features and customization options
• Limited support for horizontal lists and grid layouts

Code Comparison

react-tiny-virtual-list:

import VirtualList from 'react-tiny-virtual-list';

<VirtualList
  width={300}
  height={600}
  itemCount={10000}
  itemSize={50}
  renderItem={({ index, style }) => (
    <div style={style}>Item {index}</div>
  )}
/>

react-window:

import { FixedSizeList } from 'react-window';

<FixedSizeList
  height={600}
  width={300}
  itemCount={10000}
  itemSize={50}
>
  {({ index, style }) => (
    <div style={style}>Item {index}</div>
  )}
</FixedSizeList>

Both libraries offer similar basic functionality for rendering large lists efficiently. react-tiny-virtual-list provides a simpler API, while react-window offers more advanced features and better performance for complex use cases. The choice between them depends on the specific requirements of your project and the level of customization needed.