JSPM

Get the first fulfilled promise that satisfies the provided testing function

Get the first path that exists on disk of multiple paths

Map over promises concurrently

Create an error from multiple errors

Get an iterator for any JS language value. Works robustly across all environments, all versions.

Isomorphic, functional type-checking for Javascript

Convert a string/promise/array/iterable/asynciterable/buffer/typedarray/arraybuffer/object into a stream

Iterate over promises serially

Filter promises concurrently

Reduce a list of values using promises into a promise for a value

Minimal zero-dependency utilities for using JavaScript Iterables in all environments.

Iterate any JS iterator. Works robustly in all environments, all versions.

Map over promises serially

A tiny but capable push & pull stream library for TypeScript and Flow

Run promise-returning & async functions in series, each passing its result to the next

Run promise-returning & async functions concurrently with optional limited concurrency

Wait for any promise to be fulfilled

Wait for a specified number of promises to be fulfilled

Create an error from multiple errors

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

A finite state machine iterator for JavaScript

Checks if a given object is iterable

Composable functional (async) iterable helpers

An iterable that you can push values into

Get the default iterator or async iterator for an iterable or async iterable

Test whether all promises passes a testing function

Iterable wrapper that add methods to read ahead or behind current item.

Convert Node.js streams to streaming iterables

Generate random numbers that are consecutively unique

The iterable toolbox

Utility to "pipe" async iterables together

`Promise.all` and `Promise.allSettled` with concurrency option and async iterable result

Streaming length prefixed buffers with async iterables

Memory-Aware Statistical Calculations

A consumable stream demultiplexer.

Run promise-returning & async functions in series

Fun with Iterables

Read an exact number of bytes from a binary (async) iterable

An alternantive to EventEmitter using consumable streams.

Converts iterable objects into readable streams.

Simple async iterables for websocket client connections

A standard for JS callbacks

Set of classes used for async prefetching with backpressure (IterableMapper) and async flushing with backpressure (IterableQueueMapper, IterableQueueMapperSimple)

Enable basic async test looping in Mocha

Concat all buffers/strings yielded from an async iterable into a single BufferList/string

Typescript wrapper for pg-query-stream

Cycle through the items of an array

Chai assertions for iterable objects

The iterable toolbox

A better Array.prototype.every(). Supports iterables, whitelist testing, and more.

Applies a callback to each value outputted by an iterable.

A blazing fast recursive directory crawler with lazy sync and async iterator support.

Fast cartesian product

Extend built-in collections with weak references for efficient garbage collection and optimal performance in memory-intensive applications with IterableWeakSet, IterableWeakMap, and WeakValueMap.

Check if an Iterable is empty

ndjson to async iterator

An iterable transform that apply replace to all items

Create handshakes for binary protocols with iterable streams

Create an error from multiple errors. This is a fork of sindresorhus/aggregate-error, but with CommonJS support.

Array.prototype.map analog for iterables.

Map over promises concurrently. This is a fork of sindresorhus/p-map, but with CommonJS support.

A toolbox to check if an object is iterable, an iterator or a generator, etc.

Efficient structure representing a sequence of elements, with powerful operations for TypeScript

Functional sequences for processing iterable data in JavaScript

Join (SQL-like) two iterables by a common key.

🤖 Repeat tests. Repeat tests. Repeat tests.

Split an iterable into evenly sized chunks

Wrapper for Iterable API

Cartesian product for big inputs

Test whether some promise passes a testing function

A collection of utility functions for working with randomness.

Resolve and reduce an array of promises

merges async iterators

Convert an async iterator/iterable to a readable stream

Utilities to manipulate async iterable of chunks of strings

type AnyIterable<T>

Backoff generators usable as simple iterables

turns WebSocket into async iterator

An iterable is a sequence of values.

ES2015 generator (iterable iterator) for cartesian product. Put combinatorial explosion back in the kennel.

Asynchronous batched iterable for (mongo) cursors

Typesafe API for processing iterable data in TypeScript and JavaScript

A library built for ES6 iteration protocol.

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

An unprotected bi-directional linked list. Useful for implementing other collections.

typeguard functions to determine whether or not a value is iterable or an iterator in the ES6 sense

Iterable mapping functions for JavaScript

Convert an observable to ES6 async generator.

Iterable to Array for JavaScript

A collection of utilities for iterations.

