JSPM

Minimal async jobs utility library, with streams support

Abstract streams to deal with the whole buffered contents.

Monadic streams

Convert Node.js streams to streaming iterables

Foundation for async iterators as streams

Allows libraries to handle various caller provided asynchronous functions uniformly. Maps promises, observables, child processes and streams, and callbacks to callback style.

Uint8Array async iterator adapters for Node.js streams

An alternantive to EventEmitter using consumable streams.

Convert push-based streams to pull-based async iterables

A collection of utilities for async iterables. Designed to replace your streams.

StreamQueue pipe the queued streams one by one in order to preserve their content order.

Fast Async Iterator for browser Readable Streams.

Create handshakes for binary protocols with iterable streams

Dependency-free streams utils for Node.js

Pipe ES6 Async Generators through Node.js Streams

Convert push-based streams to pull-based async iterables (fork of queueable)

Mix Async/Sync code with Promises and Streams in a reusable unified line

Reactive streams & subscription primitives for constructing dataflow graphs / pipelines

An async version of through2-map -- async Array.prototype.map for streams

A comprehensive collection of helper methods for WebStreams with built-in backpressure support, inspired by ReactiveExtensions

Handles completion and errors for sync, callbacks, promises, observables and streams.

A map function for Web Streams with concurrency support. Like node's ReadableStream.map(), but for Web Streams.

Parallel transform for web streams. Zero dependencies.

Turn a writable and readable stream into a streams2 duplex stream with support for async initialization and streams1/streams2 input

A tiny, zero-dependency yet spec-compliant asynchronous iterator polyfill/ponyfill for ReadableStreams.

Most.js based middleware for Redux. Handle async actions with monadic streams and reactive programming.

**_Node.js core streams for userland_**

Create Most.js Streams from async iterables

Asynchronously recursive, pure function <3 via lazy streams.

Create async iterators from Arrays, EventEmitters, and Streams

A promise based streaming tokenizer

A collection of streams that work well with promises (through, map, reduce). Think Through2 with promises

Small, parallel and fast test framework with suppport for async/await, promises, callbacks, streams and observables. Targets and works at node.js v0.10 and above.

Convert RxJS Observable streams to async iterators

Map over promises concurrently

A set of utilities that extend the use of JSON

Efficient way of connecting disparate streams

Handle completion and errors with elegance! Support for streams, callbacks, promises, child processes, async/await and sync functions. A drop-in replacement for [async-done][] - pass 100% of its tests plus more

32 bit unsigned host byte order length prefix message streams as async iterators

Settle an async function.

Parallelized transform streams for everyone!

An async iterator that joins multiple other async iterators in order, one after another.

A Promise-based interface into processes created by child_process.spawn

A consumable stream demultiplexer.

Zip/Tar a complete folder or a glob list into a zip/tgz file

Write data to a file, replacing the file if it already exists and creating any intermediate directories if they don't already exist. Thin wrapper around node's native fs methods.

Lightweight and real-time data functional stream programming framework like event-stream, written in ES6 using async await with multi-threading and typescript support

Run multiple promise-returning & async functions with limited concurrency

Get the first fulfilled promise that satisfies the provided testing function

A simple promise wrapper for child_process.spawn that lets you process output streams while waiting for completion

Compose your async functions with elegance.

Higher-order functions and common patterns for asynchronous code

A tiny library designed to parallel or series chain streams, promises or functions with callbacks.

Promisify a callback-style function

Fast, easy and dynamic tokenizer for Node Streams

Fast, in memory work queue

Runtime for Regenerator-compiled generator and async functions.

`Start a promise chain

Run an array of functions in parallel

Utility to "pipe" async iterables together

Allows users to use generators in order to write common functions that can be both sync or async.

JavaScript parser, mangler/compressor and beautifier toolkit for ES6+

A utility to retry failed async methods.

Neo-Async is a drop-in replacement for Async, it almost fully covers its functionality and runs faster

Open Node Streams on demand with async support (original code from https://github.com/jpommerening/node-lazystream)

Simple and modern async event emitter

Full featured Promises/A+ implementation with exceptionally good performance

generator async control flow goodness

An asynchronous yieldable version of JSON.stringify and JSON.parse

Utility method to run function either synchronously or asynchronously using the common `this.async()` style.

Determine if a function is a native async function.

