Extension subject for singleton extensions.
Note care must be taken not to expose this subject to updates before the delegate instance (the singleton) has had a chance to attach its source properties. Thus, constructing an instance of this class should always await ready, even if the delegate instance is not immediately required.
Utility property definition for CommonJs
Extension subject declaration. Insert into the domain data to register a module export to be instantiated by an extension subject.
For example (assuming a m-ld
clone.write(ExtensionSubject.declare( 'myCustomClass', 'my-custom-module', 'MyExtClass' ));
the CommonJS module, must be accessible using
the ECMAScript module, must be accessible using
the constructor name exported by the module