Wu.js – Higher order functions for ES6 iterators

In plain words

Wu.js is a JavaScript library that provides higher order functions like map, filter, and reduce for ECMAScript 6 iterators. It enables developers to work with streams of data using lazy and infinite sequences. The library simplifies iterator handling by allowing these operations to work seamlessly with for-of loops and generator functions, letting developers process data without manually calling the iterator's next method. It is designed for JavaScript developers working with ES6 code.

written from the facts on this page · September 2026

From the sources

wu.js is a JavaScript library providing higher order functions (such as map , filter , and reduce ) for ECMAScript 6 iterators. Iterators represent a stream of data. To get the next value in the stream, you call the iterator's next method. This enables both lazy and infinite sequences. Most of the time you don't need to call next yourself: when you use a for-of loop, you're using iterators behind the scenes. Anything can create iterators — they just need to make an object with the proper next interface — but generator functions and the yield expression provide convenient syntactic sugar. wu.js provides the higher order functions you've come to love from working with arrays (such…from fitzgen.github.io

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