Discover how type systems can enhance your JavaScript development skills in this insightful React Conf 2017 talk. Explore the concept of types, understand type errors, and learn about various type-checking methods including linters, runtime checks, and static analysis. Delve into Flow, a static type checker for JavaScript, and see how it can help you write more robust code. Examine clever coding techniques, invariants, and the benefits of writing types first. Gain practical knowledge through examples, including how to handle state management more effectively using type systems.