JSExport class

Annotation to mark Dart classes as exportable and allow instance members to be wrapped with an object literal.

Dart classes with this annotation can be used for exporting in js_util's createDartExport, which returns a JS object that forwards to the Dart class. You may either annotate specific instance members to only export those members or you can annotate the entire class (which will export all instance members) to mark the class as exportable.

Classes and mixins in the hierarchy are included only if they are annotated or specific members in them are annotated. If a superclass does not have an annotation anywhere, its members are not included. Only concrete instance members can and will be exported, and it's an error to annotate other members with this annotation. In order to do renaming for members, you can provide a name for the @JSExport on the members e.g.

class Export {
  @JSExport('printHelloWorld')
  void printMessage() => print('Hello World!');
}

which will then set 'printHelloWorld' to forward to printMessage in the object literal.