normalizr

Allows declarative definition of data relationships with schemas, making normalization predictable and consistent, as emphasized in the README's philosophy.

Stores entities in ID-keyed dictionaries for fast lookups and updates, reducing redundancy and improving performance in state management systems like Redux.

Supports both normalization and denormalization using the same schemas, enabling easy conversion between nested and flat data structures for rendering and storage.

Works well with immutable data patterns, ensuring predictable state changes in applications using libraries like Redux, as noted in the key features.