generators throws exception

I try to use ES6 generators in a new clean ember-cli project but it doesn’t run in the browser because of Uncaught ReferenceError: regeneratorRuntime is not defined. It seems there is a missing global/dependency in my service?

function* testGenerator(fixtures) {
  for(let i = 0, max = fixtures.length; i < max; ++i) {
    yield foo(fixtures[i]);
  }
}

6to5 generates this source for my example:

var testGenerator = regeneratorRuntime.mark(function testGenerator(fixtures) {
  var i, max;
  return regeneratorRuntime.wrap(function testGenerator$(context$1$0) {
    while (1) switch (context$1$0.prev = context$1$0.next) {
      case 0:
        i = 0, max = fixtures.length;
      case 1:
        if (!(i < max)) {
          context$1$0.next = 7;
          break;
        }
        context$1$0.next = 4;
        return foo(fixtures[i]);
      case 4:
        ++i;
        context$1$0.next = 1;
        break;
      case 7:
      case "end":
        return context$1$0.stop();
    }
  }, testGenerator, this);
});

I’m using ember-cli@0.1.12 and ember-cli-6to5@3.0.0

[ecengels88]

For those who are running into this issue, see: https://github.com/babel/ember-cli-babel#polyfill

[ghost]

ok, thanks very much, I’ll try this. Just before you posted this, I was able to get my generator working by using the Bower package babel-polyfill and then including in the Brocfile:

app.import('bower_components/babel-polyfill/browser-polyfill.js', { prepend: true });