node-fetch-response-matcher (node.js)

Chai.js plugin with declarative asserts for node-fetch response API.

scala-like-option (node.js)

Maybe monade for javascript, to avoid null checking and handling option contained in functional manner

rolling-window-throttler (node.js)

A throttling lib for rolling window for specific keys.

node-either-monad (node.js)

A functional way to handle response from a function that returns either of two completely defferent objects