The **async‑future** library provides a lightweight promise‑style API for Node.js and browsers that lets developers write asynchronous code with familiar `try‑catch‑finally` semantics, chaining (`then`, `catch`, `finally`) and utilities such as `Future.wrap`, `Future.all`, and a resolver for err‑back style functions. It is aimed at JavaScript programmers who want a simple, exception‑friendly alternative to callbacks and other promise libraries (e.g., jQuery Deferred, Q) for managing complex asynchronous control flow.