Observe changes to the DOM using an async iterable — A nicer API for MutationObserver

Use requestAnimationFrame as an async iterable, in any JavaScript environment

An iter function for JavaScript

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

Query library for ECMAScript iterables.

Javascript Iterable/Iterator/Generator-function utilities.

Basic callbag factories and operators to get started with

Combine Multiple Asynchronous Iterators in one (not a sequence)

Iterator next function for JavaScript

Tiny yet feature-packed (async) iteration toolkit.

A range function for JavaScript

A counting function for JavaScript

A simple and fast FIFO collection for enqueuing and dequeuing items.

Extended itertools port for TypeScript and JavaScript. Provides a huge set of functions for working with iterable collections (including async ones)

Iterable slicing functions for JavaScript

Checks entity if array, arguments, iterable or array-like.

Iterable WeakSet / WeakMap using ES2021 WeakRef

A utility for creating an iteratively cached (memoized) result of an iterable.

Iterable zipping functions for JavaScript

Iterable consumption for JavaScript

Item repetition for JavaScript

Iterable reducers for JavaScript

Iterable reversion for JavaScript

Read file, stream, string, buffer line by line without putting them all in memory. It supports cool features like `custom line separator`, `various encodings`, `reverse mode`, `iterable protocol`

A lazy functional iteration library supporting sync, async, and concurrent iteration.

Wait for any promise to be fulfilled. This is a fork of sindresorhus/p-any, but with CommonJS support.

Iterable sorting for JavaScript

Iterable cycling functions for JavaScript

Wait for a specified number of promises to be fulfilled. This is a fork of sindresorhus/p-some, but with CommonJS support.

Iterable chaining for JavaScript

Read text file (remote over HTTP(S) or local) line by line as async iterator, with Node, browsers and Deno

Ensures that a given input can be used as a set

A doubly (bidirectional) linked list. Acts as a safe, value focused wrapper for a linked-node-list.

Simple async iterables for websocket client connections

Iterable cardinality library for JavaScript

Iterable filtering functions for JavaScript

AsyncIterable to Array conversion for JavaScript

LINQ-like syntax using tagged templates.

Iterable items grouping for JavaScript

Replace your slow Array based fixed length ring buffer, or circular queue, with ring-buffer. RingBuffer is roughly 10x faster, and is a drop in replacement.

An ObjectIterator implementation.

Iterable windowed iteration for JavaScript

Extended iterable class, providing lazy array-like methods with automatic async and return/throw forwarding

Lazy list with high tree-shaking affinity and easy customization.

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

An es6-style immutable Stack

Concurrency using chainable async iterables, such as task pool, event queue, pub/sub, merge, chunk, throttle, etc.

List all directories in a given directory

Several hooks for using Wonka streams with React

combine multiple Iterable or AsyncIterable objects into one

Advanced Array utility functions. Extra arguments for map and forEach including first, last, brk, odd, even, penultimate, and more!

transform input into equally-sized blocks of output using async iterators

Make a JS Iterator forkable.

Super efficiently compares two sorted lists (arrays, strings, anything that is iterable actually).

Iterable WeakMaps and WeakSets. Provides WeakRefMap and WeakRefSet which store values using WeakRefs and clean themselves up when garbage collected.

A better sync and async iterator API.

Cutie extension for the iterable protocol in JavaScript.

JavaScript iterable transformation library

A fully streaming regular expression engine

Querying infrastructure for JavaScript, with Linq style

iterable tools

Create an iterator for generating uniformly distributed pseudorandom numbers between 0 and 1.

HashMap, LinkedHashMap and Higher Order Functions for all other Iterables, such as Map, Set and Array

Get the first path that exists on disk of multiple paths

Standard utilities codes and types.

Create an iterator for generating pseudorandom numbers drawn from a continuous uniform distribution.

Fetch Server-Sent Events (SSE) as an async iterable

A bundle of data collections in TypeScript

An agnostic solution to work with any Datastore

Utilities for building and transforming maps using iterables and streams.

Basic callbag factories and operators to get started with

Fetch streaming LLM responses as an async iterable

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

Map that keeps track of the hits and misses

Create an iterator for generating pseudorandom numbers drawn from a beta distribution.

Read text file (remote over HTTP(S) or local) line by line as async iterator, with Node, browsers and Deno

Create an iterator which invokes a unary function accepting a single numeric argument for each iterated value.

Lazily evaluated utility library

Test if a value is iterable-like.

