Yet Another _Ember is undefined error

Before opening this i removed node_modules and yarn.lock so the environment was as clean as possible, just to confirm it was still an issue.

yarn why ember-cli-babel | grep @7                         
=> Found "ember-cli-babel@7.20.5"
=> Found "<internal-module>#ember-power-select#ember-cli-babel@7.20.5"
=> Found "ember-paper#ember-power-select#ember-cli-babel@7.20.5"
=> Found "<internal-module-2>#ember-text-measurer#ember-cli-babel@7.20.5"
=> Found "ember-paper#ember-text-measurer#ember-cli-babel@7.20.5"
=> Found "ember-power-datepicker#ember-power-calendar#ember-cli-babel@7.20.5"
=> Found "<internal-module-2>#ember-concurrency#ember-cli-babel@7.20.5"
=> Found "ember-paper#ember-concurrency#ember-cli-babel@7.20.5"

yarn why babel-plugin-ember-modules-api-polyfill | grep @2 
=> Found "babel-plugin-ember-modules-api-polyfill@2.13.4"
=> Found "ember-data#ember-cli-babel#babel-plugin-ember-modules-api-polyfill@2.13.4"

Still getting Uncaught ReferenceError: _Ember is not defined

From the stack, it looks to be coming out of ember-concurrency

Pre-transpiled

state: computed('isDropped', 'isCanceling', 'hasStarted', 'isFinished', function() {
    if (get(this, 'isDropped')) {
      return 'dropped';
    } else if (get(this, 'isCanceling')) {
      return 'canceled';
    } else if (get(this, 'isFinished')) {
      return 'finished';
    } else if (get(this, 'hasStarted')) {
      return 'running';
    } else {
      return 'waiting';
    }
  }),

Transpiled

state: (_Ember = Ember).computed.apply('isDropped', 'isCanceling', 'hasStarted', 'isFinished', function () {
      if (Ember.get(this, 'isDropped')) {
        return 'dropped';
      } else if (Ember.get(this, 'isCanceling')) {
        return 'canceled';
      } else if (Ember.get(this, 'isFinished')) {
        return 'finished';
      } else if (Ember.get(this, 'hasStarted')) {
        return 'running';
      } else {
        return 'waiting';
      }
    }),

[rwjblue]

You should be able to ensure that ember-data@3.2.0 gets the fixed version of babel-plugin-ember-modules-api-polyfill.

[rwjblue]

I think this is fixed now (for a while), closing…