Mirage acceptance tests not working with ember-cli-babel includePolyfill enabled

[bsaff]

So I've got a very interesting error here. My steps:

• Started a new ember app (ember-cli 2.13.1)
• Generated an acceptance test for visting '/'.
• Verified that all tests pass.
• Installed ember-cli-mirage.
• Verified all tests still pass.
• In ember-cli-build.js set babel's includePolyfill setting to true.
• Run tests

Results: A series of tests break with the following error appearing

not ok 23 PhantomJS 2.1 - Global error: Error:
TypeError: Object is not a constructor (evaluating '(0, _lodash_defineProperty['default'])') at http://localhost:7357/assets/test-support.js, line 6993
    ---
        Log: |
            { type: 'error',
              text: 'Error: \nTypeError: Object is not a constructor (evaluating \'(0, _lodash_defineProperty[\'default\'])\') at http://localhost:7357/assets/test-support.js, line 6993\n' }

[rwjblue]

Seems good to have an issue over here also, but I believe this the same as ember-cli/ember-cli#7001 and mike-north/ember-lodash#103.

[bsaff]

I'm not currently testing polyfill-dependent features so I've temporarily disabled polyfill for testing until this issue is resolved. code below:

module.exports = function(defaults) {
  var env = EmberApp.env();
  // enable polyfill as long as we are not testing
  var notTesting = env !== 'test';
  var app = new EmberApp(defaults, {
    'ember-cli-babel': {
      includePolyfill: notTesting
    }
  });
...

[simonihmig]

@bsaff I don't think that workaround is applicable in general. If you don't need the polyfill for PhantomJS, you certainly don't need it for any real browser then. Maybe this is working for you, because your tests are not touching your code that depends on the polypill?

[bsaff]

@simonihmig that's true. currently not testing polyfill-dependent features. I'll make a note

[vmalloc]

Also hitting this issue. Any news on how to avoid it?

[stefanpenner]

@vmalloc look slike @rwjblue merged a fixed.

[simonihmig]

This may be needed to get merged as well: mike-north/ember-lodash#105

[fushi]

Pretty sure this is a dupe of ember-cli/ember-cli#7001