Since I am using typescript, I want to use the property, but there is no related information even when I search, so I am using the any type. How can I get the type of pluginviews?
const linkPlugin = ((view as any).pluginViews)[0] as LinkPlugin;
That’s not part of the public interface, so its type is not in the type definitions, and you should not be touching it. (Exploring the interface through devtools is not generally a good idea for JS libraries, since you’ll just end up finding private interfaces that aren’t documented and might change between versions. Rely on the docs instead.)