How to declare themes, modes and workers within ember-engines

[ghost]

I am currently moving the admin interface from the main application into an ember-engine. So far i am unable to import or declare the ember-ace settings.
Any suggestions?

[dfreeman]

I would expect the standard pattern for configuring an engine to work, something like:

module.exports = EngineAddon.extend({
  ace: {
    // ember-ace config here
  }
});

If it doesn't, that's likely a bug (either here or in ember-engines)

[ghost]

I tried to declare the settings exactly like this.
Sadly it dosen't work and so far I couldn't figure out why.

[dfreeman]

Is your engine lazy or eager? It's possible you're hitting ember-engines/ember-engines#386

[tomwayson]

We are also running into an error after moving our code that uses ember-ace from a dedicated admin app to a lazy engine in our main app. Here's how the engine's index configures ember-ace:

module.exports = EngineAddon.extend({
  name: require('./package').name,

  // Configure Ace Editor
  // For engines, it seems we need to have .ace at the top level...
  // whereas for addon's it needs to be wrapped into .options: {...}
  ace: {
    modes: ['json', 'html', 'css'],
    workers: ['json', 'html', 'css'],
    exts: ['language_tools', 'searchbox'],
    // If you use this in another engine, update this location
    // [CG: 9 July 19] - I don't know when this stopped working, but using
    // worker global scope is the only way I could get this to work again
    // workerPath: '/engines-dist/layout-editor-engine/assets/ace'
  },

  isDevelopingAddon: function () {
    return true;
  },

  lazyLoading: {
    enabled: true
  }
});

When I run ember s and transition to the lazy engine's route, everything is fine, but later once the {{ember-ace}} component is rendered, I see an ace is not defined error in the console:

My expectation is that the ace.js file would be in-lined into the egine-vendor.js the way that it is inlined into an app's vendor.js.

I followed the above link to the ember-engines issue, and it's not obvious to me what, if any, additional actions I would need to take in order to ensure that the ace code is in-lined into my lazy engine-vendor.js. That issue (like this one) is a couple years old, and we're on the latest ember-engines (0.8.2) and and ember-ace (2.0.1), so I don't know if the proposed (and seemingly hacky) fixes are still needed.

Am I missing something?