Class BasicObservable<T, R>

This flag indicates whether the observable is asynchronous. Any observable that accepts promise returns may be asynchronous but this information is not available at runtime unless you specify here, typically via AsyncObservable.

This flag indicates whether the observable is asynchronous. Any observable that accepts promise returns may be asynchronous but this information is not available at runtime unless you specify here, typically via AsyncObservable.

True if there is at least one observer registered.

Observable supports standard "for await (const value of observable").

Using an observer in this manner limits your listener to the first parameter normally emitted and your observer cannot return a value.

Release resources associated with the observable.

Notify observers.

Determine whether an observer is registered.

Remove an observer.

Add an observer.

Add an observer that emits once then is unregistered.

Attaches callbacks for the resolution and/or rejection of the Promise.