gistfile1.js

exports.ninvoke = ninvoke;
function ninvoke(object, name /*, ...args*/) {
    var args = array_slice(arguments, 2);
    return napply(object[name], object, args);
}

exports.ncall = ncall;
function ncall(callback, thisp /*, ...args*/) {
    var args = array_slice(arguments, 2);
    return napply(callback, thisp, args);
}

exports.nbind = nbind;
function nbind(callback /* thisp, ...args*/) {
    if (arguments.length > 1) {
        var thisp = arguments[1];
        var args = array_slice(arguments, 2);

        var originalCallback = callback;
        callback = function () {
            var combinedArgs = args.concat(array_slice(arguments));
            return originalCallback.apply(thisp, combinedArgs);
        };
    }
    return function () {
        var deferred = defer();
        var args = array_slice(arguments);
        // add a continuation that resolves the promise
        args.push(deferred.makeNodeResolver());
        // trap exceptions thrown by the callback
        fapply(callback, args)
        .fail(deferred.reject);
        return deferred.promise;
    };
}