# LegendApp/legend-list

A high-performance list component for React Native and React

Repository: https://github.com/LegendApp/legend-list
Canonical: https://ross.abutalabs.com/products/legend-list
Homepage: https://www.legendapp.com/open-source/list
Language: TypeScript
License: MIT
License Family: permissive
Last push: 2026-08-21T12:48:49+00:00

## Health v2 (maintenance only)
Score: 88/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 98, release rhythm 98, longevity 46
- inputs: {"age_days": 651, "days_push": 12, "days_rel": 12, "gap_med": 2.5, "n_releases_24m": 35}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3323, forks 142 (observed 2026-08-28T04:07:56.344611+00:00)

## What it is
Legend List is a high-performance, pure-TypeScript list component for React Native and React, serving as a drop-in replacement for FlatList and FlashList. It is optimized for dynamically sized items, bidirectional infinite scrolling, and chat-style UIs without requiring native modules.

## Use cases
- replace FlatList with a faster list in React Native
- render lists with dynamically sized items without performance loss
- build a chat UI that stays scrolled to the bottom without inverting the list
- implement bidirectional infinite scrolling
- migrate an existing FlashList app to a faster list component
- avoid native module linking in a React Native list

## When to choose
- your React Native lists suffer from FlatList or FlashList performance issues
- items have varying heights and cause scroll jumps or blank cells
- you want a 100% JavaScript dependency with no native linking
- you need chat-style bottom-aligned lists or two-way infinite scroll

## When to avoid
- you need a list component outside the React/React Native ecosystem
- you rely on native module features or platform-specific list optimizations
- your project requires a long-term stable library with a large community, since this is a newer option

## Facets
- artifact type: library
- maturity: active
- function: ui-components, frontend-framework
- domain: mobile-development, frontend, web-development, performance
- platform: cross-platform
- tags: react-native, flatlist-replacement, flashlist, virtualized-list, typescript, infinite-scroll, chat-ui, mobile, web-server

## Member repositories
- LegendApp/legend-list (main) score 88

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:56.344611+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:41:48.719130+00:00, confidence not recorded.
  - readme: https://github.com/LegendApp/legend-list (fetched 2026-08-28T04:07:56.344611+00:00, sha 1f3fa72d6c22)
  - homepage: https://www.legendapp.com/open-source/list (fetched 2026-08-29T09:34:58.515290+00:00, sha 79687a494fe0)
- Data as of 2026-08-30T08:39:29.467469+00:00.