JSPM

Run multiple promise-returning & async functions with limited concurrency

Get the first fulfilled promise that satisfies the provided testing function

Promisify a callback-style function

Higher-order functions and common patterns for asynchronous code

Minimal async jobs utility library, with streams support

Runtime for Regenerator-compiled generator and async functions.

Map over promises concurrently

Fast, in memory work queue

`Start a promise chain

Run an array of functions in parallel

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

Simple and modern async event emitter

Determine if a function is a native async function.

Full featured Promises/A+ implementation with exceptionally good performance

generator async control flow goodness

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

A function that returns the normally hidden `AsyncFunction` constructor

A basic but performant promise implementation

Create a promise that can be canceled

Universal WHATWG Fetch API for Node, Browsers and React Native

A set of utilities that extend the use of JSON

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

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.

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

Promise queue with concurrency control

A promise based streaming tokenizer

asynchronous function queue with adjustable concurrency

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

Create a deferred promise

Gracefully handle a Promise using async/await.

Environment agnostic nextTick polyfill

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

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

Check if something is a promise

Delay a promise a specified amount of time

asynchronous function queue with adjustable concurrency

Promisify an event by waiting for it to be emitted

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

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.

Isomorphic, functional type-checking for Javascript

Iterate over promises serially

Filter promises concurrently

Run some code when the process exits

Create sync/async APIs with usable logic

Distributed task scheduler and rate limiter

Memoize/cache function results

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

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

Lock on asynchronous code

A mutex for guarding async workflows

Inspect the life of handle objects in node

Asynchronous bootstrapping of Node applications

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

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

Semaphore using `async` and `await`

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

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

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

Throttle promise-returning & async functions

Compose promise-returning & async functions into a reusable pipeline

Extends Chai with assertions about promises.

Settle an async function.

Map over promises serially

Compose your async functions with elegance.

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

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

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

Wait for a condition to be true

Run an array of functions in series

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

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

Gracefully handle a Promise using async/await.

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

Take care of your `spawn()`

Wait for multiple callback

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

`timers/promises` for client and server.

validate form asynchronous

Modern and scalable routing for React applications

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

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

Memoize promise-returning & async functions

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

A simple asynchronous tool

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

Promisified setTimeout

An optionally-asynchronous forEach with an interesting interface.

Modular and fast Promises implementation

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

Modern and scalable routing for React applications

Async/await wrapper for easy error handling in js

Modern and scalable routing for React applications

A function that returns the normally hidden `AsyncGeneratorFunction` constructor

Modern and scalable routing for React applications

The JavaScript Task Runner

Modern and scalable routing for React applications

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

In memory queue system prioritizing tasks

Convert any object to thenable

Abortable async function helpers

Wait for a specified number of promises to be fulfilled

Wait for any promise to be fulfilled

Modern and scalable routing for Web applications

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

Apply an async function to each Array element in series.

Settle promises concurrently and get their fulfillment value or rejection reason with optional limited concurrency

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.

Modern and scalable routing for React applications

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

Coalesces multiple promises for the same identifier into a single request

YouTube IFrame Player API abstraction.

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

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

Abstract streams to deal with the whole buffered contents.

A sane FTP client implementation for NodeJS

Map-like, concurrent promise processing for Node.js

Parser for FTP server responses

Make array iteration easy when using async/await and Promises

Test whether a path exists on the filesystem.

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

Resolve a path by walking parent directories.

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

Read the entire contents of a file.

Zero-overhead asynchronous parallel/each/map function call

Async value container

call your callbacks in a waterfall, at speed

Async/await error handling support for expressjs

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

Transform async/await to promise chains

Creates a value/error pair to mimic promise behavior

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

Add a callback to the next tick queue.

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

An event emitter implementation with async support in mind

Evaluate asynchronous tasks with configurable concurrency.

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

Flush promises in tests

Modern and scalable routing for React applications

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

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

Zero-overhead asynchronous series/each/map function calls

Debounce promise-returning & async functions

horsepower for your modules

Loading wrapper and TypeScript types for the PayPal JS SDK

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

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

Library that can be used to retry functions that return promise

Mutex locks for async functions

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

Tiny async loader for modern browsers

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

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

Asynchronous flow control with a functional taste to it

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

A simple and non-blocking PNG encoder / decoder.

