Middleware Flow Control

middleware-flow is a JavaScript library providing enhanced control flow structures for Express-style middleware. It extends the basic sequential execution model by offering utilities for `series`, `parallel`, `parallelWait`, `each`, `or`, `and`, `if().then().else()`, `syncIf`, `asyncIf`, and `mwIf` operations. First published in 2015 and currently at version 0.8.0, it was developed primarily for CommonJS environments, common in older Node.js and Express applications, making it a useful tool for orchestrating complex middleware pipelines. Its key differentiator lies in its declarative API for non-sequential middleware execution, particularly for concurrent tasks or conditional branching, which are not natively provided by Express's core `app.use()` patterns. The project's development appears to be abandoned, with its last publish date being 11 years ago, and no further updates are expected.