Simple Haxe file

Dummy.hx

package ;

import flash.display.MovieClip;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.external.ExternalInterface;
import flash.Lib;

class Dummy extends MovieClip {
	private static var _ready:Bool = false;

	static function main () {
		flash.Lib.current.addChild( new Dummy() );
	}
	public function new () {
		super();
		if (ExternalInterface.available) {
			ExternalInterface.addCallback( "ready",
				function () : Bool { return _ready; }
			);
		}
		addEventListener( Event.ADDED_TO_STAGE,
			function (e:Event) : Void { _ready = true; }
		);
	}
}