kumascript with promises

gistfile1.js

//based on:
//https://github.com/lmorchard/kumascript/blob/master/lib/kumascript/templates.js

var q = require('q');

var EJSTemplate = ks_utils.Class(BaseTemplate, {
    initialize: function (options) {
        this._super('initialize', arguments);
        this.template = require('ejs').compile(this.options.source);
    },
    execute: function (args) {
        var d = q.defer(),
            vm = require("vm"),
            ctx = {
                "arguments": args
            };

        //q.call starts off a chain of async actions.
        //Assumes below that this.template() returns a promise
        q.call(function () {
            return this.template(ctx);
        }.bind(this))
        .then(function (result) {
            return result.trim();
        })
        .then(d.resolve, d.reject);

        return d.promise;
    }
});