code: function transpile() {
    return exec('node_modules/.bin/ngc -p tsconfig.json', function (err, stdout, stderr) {
      console.log(stdout);
      console.log(stderr);
      if (err !== null) {
        process.exit(1);
      }
    });
  }
docs: Build the components 
  Since the gulpngc is no longer being supported we need to us ngc
  
  @returns {ChildProcess}