Stop writing nested, imperative control flows. Learn how to build a type-safe, fluent pattern matcher using the Method Chaining pattern in TypeScript. The native switch statement in JavaScript and TypeScript is a relic of C-style programming. While it gets the job done for basic primitive checks, it quickly turns into an architectural eyesore when your application scales. Standard switch blocks are strictly imperative. They suffer from scope leakage (unless you wrap every case in blocks {})...