importScripts('https://cdn.polyfill.io/v2/polyfill.min.js?features=Promise');

self.addEventListener('message', function(event) {
  // we could have multiple listeners for different event.data
  // instead we just do a simple smoke test for Promise.resolve()
  var id = event.data.id;
  try {
    Promise.resolve()
      .then(function() {
        self.postMessage({id: id, success: true});
      })
      .catch(function() {
        self.postMessage({id: id, success: false, message: 'resolve rejected!'});
      });
  } catch (error) {
    self.postMessage({id: id, success: false, message: error.message});
  }
});