Promises and async control flow

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• modern-asyncA modern tooling library for asynchronous operations using async/await, promises and async generators
• promise-to-callbackConvert promise to callback interface
• tinyspawnMinimal promise wrapper around child_process.spawn for running binaries and shell commands.
• seventhA lean Promises and Async lib for ES6/ES7
• @jsdevtools/ez-spawnSimple, consistent sync or async process spawning
• async-csvES7 async-await wrapper for the csv package.
• kuromojinProvide a high level wrapper for kuromoji.js
• acorn-es7-pluginA plugin for the Acorn parser that understands the ES7 keywords async and await
• run-waterfallRun an array of functions in series, each passing its results to the next function (waterfall)
• promisify-callPromisify a function call so users can call a function with a callback or get a promise
• it-length-prefixedStreaming length prefixed buffers with async iterables
• string-replace-asyncAsynchronous String.prototype.replace()
• p-lazyCreate a lazy promise that defers execution until it's awaited or when `.then()`, `.catch()`, or `.finally()` is called
• glob-gitignoreExtends `glob` with support for filtering files according to gitignore rules and exposes an optional Promise API with NO performance issues
• seqChainable asynchronous flow control with sequential and parallel primitives and pipeline-style error handling
• alreadyPromise extensions; map, filter, etc
• clean-css-promiseclean-css with the default Promise interface and some improvements
• promise-batcherA module for batching individual promises to improve their collective efficiency.
• node-worker-threads-poolSimple worker threads pool using Node's worker_threads module. Compatible with ES6+ Promise, Async/Await.
• vowDOM Promise and Promises/A+ implementation for Node.js and browsers
• promise-pool-executorA module for managing ES6 promise concurrency, frequency, and efficiency.
• it-readerRead an exact number of bytes from a binary (async) iterable
• @octetstream/promisifyTiny, dependency free promisify library.
• rxjs-marblesAn RxJS marble testing library for any test framework
• post-robotSimple postMessage based server.
• promise-fsWraps FS methods using Promise
• it-pipeUtility to "pipe" async iterables together
• async-scheduler 
• promise-shareCreates a getter function for a promise result
• redux-promise-middlewareEnables simple, yet robust handling of async action creators in Redux
• @ngxs/devtools-pluginredux devtools plugin for @ngxs/store
• limited-request-queueInteractively manage concurrency for outbound requests.
• compositionCompose generator and async/await middleware
• unxhrSynchronous and asynchronous XMLHttpRequest for Node
• fs-readfile-promisePromise version of fs.readFile
• if-asyncasync conditional execution for async.js or standalone usage
• promise-ftpa promise-based ftp client for node.js
• eslint-plugin-rxjs-xModern ESLint plugin for RxJS
• grunt-concurrentRun grunt tasks concurrently
• multihashing-asyncmultiple hash functions
• subscribe-ui-eventA single, throttle built-in solution to subscribe to browser UI Events.
• @henrygd/queueTiny async queue with concurrency control. Like p-limit or fastq, but smaller and faster.
• better-allBetter Promise.all with automatic dependency optimization
• observable-to-promiseConvert an Observable to a Promise
• when-dom-ready$(document).ready() for the 21st century
• @nestjs-cls/transactional-adapter-prismaA Prisma adapter for @nestjs-cls/transactional
• stream-to-stringPipe a stream into a string, collect value with callback or promise
• fibersCooperative multi-tasking for Javascript
• stopcockLimit the execution rate of a function using the token bucket algorithm
• async-array-reduceAsync 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.

• node-fetch vs axios
• async vs neo-async
• emittery vs basic-ftp