Create a promise that can be canceled

A basic but performant promise implementation

A function that returns the normally hidden `AsyncFunction` constructor

Universal WHATWG Fetch API for Node, Browsers and React Native

Streaming length prefixed buffers with async iterables

Retry a promise-returning or async function

Timeout a promise after a specified amount of time

Explode async and generator functions into a state machine.

FTP client for Node.js, supports FTPS over TLS, IPv6, Async/Await, and Typescript.

SaveStream: Effortlessly save and store streams in your web browser. Optimal memory management for large data, seamless integration, and secure reliability. Upgrade your web apps today and unlock the power of efficient stream saving.

elegant & feature rich browser / node HTTP with a fluent API

delay the evaluation of a paramless async function and cache the result

Contain async insanity so that the dark pony lord doesn't eat souls

nodejs streams using async/await functions

Create a deferred promise

asynchronous function queue with adjustable concurrency

Promise queue with concurrency control

Environment agnostic nextTick polyfill

Async npm module for Node JS that reads the first line of a file

rawStream.pipe(JSONStream.parse()).pipe(streamOfObjects)

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

Check if something is a promise

No-bullshit, ultra-simple, 35-lines-of-code async parallel forEach / map function for JavaScript.

Delay a promise a specified amount of time

Promisify an event by waiting for it to be emitted

Transform async functions to generator functions with speed and simplicity.

asynchronous function queue with adjustable concurrency

Isomorphic, functional type-checking for Javascript

Iterate over promises serially

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).

Filter promises concurrently

Big-friendly JSON. Asynchronous streaming functions for large JSON data sets.

Run some code when the process exits

Memoize/cache function results

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

Distributed task scheduler and rate limiter

A mutex for guarding async workflows

Lock on asynchronous code

Create sync/async APIs with usable logic

Inspect the life of handle objects in node

Map over an array or object of values in parallel or series, passing each through the async iterator, with optional lifecycle hooks.

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

`net.Server#listen()` helper that returns a Promise for async / await

Asynchronous bootstrapping of Node applications

Semaphore using `async` and `await`

Run multiple promise-returning & async functions with limited concurrency using native ES9

Wait for a condition to be true

Native Promise Only: A polyfill for native ES6 Promises **only**, nothing else.

Map over promises serially

Compose promise-returning & async functions into a reusable pipeline

A JavaScript extension package for building strong and modern applications.

Extends Chai with assertions about promises.

Throttle promise-returning & async functions

Async module-loading library and protocol for bundlers/loaders targeting isomorphic apps and Node.js.

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

Watch globs and execute a function upon change, with intelligent defaults for debouncing and queueing.

`AsyncIterator.prototype`, or a shared object to use.

Run some code when the process exits (supports async hooks and pm2 clustering)

validate form asynchronous

Run an array of functions in series

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

Wait for multiple callback

Take care of your `spawn()`

`timers/promises` for client and server.

Memoize promise-returning & async functions

Modular and fast Promises implementation

An optionally-asynchronous forEach with an interesting interface.

Run an array of functions in parallel, but limit the number of tasks executing at the same time

A simple asynchronous tool

Execute an async function per stream data event, pausing the stream when a concurrency limit is saturated

The scrypt password-based key derivation function with sync and cancellable async.

Modern and scalable routing for React applications

A lightweight Promises/A+ and when() implementation, plus other async goodies.

A node- and browser-ready async (now with promises) counterpart of Array.prototype.forEach

Promisified setTimeout

Runs a list of async tasks, passing the results of each into the next one

Convert any object to thenable

Wait for expectation to be true, useful for integration and end to end testing

The JavaScript Task Runner

Async/await wrapper for easy error handling in js

Wait for any promise to be fulfilled

In memory queue system prioritizing tasks

Apply an async function to each Array element in series.

Modern and scalable routing for React applications

Modern and scalable routing for React applications

Wait for a specified number of promises to be fulfilled

Make a promise always fulfill with its actual fulfillment value or rejection reason

Settle promises concurrently and get their fulfillment value or rejection reason

An utility belt for working with streams using async iterators

support for asynchronous development with a Promise based task Scheduler, several different Promise implementations (synchronous, idle, asynchronous and native runtime wrappers), await helpers, and aliases all built and tested using TypeScript.

a runtime interface

Coalesces multiple promises for the same identifier into a single request

Modern and scalable routing for React applications

Modern and scalable routing for React applications

Abortable async function helpers

Map-like, concurrent promise processing for Node.js

Node.js test runner that lets you develop with confidence.

