observable 5 typescript 5 subscription 4 observer 4 hook 3 library 3 react 3 rollup 3 use 3 javascript 2 hooks 2 browser 2 use-observable 2 event bus 1 type-safe events 1 event pattern 1 async observer 1 event stream 1 event listener 1 typescript design patterns 1 typescript programming 1 async events 1 event registration 1 typescript reactive programming 1 event-driven 1 event-driven-architecture 1 eventemitter 1 nodejs 1 reactive 1 use observable 1 react-hooks 1 rxjs 1 usestate 1 design-pattern 1 generic 1 singleware 1 subject 1 EventEmitter 1 Events 1 addEventListener 1 addListener 1 emit 1 emits 1 emitter 1 event 1 once 1 subscribe 1 Typescrpt EventEmitter 1 Typescrpt Events Management 1 event handling 1 event system 1 event-driven programming 1 event dispatcher 1 event sourcing 1 publish-subscribe 1 event delegation 1 custom events 1 typescript events 1 typescript event emitter 1 typescript event handling 1