JSPM

A dependable promises and async utility belt

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

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

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

A promise based streaming tokenizer

asynchronous function queue with adjustable concurrency

Create a deferred promise

Promise queue with concurrency control

Environment agnostic nextTick polyfill

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

Promisify an event by waiting for it to be emitted

Delay a promise a specified amount of time

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

asynchronous function queue with adjustable concurrency

Isomorphic, functional type-checking for Javascript

Iterate over promises serially

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.

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

Run some code when the process exits

Filter promises concurrently

Memoize/cache function results

Distributed task scheduler and rate limiter

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

Lock on asynchronous code

A mutex for guarding async workflows

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.

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

Asynchronous bootstrapping of Node applications

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

Semaphore using `async` and `await`

0-Deps, simple and fast async generator library for browser and NodeJS

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

Wait for a condition to be true

Settle an async function.

Map over promises serially

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

Compose promise-returning & async functions into a reusable pipeline

Extends Chai with assertions about promises.

Throttle promise-returning & async functions

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

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

Compose your async functions with elegance.

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

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

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

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

Run an array of functions in series

validate form asynchronous

Take care of your `spawn()`

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

Wait for multiple callback

`timers/promises` for client and server.

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

Modular and fast Promises implementation

Memoize promise-returning & async functions

An optionally-asynchronous forEach with an interesting interface.

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

Modern and scalable routing for React applications

A simple asynchronous tool

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

Promisified setTimeout

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

Convert any object to thenable

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

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

In memory queue system prioritizing tasks

Wait for any promise to be fulfilled

Modern and scalable routing for React applications

Apply an async function to each Array element in series.

Modern and scalable routing for React applications

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

Settle promises concurrently and get their fulfillment value or rejection reason

Wait for a specified number of promises to be fulfilled

Coalesces multiple promises for the same identifier into a single request

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

Modern and scalable routing for React applications

Stream and serialize nested promises and async iterables over HTTP, workers, etc

Abortable async function helpers

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

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

Map-like, concurrent promise processing for Node.js

YouTube IFrame Player API abstraction.

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

Modern and scalable routing for React applications

Parser for FTP server responses

Abstract streams to deal with the whole buffered contents.

Modern and scalable routing for Web applications

Make array iteration easy when using async/await and Promises

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

A sane FTP client implementation for NodeJS

Resolve a path by walking parent directories.

Test whether a path exists on the filesystem.

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

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

Creates a value/error pair to mimic promise behavior

Read the entire contents of a file.

Async/await error handling support for expressjs

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

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

Async value container

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

Transform async/await to promise chains

Add a callback to the next tick queue.

call your callbacks in a waterfall, at speed

Zero-overhead asynchronous parallel/each/map function call

Evaluate asynchronous tasks with configurable concurrency.

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

Flush promises in tests

Zero-overhead asynchronous series/each/map function calls

Abort promises and async iterables

An event emitter implementation with async support in mind

Lightweight, reactive, VDOM-less UI/DOM components with async lifecycle and @thi.ng/hiccup compatible

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

Modern and scalable routing for React applications

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

horsepower for your modules

Automated browser testing for the modern web development stack.

Functional async flow control library

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

Debounce promise-returning & async functions

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

Library that can be used to retry functions that return promise

Asynchronous flow control with a functional taste to it

A simple and non-blocking PNG encoder / decoder.

Tiny async loader for modern browsers

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

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

Mutex locks for async functions

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

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

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

async parallellimitmethod as module.

A lightweight promise library

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

Caching DNS resolve

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

ES7 async-await wrapper for the csv package.

Express Error Handler for Async Functions

Simple, consistent sync or async process spawning

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

Asynchronous Array Utilities (for await)

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

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

seriously like the best async child process library

Parse ePub electronic book files with Node.JS

Generic browser priority queue.

A lean Promises and Async lib for ES6/ES7

Simply gzip and ungzip in Node.js with promises

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

Wrapper above react-select that supports pagination on menu scroll

Asynchronous iterator function for parallel processing.

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

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

co with bluebird promises

Async hook

Modern and scalable routing for React applications

Test whether all promises passes a testing function

Better Queue for NodeJS

Retry a promise-returning or async function

Convert event emitters and event targets to ES async iterators

Async middleware for JavaScript and TypeScript

Cooperative multi-tasking for Javascript

zip and unzip library for node

Simple asynchronous middleware pattern

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

Asynchronous String.prototype.replace()

Modern and scalable routing for React applications

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

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.

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

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

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

Modern and scalable routing for React applications

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.

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

Higher order functions for iterators and async iterators

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

generator async control flow goodness

Modern and scalable routing for React applications

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

Asynchronous IO (for Azure Open Source Projects)

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

async conditional execution for async.js or standalone usage

Modern and scalable routing for React applications

Tiny, dependency free promisify library.

Async loader for google maps api (browser, typescript)

Runs Promises in a pool that limits their concurrency.

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

Modern and scalable routing for React applications

Modern and scalable routing for React applications

multiple hash functions

OpenAPI common code for Azure Tools.

Modern and scalable routing for React applications

Modern and scalable routing for React applications

Detects missing await on async function calls

Create a transform stream using await instead of callbacks

Modern and scalable routing for React applications

Modern and scalable routing for React applications

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

Modern and scalable routing for React applications

Modern and scalable routing for applications

Modern and scalable routing for React applications

A parallel, asynchronous implementation of forEach in ES6 with a configurable maximum degree of parallelism.

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

React hooks for RxJS Observables. Simple, flexible, testable and performant.

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

Common URI handling code.

Modern and scalable routing for React applications

Make an asynchronous function synchronous

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

Create a duplex stream from a readable and a writable stream.

Run promise-returning & async functions in series

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

Timeout a promise after a specified amount of time. This is a fork of sindresorhus/p-timeout, but with CommonJS support.

FantasyLand compliant (monadic) alternative to Promises

Amazon S3 client for upload/download files

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

Light-weight Fetch implementation transparently supporting both HTTP/1(.1) and HTTP/2

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

function try-catch wrapper for promises

Promise wrapper over MQTT.js

Asynchronous side effects, without the nonsense

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

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

A simple implementation of async.parallel

Helper for memoizing async functions and methods

Promise queue with concurrency control. This is a fork of sindresorhus/p-queue, but with CommonJS support.

jQuery style Deferreds

An alternantive to EventEmitter using consumable streams.

async queuemethod as module.

SAX based evented streaming JSON parser in JavaScript (browser and node)

Next-generation ZeroMQ bindings for Node.js

Async/await wrapper with error handling, retry and error override

Convert a Cypress chain into a promise for use with async/await

Compose generator and async/await middleware

Like `Promise.all()` but for `Map` and `Object`

Modern and scalable routing for React applications

Basic wrapper for await that allows handling of errors without try/catch blocks

A bluebird wrapper for node-mysql

The lightweight, dependency-free, dark-theme aware table component for your Mantine UI data-rich applications, featuring asynchronous data loading support, pagination, intuitive Gmail-style additive batch rows selection, column sorting, custom cell data r