Promises and async control flow

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• p-limitRun multiple promise-returning & async functions with limited concurrency
• p-locateGet the first fulfilled promise that satisfies the provided testing function
• node-fetchImplementation of the Fetch API for Node.js, built on Node's http module.
• universalifyMake a callback- or promise-based function support both promises and callbacks.
• gensyncAllows users to use generators in order to write common functions that can be both sync or async.
• pifyPromisify a callback-style function
• run-parallelRun an array of functions in parallel
• asynckitMinimal async jobs utility library, with streams support
• @humanwhocodes/retryA utility to retry failed async methods.
• axiosPromise-based HTTP client for the browser and Node.js.
• p-try`Start a promise chain
• asyncHigher-order functions and common patterns for asynchronous code
• p-mapMap over promises concurrently
• is-async-functionDetermine if a function is a native async function.
• regenerator-runtimeRuntime for Regenerator-compiled generator and async functions.
• async-functionA function that returns the normally hidden `AsyncFunction` constructor
• neo-asyncNeo-Async is a drop-in replacement for Async, it almost fully covers its functionality and runs faster
• bluebirdFull featured Promises/A+ implementation with exceptionally good performance
• any-promiseResolve any installed ES6 compatible promise
• p-retryRetry a promise-returning or async function
• synckitPerform async work synchronously in Node.js using `worker_threads` with first-class TypeScript support.
• lieA basic but performant promise implementation
• lodash.debounceThe lodash method `_.debounce` exported as a module.
• p-timeoutTimeout a promise after a specified amount of time
• emitterySimple and modern async event emitter
• cogenerator async control flow goodness
• run-asyncUtility method to run function either synchronously or asynchronously using the common `this.async()` style.
• p-finally`Promise#finally()` ponyfill - Invoked when the promise is settled regardless of outcome
• duplexifyTurn a writable and readable stream into a streams2 duplex stream with support for async initialization and streams1/streams2 input
• promiseBare bones Promises/A+ implementation
• p-cancelableCreate a promise that can be canceled
• p-queuePromise queue with concurrency control
• @open-draft/deferred-promiseA Promise-compatible abstraction that defers resolving/rejecting promises to another closure.
• @sec-ant/readable-streamA tiny, zero-dependency yet spec-compliant asynchronous iterator polyfill/ponyfill for ReadableStreams.
• promise-retryRetries a function that returns a promise, leveraging the power of the retry module.
• form-data-encoderEncode FormData content into the multipart/form-data format
• basic-ftpFTP client for Node.js, supports FTPS over TLS, IPv6, Async/Await, and Typescript.
• debounceDelay function calls until a set time elapses after the last invocation
• standard-as-callbackA performant and standard (Bluebird) library that registers a node-style callback on a promise
• @discoveryjs/json-extA set of efficient utilities that extend the use of JSON (streaming, estimate size, NDJSON/JSONL, etc.)
• throatThrottle the parallelism of an asynchronous (promise returning) function / functions
• dezalgoContain async insanity so that the dark pony lord doesn't eat souls
• concurrentlyRun commands concurrently
• @open-draft/untilGracefully handle a Promise using async/await.
• thunkydelay the evaluation of a paramless async function and cache the result
• quansyncCreate sync/async APIs with usable logic
• lodash.throttleThe lodash method `_.throttle` exported as a module.
• es6-promiseA lightweight library that provides tools for organizing asynchronous code
• queueasynchronous function queue with adjustable concurrency
• qA library for promises (CommonJS/Promises/A,B,D)

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