JSPM

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

Load a script asynchronously

load a script, but only once

Brings back <script> to your favorite Single Page App!

Simple function for loading script tags in the browser asynchronously

Asyncly load a script

VueScriptX brings back the <script> tag to your Vue projects!

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

functional pipelines for Java Script

React Script Tag 18, updated a five year old package that had a very well written script loader tag utility for react, updating to now use TypeScript and React 18

A higher-order React component that assists in the asynchronous loading of third party JS libraries (eg. Stripe.js)

Loads scripts cleanly and asynchronously in SPAs

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

Pace.js load progress bar for Ember apps, incl. Flash-like initial script lazy loading

Loading wrapper and TypeScript types for the PayPal JS SDK

Javascript build tools based on coffee-script & cake

Tiny async loader for modern browsers

Plugin to add various attributes to script tags injected by html-webpack-plugin

Utility to "pipe" async iterables together

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

Get the first fulfilled promise that satisfies the provided testing function

Run multiple promise-returning & async functions with limited concurrency

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

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

Higher-order functions and common patterns for asynchronous code

Promisify a callback-style function

Fast, in memory work queue

Async loader for google maps api (browser, typescript)

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

Minimal async jobs utility library, with streams support

`Start a promise chain

Runtime for Regenerator-compiled generator and async functions.

Run an array of functions in parallel

Map over promises concurrently

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

Simple async iterables for websocket client connections

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

A utility to retry failed async methods.

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

Simple and modern async event emitter

generator async control flow goodness

Full featured Promises/A+ implementation with exceptionally good performance

Determine if a function is a native async function.

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

Create a promise that can be canceled

A function that returns the normally hidden `AsyncFunction` constructor

Universal WHATWG Fetch API for Node, Browsers and React Native

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

A basic but performant promise implementation

A set of utilities that extend the use of JSON

Retry a promise-returning or async function

Timeout a promise after a specified amount of time

Async/await error handling support for expressjs

Explode async and generator functions into a state machine.

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

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

FantasyLand compliant (monadic) alternative to Promises

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

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

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

asynchronous function queue with adjustable concurrency

A promise based streaming tokenizer

Promise queue with concurrency control

Create a deferred promise

Environment agnostic nextTick polyfill

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

Check if something is a promise

Promisify an event by waiting for it to be emitted

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

Asynchronous flow control with a functional taste to it

A lightweight TypeScript/JavaScript adapter for working with Flatfile's Portal

Delay a promise a specified amount of time

asynchronous function queue with adjustable concurrency

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

Iterate over promises serially

Isomorphic, functional type-checking for Javascript

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

Create handshakes for binary protocols with iterable streams

Filter promises concurrently

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

A tiny script to run async functions aka promises one after the other

Run some code when the process exits

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

Memoize/cache function results

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.

Distributed task scheduler and rate limiter

A mutex for guarding async workflows

Lock on asynchronous code

Create sync/async APIs with usable logic

$(document).ready() for the 21st century

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.

Asynchronous bootstrapping of Node applications

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

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

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

Semaphore using `async` and `await`

Map over promises serially

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

Wait for a condition to be true

Settle an async function.

Compose promise-returning & async functions into a reusable pipeline

An easy way to run reliable polling without messing with setTimeout.

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.

A browser library for handling asynchronously loading and interacting with external script dependencies with promises. Written in TypeScript.

Extends Chai with assertions about promises.

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

validate form asynchronous

Compose your async functions with elegance.

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

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

Wait for multiple callback

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

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

A JavaScript extension package for building strong and modern applications.

`timers/promises` for client and server.

Run an array of functions in series

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

Take care of your `spawn()`

An optionally-asynchronous forEach with an interesting interface.

Modular and fast Promises implementation

Memoize promise-returning & async functions

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

Async file and script loader that works both in the browser and in nodejs / io.js.

Create the powerful singleton easily

A simple asynchronous tool

Convert any object to thenable

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

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

Modern and scalable routing for React applications

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

Promisified setTimeout

The JavaScript Task Runner

A Node.js queue library with controllable concurrency and rate limiting

Wait for any promise to be fulfilled

In memory queue system prioritizing tasks

Modern and scalable routing for React applications

Async/await wrapper for easy error handling in js

Apply an async function to each Array element in series.

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

Translate text to different languages on node.js and the browser

Modern and scalable routing for React applications

Coalesces multiple promises for the same identifier into a single request

Settle promises concurrently and get their fulfillment value or rejection reason

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.

Wait for a specified number of promises to be fulfilled

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

Map-like, concurrent promise processing for Node.js

Creates a queue of sync or async functions with resolve and reject callback.

Modern and scalable routing for React applications

Run a script that exports an `async` function

Modern and scalable routing for React applications

Abortable async function helpers

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

Modern and scalable routing for React applications

YouTube IFrame Player API abstraction.

Parser for FTP server responses

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

Make array iteration easy when using async/await and Promises

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

Abstract streams to deal with the whole buffered contents.

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

A sane FTP client implementation for NodeJS

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

Modern and scalable routing for Web applications

Creates a value/error pair to mimic promise behavior

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.

Test whether a path exists on the filesystem.

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

Zero-overhead asynchronous parallel/each/map function call

Add a callback to the next tick queue.

Read the entire contents of a file.

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

Async value container

Zero-overhead asynchronous series/each/map function calls

Evaluate asynchronous tasks with configurable concurrency.

call your callbacks in a waterfall, at speed

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

Lightweight promise/generator machinery.

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

An event emitter implementation with async support in mind

Transform async/await to promise chains

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

Automated browser testing for the modern web development stack.

Library that can be used to retry functions that return promise

Modern and scalable routing for React applications

Debounce promise-returning & async functions

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

A simple and non-blocking PNG encoder / decoder.

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

horsepower for your modules

Mutex locks for async functions

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

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

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

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

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

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

ES7 async-await wrapper for the csv package.

Programmatically Loads remote scripts via script tag

Dynamic scripts loading for modern browsers.

A lightweight promise library

Caching DNS resolve

Express Error Handler for Async Functions

seriously like the best async child process library

jsonp minimal client for the browser (1.4K) and Node.js

Simple, consistent sync or async process spawning

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

async parallellimitmethod as module.

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

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

Wrapper above react-select that supports pagination on menu scroll

Generic browser priority queue.

Parse ePub electronic book files with Node.JS

Simply gzip and ungzip in Node.js with promises

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

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

Asynchronous Array Utilities (for await)

A lean Promises and Async lib for ES6/ES7

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

Async hook

ES6 Promise polyfill

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

Asynchronous iterator function for parallel processing.

Async middleware for JavaScript and TypeScript

A Svelte action that monitors an element enters or leaves the viewport or a parent element. Performant and efficient thanks to using Intersection Observer under the hood.

co with bluebird promises

Retry a promise-returning or async function

zip and unzip library for node

Modern and scalable routing for React applications

Test whether all promises passes a testing function

Convert event emitters and event targets to ES async iterators

Better Queue for NodeJS

Cooperative multi-tasking for Javascript

Modern and scalable routing for React applications

Convert Node.js streams to streaming iterables

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

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.

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

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

Modern and scalable routing for React applications

Modern and scalable routing for React applications

Asynchronous String.prototype.replace()