TypeScript‑Mix is a lightweight library that lets developers compose classes from reusable mixins using ES7 decorators (`@use` and `@delegate`). It works with both object‑literal and class‑based mixins, preserves TypeScript’s type‑checking and IntelliSense, and avoids the verbosity of the official `applyMixins` pattern, making it ideal for TypeScript developers who want clean, interface‑driven multiple‑inheritance without sacrificing inheritance semantics.