declare module 'ember-testing/lib/adapters/qunit' {
    import Adapter from "ember-testing/lib/adapters/adapter";
    /**
       @module ember
    */
    /**
      This class implements the methods defined by TestAdapter for the
      QUnit testing framework.

      @class QUnitAdapter
      @namespace Ember.Test
      @extends TestAdapter
      @public
    */
    class QUnitAdapter extends Adapter {
        doneCallbacks: Array<Function>;
        asyncStart(): void;
        asyncEnd(): void;
        exception(error: unknown): never;
    }
    export default QUnitAdapter;
}