Turns async function into sync via JavaScript wrapper of Node event loop

YouTube IFrame Player API abstraction.

Modern and scalable routing for React applications

The fastest key/value storage for React Native. ~30x faster than AsyncStorage! Works on Android, iOS and Web.

Make array iteration easy when using async/await and Promises

Parser for FTP server responses

Modern and scalable routing for Web applications

A sane FTP client implementation for NodeJS

async.mapLimit's functionality available as a standalone npm module

Oboe.js reads json, giving you the objects as they are found without waiting for the stream to finish

Resolve a path by walking parent directories.

Async/await error handling support for expressjs

Bundle results of async functions calls into one callback with all the results

Test whether a path exists on the filesystem.

Creates a value/error pair to mimic promise behavior

Read the entire contents of a file.

Get the arguments of a function, arrow function, generator function, async function

An implementation of Domain-like error handling, built on async_hooks

Async value container

Modern version of setInterval for promises and async functions available in Node.js and browsers.

Add a callback to the next tick queue.

call your callbacks in a waterfall, at speed

Transform async/await to promise chains

Evaluate asynchronous tasks with configurable concurrency.

Zero-overhead asynchronous parallel/each/map function call

Efficient stream sharing for most.js

Transform streams with async functions, preserving order

Zero-overhead asynchronous series/each/map function calls

Cancelable Async Flows: a wrapper to treat generators as cancelable async functions

Flush promises in tests

Automagically generates command-line interfaces (CLI) for any module. Expected options and help sections are created automatically based on parameters names, with support to async. It can be installed globally, in order to *execute* any module, or .js fil

RxJS based middleware for Redux. Compose and cancel async actions and more.

A plugin for the Acorn parser that understands the ES7 keywords async and await

An event emitter implementation with async support in mind

Loading wrapper and TypeScript types for the PayPal JS SDK

Automated browser testing for the modern web development stack.

Modern and scalable routing for React applications

Make streams thenable

Debounce promise-returning & async functions

horsepower for your modules

A simple and non-blocking PNG encoder / decoder.

Tiny async loader for modern browsers

SQLite client for Node.js applications with SQL-based migrations API written in Typescript

Make bluebird work with the continuation-local-storage module.

Maintained fork of later. Determine later (or previous) occurrences of recurring schedules

Library that can be used to retry functions that return promise

Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)

Asynchronous flow control with a functional taste to it

A module for sequencing and executing tasks and dependencies in maximum concurrency

Mutex locks for async functions

Chainable asynchronous flow control with sequential and parallel primitives and pipeline-style error handling

A lightweight promise library

Fast, reliable cipher, hash and hmac methods executed in Node's threadpool for multi-core throughput.

async parallellimitmethod as module.

The next generation of events handling for javascript! New: abstract away the network!

Caching DNS resolve

Express Error Handler for Async Functions

Simple, consistent sync or async process spawning

ES7 async-await wrapper for the csv package.

Promisify any of: callback function, sync function, generator function, promise-returning function

A tiny version of Golang's WaitGroup with typings, promises, and zero dependencies.

Create a lazy promise that defers execution until it's awaited or when `.then()`, `.catch()`, or `.finally()` is called

Asynchronous Array Utilities (for await)

Parse ePub electronic book files with Node.JS

rawStream.pipe(JSONStream.parse()).pipe(streamOfObjects)

Read or write to a stream using while and await, not event handlers.

seriously like the best async child process library

Parse a function into an object using espree, acorn or babylon parsers. Extensible through Smart Plugins

A lean Promises and Async lib for ES6/ES7

Just like EventEmitter, but with support for callbacks and interuption of the listener-chain

Simply gzip and ungzip in Node.js with promises

Wrapper above react-select that supports pagination on menu scroll

Generic browser priority queue.

Asynchronous iterator function for parallel processing.

Checks whether a command line command exists in the current environment.

Async hook

co with bluebird promises

Test whether all promises passes a testing function

Modern and scalable routing for React applications

Retry a promise-returning or async function

Cooperative multi-tasking for Javascript

Better Queue for NodeJS