Map Reduce

An ESnext spec-compliant iterator helpers shim/polyfill/replacement that works as far down as ES3.

Array methods for ES6 Iterators

Walk any kind of tree structure depth- or breadth-first. Supports promises and advanced map-reduce operations with a very small API.

Isomorphic map-reduce function to flatten an array into the supplied array

Small library to simplify working with Generators and Iterators in Javascript / Typescript

Make array iteration easy when using async/await and Promises

Comprehensive TypeScript/JavaScript utility library with cross-environment support (Node.js, browser, web worker) providing helper functions, polyfills (ES5-ES2023), type checking utilities, and optimized implementations for better minification and code r

Convenient and dependency free wrapper for working with arrays and objects.

An inverted index that allows javascript objects to be easily serialised and retrieved using promises and map-reduce

➔ 𝐃eep standalone lib / 𝐋odash extension: ✓ eachDeep ✓ filterDeep ✓ mapDeep ✓ reduceDeep ✓ pickDeep ✓ omitDeep ✓ keysDeep ✓ index ✓ condenseDeep ⋮ Parents stack ⋮ Circular check ⋮ Leaves only mode ⋮ Children mode ⋮ cherry-pick ⋮ esm

A lean Promises and Async lib for ES6/ES7

ES6 Promise Shim

Utilities for consuming, creating and manipulating node streams.

Component-wise operations on ndarrays

Map/Reduce promise like returned API -- Really not way to properly describe this module..

Require multiple modules using glob patterns. Supports exclusions.

A library of async iterator extensions for JavaScript including ```map```, ```reduce```, ```filter```, ```flatMap```, ```pipe``` and [more](https://github.com/jamiemccrindle/axax/blob/master/docs/API.md#functions).

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Basic operations on iterables

Async enabled each(), map(), filter() functions that work just like their standard counterparts, but can be used with async/await and also provide concurrency limiting. Includes built-in typings and JSDoc comments for IntelliSense documentation.

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Like underscore for Node streams. Map, reduce, filter, fork, pipeline and other utility functions for iterating over object mode streams.

Persistent Data Structures for JavaScript

Utilities for JavaScript Iterable and AsyncIterable

A functional query engine, that operates over streams of js objects, and can be optimized via database indexes.

A scuttlebot plugin for querying data. With [map-filter-reduce](https://github.com/dominictarr/map-filter-reduce) you can write pretty flexible queries, similar to SQL, but more javascripty.

map-filter-reduce queries for flumedb

filters/finds, maps, reduces, and sorts

Functional operation helpers (underscore-like) for working with map, filter, reduce, etc

A simple and powerful async abstraction lib for easily writing Node.js code.

An array is a collection of values, stored contiguously.

A DOM-like interface for querying Javascript Objects

An iterable is a sequence of values.

Provides LINQ-like fluent api operations for iterables and async iterables (ES2018+).

A dependable promises and async utility belt

Reducers you can use for composing reducer hierarchy like with combineReducers from redux

Useful JS polyfills and utilities written from scratch

Array.map but for objects with good TypeScript support. A small and simple integration.

Iterable and iterator library for JavaScript

Creator functions for common reducers

kafka-streams for Node.js

Functionally - A utility belt for functional JavaScript

async/await-ready array methods for JavaScript and Node.js

Allow perform every, filter, find, findIndex, forEach, map, reduce, reduceRight and some on array using Async callback

_declarative-js_ is modern JavaScript library, that helps to: - tackle array transformation with built in JavaScript array api (e.g. `array.filter(toBe.unique())`), - provide a type-level solution for representing optional values instead of null referen

Query library for ECMAScript iterables.

A collection of streams that work well with promises (through, map, reduce)

Small, chainable, set of functions like range, map, reduce, filter, zip, for iterable objects.

A familiar set of functions that operate on JavaScript iterables (ES2015+) in a similar way to .NET's LINQ does with enumerables.