Head-to-Head: Harlem vs MobX Analysis


v3.1.8(7 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


v6.10.2(about 1 month ago)

This package is actively maintained.Types definitions are bundled with the npm packageNumber of direct dependencies: 0Monthly npm downloads

MobX is a simple and scalable state management solution for JavaScript applications. It utilizes observables to automatically track and propagate changes to state, leading to more efficient updates and better performance. MobX's minimalistic and declarative approach to state management allows for easy integration into new or existing projects without requiring a complete overhaul of the application architecture.

Alternatives: redux, vuex, ngrx

Tags: javascriptstate-managementmobxobservablesreactive-programming



mobx has been a popular state management library for React applications for many years, with a large community and widespread adoption. On the other hand, @harlem/core is a relatively new library and may not have the same level of popularity or adoption.


mobx is based on the concept of observable data structures and provides a straightforward and powerful way to manage state in applications, promoting a reactive programming style. @harlem/core also implements a reactive state management approach, but with a different API and design philosophy.

Developer Experience

mobx provides a mature and well-documented ecosystem with a wide range of tools and extensions. It has a large community, making it easy to find examples, tutorials, and solutions to common problems. @harlem/core, being a newer library, may have a smaller ecosystem and fewer resources available.

Integration with React

Both libraries are designed to work with React. mobx seamlessly integrates with React components using decorators, hooks, or higher-order components. @harlem/core also integrates with React components but follows a different approach called container components and a simplified API for managing state.

Learning Curve

mobx has a steeper learning curve due to its rich set of concepts, observer patterns, and the need to understand observables, actions, and reactions. @harlem/core aims to provide a simpler and more intuitive API, making it potentially easier to grasp for developers who are new to state management in React.


mobx has a reputation for being performant and optimized for large-scale applications. It includes fine-grained reactivity and efficient updates. @harlem/core is also designed to be performant, but being a newer library, it may not have been extensively optimized yet.