Every project starts with good code but if care is not taken after few months realization sinks in that the code is not maintainable at all. Everyone scares to touch the code. How do you come out of this? Well, you go back to drawing board and improve one thing at a time. With Confidence, safety toolkit and shared mental model it becomes easier to enforce correctness into the codebase and that's what we did to rescue our frontend app at Last9.