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.
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.
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.