Ramda

Ramda is a functional programming library for JavaScript that emphasizes immutability and side-effect-free functions. It provides utility functions for working with data in a functional style, focusing on function composition and currying by default. Unlike utility libraries like Lodash, Ramda's functions are automatically curried and take data as the last parameter, making them ideal for point-free programming. The library includes functions for array manipulation, object transformation, logic operations, and function utilities that encourage declarative code. Ramda promotes writing cleaner, more testable code by avoiding mutations and keeping functions pure. It's particularly popular among developers building complex data transformations and those adopting functional programming principles in JavaScript.