@lifaon/rx-js-light/src/observable/built-in/from/without-notifications/dom/from-mutation-observer/from-mutation-observer.mjs

Blazing fast Observables

export function fromMutationObserver(element, options) {
  return emit => {
    const observer = new MutationObserver(entries => {
      emit(entries[0]);
    });
    observer.observe(element, options);
    return () => {
      observer.disconnect();
    };
  };
}