Overview

A collection of small, type-safe, performant & immutable iteration utilities for arrays.

# npm
npm i --save @weser/array

# yarn
yarn add @weser/array

# pnpm
pnpm add @weser/array

For the best developer experience, we recommend importing all methods under a namespace:

import * as array from '@weser/array'

const doubled = array.map([1, 2, 3], (value) => value * 2)
const filtered = array.filter([1, 2, 3], (value) => value > 1)

This allows you to use the methods with a clear namespace prefix, making it easy to distinguish them from native array methods.

Because JavaScript's native "functional" APIs such as forEach, reduce, map and filter are slow and limited to arrays only.
There're many different utility packages out there already, e.g. lodash (new tab). But lodash's reduce method itself is 4.5kb gzipped which is way too much for a simple array/object reduce utility.

Additionally, it provides better type inference compared to the built-in methods.