Idea for a 'tee' reporter to allow multiple reporters in mocha

MochaTeeReporter.js

define(function() {
    'use strict';
    /**
     * Create a 'tee' reporter that just pipes to wrapped reporters.
     * Usage: mocha.setup({ reporter: MochaTeeReporter(Reporter1, Rep2, Rep3, ...) });
     * @return {Reporter} Suitable for mocha usage
     */
    return function(/* reporters */) {
        var reporterCtors = [].slice.call(arguments);
        var reporters = [];
        return function MochaTeeReporter(runner) {
            reporterCtors.forEach(function (Ctor) {
                // The problem is that there is only one runner and reporters
                //  are expected to mutate its 'stats' property
                reporters.push(new Ctor(runner));
            });
        };
    };
});