THE STRANGE BEHAVIOR OF THE VOID TYPE IN TYPESCRIPT

Summary from the TLDR Web Dev newsletter

In TypeScript, the `void` type signifies "nothing" and is mostly used to declare the return type of functions. While you can declare a variable as `void`, it's generally not recommended as it can only hold the value `undefined`, making it impractical. Functions declared with a `void` return type are expected to return `undefined`, either explicitly or implicitly. However, due to how TypeScript handles function type declarations and shorthand syntax, functions with a `void` return type can actually return non-`undefined` values - it's important to note that this is a special case to accommodate common usage patterns.