OOP Obsever
observer - pattern that helps you to handle & dispath events
IObservable
Event emitter interface. Contains subscribe, unsubscribe and notify methods.
Observable
Class with implementation IObservable interface. It's ready to work!
// define event props
interface TestObserverProps {
test: string;
}IObserver
Event listener interface. Has update function, that called with generic props.
class TestObserver implements IObserver<TestObserverProps> {
update(args: TestObserverProps) {
// event handler code
console.log(args.test);
}
}Usage
When IObserver is defined just call notify method.
const observerable = new Observer<TestObserverProps>();
const observer = new TestObserver();
observerable.subscribe(observer);
observerable.notify({ test: "Some text here" });
📦 Install
npm i oop-observer
