apos executar meu codigo o console do js informa o erro:
(SystemJS) ListaNegociacao is not a constructor TypeError: ListaNegociacao is not a constructor at new NegociacaoController (http://localhost:3000/js/app/controllers/NegociacaoController.js:67:54) at execute (http://localhost:3000/js/app/controllers/NegociacaoController.js:150:36) Error loading http://localhost:3000/js/app/boot.js
repositorio: https://github.com/jhonatanmsc/js-class-alura
