Annotation Interface JS.Export

Enclosing class:

JS

@Retention(RUNTIME)
@Target(TYPE)
public static @interface JS.Export

Denotes that the annotated Java class should be exported from the VM class. The annotated class must be a subclass of the JSObject class. A JSObject subclass may not be included in the image if the closed-world analysis concludes that the class is not used by the Java code of the application. However, exported JSObject subclasses are always included in the image, and are accessible from the JavaScript code (see JSObject documentation). Exported classes should be used with care. Since these classes and all their methods are unconditionally included in the image, this annotation should only be used in cases in which the class is supposed to be instantiated from JavaScript. If the JSObject subclass is only instantiated in Java and passed to JavaScript, then there is no need to use the JS.Export annotation. Furthermore, the authors of exported classes should reduce the amount of code that is reachable from the methods of an exported class.