marble

Marble.js is a functional reactive Node.js framework for building server-side applications, based on TypeScript and RxJS. The core concept of Marble.js assumes that almost everything is a stream. The main building block of the whole framework is an Effect, which is just a function that returns a stream of events. With the big popularity of RxJS Observable, you can create a referential transparent program specification made up of functions that may produce side effects like network, logging, database access, etc. Using its monadic nature we can map I/O operations over effects and flat them to bring in other sequences of operations. RxJS is used as a hammer for expressing asynchronous flow with monadic manner. Marble.js doesn't operate only over basic HTTP protocol but can be used also for general MDA (Message-Driven Architecture) solutions, including WebSocket, microservices or CQRS, where the multi-event nature fits best.