immutable-js/immutable-js
Immutable Js
Immutable.js is a library of persistent data structures and a functional state management toolkit. It provides a collection of immutable objects and arrays that prevent direct mutation to ensure predictable state management in JavaScript applications.
The library utilizes structural sharing to efficiently create new versions of data without full copying and implements lazy sequence processing to chain data transformations that execute only when values are requested. It also supports batch mutation processing, allowing multiple changes to be applied to a temporary mutable copy before returning an immutable version.
The toolkit covers a broad range of capabilities, including deep nested data updates, functional data manipulation, and value-based equality checking. It provides utilities for type conversion between persistent collections and native JavaScript objects and arrays, as well as tools for sorting, partitioning, and merging data structures.
Features
- Structural Sharing - Employs structural sharing to reuse unchanged nodes between versions of persistent data structures, minimizing memory overhead.
- Functional State Management - Provides a toolkit for managing application state using pure functions and immutable data structures.
- Immutable Data Structures - Provides a suite of immutable data structures that transform plain JavaScript objects and arrays into persistent collections.
- Application State Management - Provides a toolkit for application state management using persistent structures to ensure predictable updates in JavaScript.
- Data Manipulation Libraries - Provides a comprehensive toolkit for transforming, filtering, and querying structured data while maintaining immutability.
- Hash Array Mapped Tries - Implements Hash Array Mapped Tries to enable efficient updates of persistent collections through structural sharing.
- Deep Object Manipulations - Provides utilities for recursive property updates and structural modifications of deeply nested data structures.
- Path-Copying Persistence - Uses path-copying persistence to create new versions of data structures while preserving previous state.
- Persistent Application State - Maintains persistent application state using immutable collections to ensure predictable updates and prevent direct mutation.
- Persistent Data Structures - Implements persistent data structures that use structural sharing to efficiently preserve previous versions of state.
- Value-Based Equality Checking - Implements value-based equality checking to optimize rendering and change detection by comparing content instead of references.
- Lazy Sequence Processors - Ships a system for chaining data transformations that execute only when values are requested.
- Immutable Mutation Batching - Supports batch mutation processing using temporary mutable copies to optimize performance during multiple rapid updates.
- Lazy Iterators - Implements memory-efficient lazy iterators that defer data transformations until values are explicitly requested.
- Path-Based Data Access - Enables path-based data access to read and update values deep within nested data trees without manual traversal.
- Deep Equality Checks - Implements deep equality checks to determine if two collections are identical based on content rather than memory reference.
- Deep Equality Comparison - Provides utilities for deep equality comparison of nested data structures by value.
- Lazy Evaluation Patterns - Provides lazy sequence evaluation to defer map and filter computations until values are explicitly requested.
- State Management - Persistent data collections for JavaScript.
- Functional Programming - Library for creating and managing immutable data structures.
- State Management - Listed in the “State Management” section of the Awesome React awesome list.
- Utilities and Helpers - Immutable data collections for JavaScript.
