Could not find module rsvp imported from fetch

[mydea]

When trying to setup embroider for our app, I get this error:

Uncaught Error: Could not find module `rsvp` imported from `fetch`

I tried to also install rsvp (yarn add rsvp --dev) in my app but it didn't help.

[rwjblue]

@mydea - What ember-source version?

[mydea]

ember-source@3.27.3, and Embroider at 0.41.0.

[mydea]

I played around with it a bit, trying to make it recognize rsvp, but couldn't get it to work. I ended up with this kind of workaround (which is decent I'd say, but also rather circumvents the problem) here: #623

[rwjblue]

Hmm, Embroider should be able to resolve rsvp module if imported directly. I wonder which of the compat flags you have setup? If you have most of the strictnesss / compat flags setup, I'd bet that the issue is that this isn't a "real" module (we are defining an AMD module) so it doesn't get replaced by the webpack require mechanism (and with strictness setup, we don't eagerly define all the modules for compatibility purposes anymore).

[mydea]

It happens once I switch staticAddonTrees on!

[SergeAstapov]

For history, probably related to embroider-build/embroider#1195