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

Blazing fast Observables

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