API Reference > ui-components > Tree > NextObserver NextObserver<T> Interface Beta NextObserver interface compatible with rxjs This interface ensures that consumers are not required to have rxjs as dependency. Properties Name Type Description closed undefined | false | true complete undefined | () => void error undefined | (err: any) => void next (value: T) => void Defined in ui/components/src/ui-components/tree/controlled/Observable.ts Line 70 Last Updated: 13 June, 2024