Reselect is a state management optimization tool and memoization utility designed to minimize redundant calculations and UI re-renders. It functions as a library for creating memoized selectors that derive specific data from a state store.
The library implements input-based memoization and recursive selector composition to create a hierarchy of derived data dependencies. It ensures reference-stable result caching and provides custom equality checking to determine when a cache should be invalidated.
The project covers capabilities for derived data computation, frontend performance optimization, and selector stability validation to identify unstable behavior during development.