LightweightObservable

The core implementation is only around 100 lines of code, making it extremely lightweight, easy to audit, and simple to integrate without bloating the project.

Observables conform to Combine's Publisher protocol, enabling seamless interoperability with Apple's framework and simplifying migration paths for future updates.

Supports KeyPath-based subscriptions for direct property binding and closure-based updates, streamlining MVVM architecture implementations in UIKit apps.

Uses a Disposable and DisposeBag system to automatically clean up subscriptions and prevent retain cycles, as detailed in the README's memory management section.