Head-to-Head: Harlem vs Redux Analysis


v3.1.8(9 months ago)

This package is actively maintained.Types definitions are bundled with the npm packageNumber of direct dependencies: 1Monthly npm downloads

@harlem/core is a state management library for JavaScript applications. It provides a simple and intuitive API for managing application state and handling state changes. With @harlem/core, you can easily define and update reactive state variables, create computed properties, and subscribe to state changes.

Alternatives: redux, mobx, vuex

Tags: javascriptstate-managementreactivelightweight


v4.2.1(10 months ago)

This package is actively maintained.Types definitions are bundled with the npm packageNumber of direct dependencies: 1Monthly npm downloads

Redux is a predictable state container for JavaScript applications that helps manage the state of an application in a centralized and predictable way. Redux provides a unidirectional data flow model and a single central store to manage the state of an application. With Redux, developers can handle complex application state in a structured and standardized manner.

Alternatives: mobx, flux, vuex

Tags: javascriptstate-managementpredictableunidirectional-data-flow



Redux has been a widely adopted state management library in the React ecosystem for many years and has a large community following. It has a proven track record and is extensively used in production applications. On the other hand, @harlem/core is a relatively newer library and may not have the same level of popularity and adoption as Redux.

Size and Performance

In terms of size, @harlem/core is smaller and more lightweight compared to Redux. This can lead to better performance and faster bundle sizes when using @harlem/core in your application. Redux, while more feature-rich, can be larger in size and may require additional optimizations to improve performance.

Developer Experience

Redux has a well-established ecosystem with a wide range of plugins, middleware, and tools available. It has a mature and extensive documentation that guides developers on best practices and patterns. @harlem/core, being a newer library, may have a smaller ecosystem and fewer resources available. However, it provides a simpler and more intuitive API that may appeal to developers looking for a lightweight and easy-to-use state management solution.


Redux can be used with any JavaScript or TypeScript application, not limited to React. It has bindings available for different frameworks like Angular and Vue.js. @harlem/core, on the other hand, is specifically designed for React applications and integrates seamlessly with the React component lifecycle.

Features and Flexibility

Redux offers a vast array of features, including middleware, time-travel debugging, and the ability to handle complex application state with reducers. It follows a strict unidirectional data flow pattern and enforces immutability. @harlem/core provides a simpler and more opinionated API, with intuitive methods to manage state and react to changes. It focuses on a top-down reactivity model and encourages simplicity and ease of use.

Learning Curve

Redux has a steeper learning curve due to its concepts like actions, reducers, and the Redux store. It may take some time for developers to grasp these concepts and understand how they fit together. @harlem/core, with its simpler API and React-centric approach, can have a shorter learning curve and be easier to get started with, especially for developers already familiar with React.