marko/packages/runtime-class/test/api/fixtures/renderToString-callback-async/components/test-async/renderer.js

var promiseProvider =
  require("../../../../../__util__/async-helpers").promiseProvider;

module.exports = async function (input, out) {
  var asyncOut = out.beginAsync();
  await promiseProvider(1);
  asyncOut.write("[async]");
  asyncOut.end();
};