Class MyObserver

packages/core/src/__tests__/unit/lifecycle.unit.ts:106–109

    it('returns true for class instance with lifecycle methods', () => {
      class MyObserver implements LifeCycleObserver {
        async start() {}
        async stop() {}
      }
      const instance = new MyObserver();
      expect(isLifeCycleObserver(instance)).to.be.true();
    });