marko/test/autotests/widgets-browser/widget-custom-events-declarative/components/app-bar/widget.js

function Widget(config) {
    this.label = config.label;
    this.name = 'app-bar';

    var $el = this.$();

    this.appendHtml = function(html) {
        $el.append(html);
    };
}

Widget.prototype = {
    emitTestEvent: function() {
        this.emit('testEvent', 'a', 'b');
    }
};

exports.Widget = Widget;