React native EventEmitter

Adding an Event Listener

What is stale state in React? Stale state is a problem that occurs whenever we’re trying to update state, often within a closure . A closure is a type of function in JavaScript, where we’re using a variable from an outer scope.

However great this is, it is essential to note that purely functional components with hooks always re-render during a React render cycle . Therefore, React Hooks provide the best example for component reusability. When a parent component renders, React recursively renders all of its child components.

EventEmitterlink Use in components with the @Output directive to emit custom events synchronously or asynchronously, and register handlers for those events by subscribing to an instance .

An efficient way to solve stale closures is to correctly set the dependencies of React hooks . Or, in the case of a stale state, use a functional way to update the state. The key takeaway is to try to supply hooks with closures that capture the freshest variables.