How does TypeScript understand the types of our variables in every single line? How can we narrow down types to more specific ones? This episode is an introduction to TypeScript Control Flow Analysis. Discover all the available Type Guards. Get familiar with the weird parts of JavaScript, like Coercion. Understand how you can create your own Type Guards using type predicates. We will also learn how to ensure that a switch statement exhausts all possible values.
TLTR; Typescript \ Core Concepts