We've had front end reactivity since 2018 – via Async Iterables

The author argues that frontend reactivity has existed since 2018 through JavaScript's native Async Iterables, where the first yielded value serves as initial state and subsequent values act as state updates. This challenges the need for framework-specific reactivity systems like React's useState, Vue's ref, Angular's RxJS, and Solid's Signals, suggesting that developers have been trapped in cycles of learning tools that become obsolete every few years.