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

A lightweight promise library

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

Automated browser testing for the modern web development stack.

seriously like the best async child process library

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

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

Express Error Handler for Async Functions

Asynchronous Array Utilities (for await)

ES7 async-await wrapper for the csv package.

Nexus TypeScript SDK

Parse ePub electronic book files with Node.JS

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

Better Queue for NodeJS

Caching DNS resolve

A lean Promises and Async lib for ES6/ES7

Simple, consistent sync or async process spawning

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

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

Simply gzip and ungzip in Node.js with promises

Asynchronous iterator function for parallel processing.

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

Wrapper above react-select that supports pagination on menu scroll

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

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

Async hook

Generic browser priority queue.

Async middleware for JavaScript and TypeScript

Modern and scalable routing for React applications

Mutex locks for async functions with functionality to use keys for separate locks

Modern and scalable routing for React applications

Run an array of functions in series, each passing its results to the next function (waterfall)

Convert event emitters and event targets to ES async iterators

Modern and scalable routing for React applications

Modern and scalable routing for React applications

co with bluebird promises

Modern and scalable routing for React applications

DOM Promise and Promises/A+ implementation for Node.js and browsers

Simple asynchronous middleware pattern

Cooperative multi-tasking for Javascript

async parallellimitmethod as module.

zip and unzip library for node

Modern and scalable routing for React applications

Modern and scalable routing for React applications

Higher order functions for iterators and async iterators

Convert Node.js streams to streaming iterables

Test whether all promises passes a testing function

A lightweight Deferred implementation, on top of Promises/A+

Modern and scalable routing for React applications

Modern and scalable routing for React applications

Waits until the given predicate function returns a truthy value, then resolves

Ambi lets you execute any function ambidextrously; providing you the ability to execute any function (be it synchronous, asynchronous, returns, callbacks, promises) as if it returned a promise.

Modern and scalable routing for React applications

Modern and scalable routing for React applications

Enables simple, yet robust handling of async action creators in Redux

Runs Promises in a pool that limits their concurrency.

Pipe functions in a Unix-like style. It supports Promises (async) anywhere in the pipeline and every step will be executed sequentially. The return (resolve in case of Promises) of each function will be passed in as an argument to the next one

Compatible version of p-queue

Asynchronous String.prototype.replace()

generator async control flow goodness

Modern and scalable routing for React applications

A readable async stream which can be iterated over using a for-await-of loop.

Async array reduce. Asynchronously applies a function against an accumulator and each element in an array (from left to right, in series) to reduce it to a single value.

With Bruno CLI, you can now run your API collections with ease using simple command line commands.

CLI Simple, Stupid. Automatic discovery of parameters names. Provides an easy and minimal setup by passing in only a function reference without the need of declaring all expected options names or create a help section by hand. Support to sync / async. Sup

Async loader for google maps api (browser, typescript)

Retry a promise-returning or async function

Compatible version of p-timeout

async conditional execution for async.js or standalone usage

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

The iterable toolbox

Asynchronous IO (for Azure Open Source Projects)

Create a transform stream using await instead of callbacks

multiple hash functions

Tiny, dependency free promisify library.

Utility to "pipe" async iterables together

Group together synchronous and asynchronous tasks and execute them with support for concurrency, naming, and nesting.

Detects missing await on async function calls

FantasyLand compliant (monadic) alternative to Promises

LazyLoad is a lightweight (2.4 kB) and flexible script that speeds up your web application by deferring the loading of your below-the-fold images, videos and iframes to when they will enter the viewport. It's written in plain "vanilla" JavaScript, it leve

A module for batching individual promises to improve their collective efficiency.

A little retry tool to execute a function until the function is successful. Can also bind a timeout to a function. This lib is usable in typescript, in javascript, in node, in SPA tools (rest, Vue, Svelte...) and browser (available in ESM and common js fo

OpenAPI common code for Azure Tools.

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

A module for managing ES6 promise concurrency, frequency, and efficiency.

AES crypto native module for react-native

Enhances html-webpack-plugin functionality with async and defer attributes for script elements