Functions for working with built-in collection types

Functions for working with iterators in JavaScript, with TypeScript

Promise.all + map for all iterables

Get the first path that exists on disk of multiple paths

Functional sequences for processing iterable data in JavaScript

Object streaming the way it should be

An es6-style iterable queue

Run async fn for each item in (async) iterable

The goal is to create a package that provides useful functions for iterables.

Fast iterator library

Compute the product of all iterated values.

protocol and utilities for light-weight data streams

A Javascript implementation of a collection based on Array (from Javascript/Java/Kotlin/C#/PHP), Set (from Javascript/Java/Kotlin) and List (from Java/Kotlin/C#)

Tools to create ES6 iterators

Create an iterator which returns a subsequence of iterated values from a provided iterator.

Set of methods allowing simplify work with promises in cycle such as: forEach, map, find, filter, reduce, while, transform. Besides there are methods for comfortable work with promises or asynchronous operations - all, retry, timeout.

iso-json-tree

Map over promises concurrently

Iterate over async iterable with concurrency limit.

Perform queries on collections in the manner of C#'s System.Linq in JavaScript

Tests a value’s type against a string like 'positive integer' or 'non-empty map'.

Create an iterator which skips the last value of a provided iterator.

Transfigure JSON. Provides JSON objects a fluent, Array-like interface for data transformations.

Compute the arithmetic mean over all iterated values.

An ES6 Iterable utility library with TypeScript support

handling iterables like Arrays.

Convert any callback-based sequence of values into a full-fledged async iterable

Iterable API library

Join an Iterable of strings for JavaScript

Find files by patterns in directories, upwards or downwards from other paths.

Map over promises concurrently fast

Functional programming with lazy immutable iterables

A helper to create async generators

Concatenate an Iterable of strings for JavaScript

Breaks down iterators in to chunks

fp-ts binding for ixjs

Create an iterator which invokes a function for each iterated value.

A TypeScript blazing fast recursive directory crawler with lazy sync and async iterator support, fork from get-all-files by @TomerAberbach

A collection of sources and operators for [Wonka](https://github.com/kitten/wonka).

Joins values together.

Transforms items of an async iterable concurrently

Join strategies for Iterables, Maps, and Arrays.

Create an iterator for generating pseudorandom numbers drawn from a lognormal distribution.

Iterable copy function for JavaScript

Turns browser fetch stream into asynchronous iterator

Extensible Iterable class creation utilities

Updates values based on map function.

Iterable WeakMap, WeakSet and WeakValue.

Iterable item selection for JavaScript

Iterator utility functions

A circular doubly linked list implementation in JavaScript

Runnerty module: Iterable executor

Transforms ordinary objects into iterables. You can use a for of to iterate through any object's properties

Create an iterator which introduces additive white uniform noise.

Create an iterator for generating pseudorandom numbers drawn from a triangular distribution.

A collection of React hooks for [Wonka](https://github.com/kitten/wonka) and [WonkaExtras](https://github.com/mobily/wonka-extras).

Iterate over keys in Redis, using the SCAN command.

An iterable is a sequence of values {web}.

allows iterating an array of elements with an easy-to-read syntax and gives functionality to the collection and the elements it iterates.

Fast and lightweight library for lazy operations with iterable objects.

Create a transform stream from an async iterator

Create an iterator for generating pseudorandom numbers drawn from a normal distribution.

Utilities for Iterable

Create an iterator which evaluates the binary logarithm for each iterated value.

The magic of JavaScript async iterators in React ⛓️ 🧬 🔃

Concurrent union

Create circular, iterable data structures in JS

Create an iterator which introduces additive white Gaussian noise.

Create an iterator which introduces additive white Laplacian noise.

Create an iterator for generating pseudorandom numbers drawn from a discrete uniform distribution.

Library for working with collections using iterators.

Compose chains of functions to manipulate data via synchronous and asynchronous iterators

Some great tools for iteration inspired by python.

A ring buffer that manages memory in chunks to support large capacity for data bursts with low overhead when small.

Create a string by repeating a smaller one for JavaScript

Create an iterator which iteratively computes a cumulative arithmetic mean of absolute values.

Async Iterable Queue

Create an iterator which evaluates the Riemann zeta function for each iterated value.

Create an iterator which computes the half-value versed sine for each iterated value.

An events based queue iteration JavaScript module

Simple utility for enhancing any Array with constant O(1) access for properties by unique key