OptionaldebugA debug name for the signal. Used in Angular DevTools to identify the signal.
OptionalinjectorThis signal must either be created in an injection context or passed an injector.
OptionalrootThe root element where intersections will be observed.
OptionalrootOptionalthreshold
Optional injector reference if created outside injector context and IntersectionObserver options. If no IntersectionObserver options are passed then only all attributes are observed.