var Builder = require("systemjs-builder");
 
// set it up with your base URL and the path to your config file.
var builder = new Builder("./build", "build/systemjs.config.js");
 
// run the bundler
builder.bundle("app.js", "dist/app.bundle.js", { 
    normalize: true,
    sourceMaps: true,
    sourceMapContents: true
});