Continuation-Local Storage (Hooked)

cls-hooked is a Node.js library that provides Continuation-Local Storage (CLS), a mechanism akin to thread-local storage but adapted for Node.js's asynchronous, callback-based execution model. It enables developers to maintain and implicitly pass contextual data across asynchronous operations without explicit parameter passing. The current stable version, 4.2.2, primarily targets Node.js versions `^4.7 || >=6.9 || >=7.3 || >=8.2.1`. Its key differentiator lies in its implementation, which leverages Node.js's internal, lower-level APIs: `AsyncWrap` for Node.js versions prior to v8 (an unofficial API), and the `async_hooks` API for Node.js v8.2.1 and newer (which is considered experimental). This approach distinguishes it from its predecessor, `node-continuation-local-storage`, which relied on the now-deprecated `async-listener`. The project's release cadence is largely influenced by the evolution and stability of these underlying Node.js APIs, aiming to provide a robust CLS implementation despite the experimental nature of its core dependencies.