This article explains the differences between TypeScript’s any, unknown, and never types, shows when each should be used, and provides practical code examples to help developers write safer and more flexible TypeScript code.
This article explains how TypeScript’s type system works, why the any type is unsafe, how to convert any to the top‑level unknown type for safer code, and demonstrates practical patterns such as subtype reasoning, nominal vs structural typing, and type‑safe wrappers using runtime checks.
This article shares practical experiences and techniques for migrating a medium‑size Koa2 project to TypeScript with Midway, covering tsconfig settings, the dangers of any, strategies using unknown, strict compiler options, type guards, assertion functions, and how to construct a concise, reusable type system for backend models.
