Difference between EventEmitter.next() and EventEmitter.emit() in Angular 2
They do the same. emit() is the current version, next() is deprecated.
In the latest version(Ng9), the source code of event_emitter.ts goes as following:
export class EventEmitter<T extends any> extends Subject<T> { /** * Emits an event containing a given value. * @param value The value to emit. */ emit(value?: T) { super.next(value); }}EventEmitter extends from parent class Subject. And emit method call super.next() as you may expected.