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Upgrading Ember breaks namespaces? #349

@BlueRaja

Description

@BlueRaja

We're attempting to upgrade from Ember 2.18 to Ember 3.16. Most things are working, but our CSS is borked. The problem seems to be that ember-component-css is injecting namespace classes in the CSS, but not in the actual DOM.

We're still using the old syntax for most things, including

export default Component.extend({
  ...
});

Could this be the cause?

Workaround:

In environment.js, add

const ENV = {
  ...
  'ember-component-css': {
    namespacing: false,
  },
}

then everywhere you are using &{ ... } in the root of your SCSS needs to be replaced with a manually-created root class

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