Although unit tests are important, I think it is pretty important to emphasize the importance of a static type checker like flow. It is expensive to invest in t

Although unit tests are important, I think it is pretty important to emphasize the importance of a static type checker like flow. It is expensive to invest in test coverage, and static type checking is a good proxy to help capture many regressions. Sure its not perfect, but we should encourage it as a "best practice".