[]ts编译为js后

var AudioCommand = (function(_super) {
function AudioCommand() {
AudioCommand.__super.call(this);
}

__class(AudioCommand, 'model.resource.audio.controller.AudioCommand', _super);

1.AudioCommand.__super.call(this);
2.__class(AudioCommand, 'model.resource.audio.controller.AudioCommand', _super);
1,2这两个句代码是什么意思在ts里面如何写