export default function(node, {evaluate, scope}) {
  const test = evaluate(node.test, {scope});
  if (test.async) {
    return {
      async: true,
      value: (
        Promise.resolve(test.value)
          .then((test) => evaluate(test ? node.consequent : node.alternate).value, {scope})
      ),
    };
  }
  return evaluate(test.value ? node.consequent : node.alternate, {scope});
}