awesome-promises

Promise repository

A curated collection of resources and implementations for working with JavaScript Promises

A curated list of useful resources for JavaScript Promises

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last commit: almost 2 years ago
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Awesome Promises / Resources, Blogs, and Books / For beginners
Promise Cookbook 1,615 over 8 years ago The why, what, and how. "A brief introduction [...] primarily aimed at frontend developers"
Promises for Asynchronous Programming Chapter from
You Don't Know JS: Promises 180,122 about 1 year ago Chapter from
JavaScript Promises: an Introduction Basics of JavaScript's native promise implementation
JavaScript with Promises from O'Reilly. Short and to-the-point. Uses native and bluebird
Promise it won't hurt 737 over 4 years ago An interactive workshop
ES6 Kata Promises Promises Katas :
ES6 Promises in Depth
An Incremental Tutorial on Promises An FAQ styled tutorial for beginners

Awesome Promises / Resources, Blogs, and Books / Deep Dive
Promise Fun 4,807 over 1 year ago @sindresorhus's notes, patterns, and solutions to common Promise problems
You're Missing the Point of Promises Promises are much more than callback aggregation, and that jQuery's implementation (prior to 3.0) isn't enough
We have a problem with promises "Many of us are using promises without really understanding them."
Promise anti-patterns 20,448 about 1 year ago Common misuses and how to avoid them
Promise anti-patterns (2) Another set of promises anti-patterns
Promise Ponderings, (Anti-)Patterns, and Apologies Promise behaviour demonstrated and explained by common questions and their answers
Javascript Promises...In Wicked Detail Recreate the promise implementation
Writing Promise-Using Specifications "This document gives guidance on how to write specifications that create, accept, or manipulate promises"
Async functions - making promises friendly

Awesome Promises / Resources, Blogs, and Books / References
Promises/A+ specification
caniuse promises
Fates and States 1,237 over 5 years ago Quick definitions of possible states
Promisees Promise visualization playground for the adventurous

Awesome Promises / Promises/A+ Implementations (ES6/ES2015 compatible) / Strict Implementations
pinkie 138 about 7 years ago Ponyfill. Node-oriented, but . small implementation
native-promise-only 717 about 6 years ago Polyfill. Browser and node-compatible
es6-promise 7,290 almost 3 years ago Opt-in polyfill. A strict-spec subset of rsvp.js
lie 743 about 5 years ago Small, browserifyable with an opt-in polyfill

Awesome Promises / Promises/A+ Implementations (ES6/ES2015 compatible) / Implementations with extras
bluebird 20,448 about 1 year ago Fully featured, extremely performant. Long stack traces & generator/coroutine support
creed 274 over 7 years ago Hyper performant & full featured like Bluebird, but FP-oriented. Coroutines, generators, promises, ES2015 iterables, & fantasy-land spec
rsvp.js 3,608 about 2 years ago Lightweight with a few extras. Compatible down to IE6!
Q 14,926 about 2 years ago One of the original implementations. Long stack traces and other goodies
then/promise 2,584 about 2 years ago Small with , and additions
when.js 3,439 over 3 years ago Packed with control flow, functional, and utility methods

Awesome Promises / Promises/A+ Implementations (ES6/ES2015 compatible) / Fallbacks
native-or-bluebird Helps transition to completely native
pinkie-promise 117 over 7 years ago Use native, or fall back to . Great for node library authors
any-promise 180 about 7 years ago Loads the first available implementation. Safe for browserify

Awesome Promises / Convenience Utilities / sindresorhus's many Promise utilities (see notes)
delay 609 over 2 years ago Delay a promise a specified amount of time
pify 1,505 about 3 years ago Promisify ("denodify") a callback-style function
loud-rejection 281 almost 5 years ago Make unhandled promise rejections fail loudly instead of the default silent fail
hard-rejection 107 over 3 years ago Make unhandled promise rejections fail hard right away instead of the default silent fail
p-queue 3,506 about 1 year ago Promise queue with concurrency control
p-break 22 over 4 years ago Break out of a promise chain
p-lazy 269 about 1 year ago Create a lazy promise that defers execution until or is called
p-defer 77 over 1 year ago Create a deferred promise
p-if 60 over 4 years ago Conditional promise chains
p-tap 132 over 4 years ago Tap into a promise chain without affecting its value or state
p-map 1,376 11 months ago Map over promises concurrently
p-all 319 over 2 years ago Run promise-returning & async functions concurrently with optional limited concurrency
p-limit 2,083 about 1 year ago Run multiple promise-returning & async functions with limited concurrency
p-times 39 about 4 years ago Run promise-returning & async functions a specific number of times concurrently
p-catch-if 38 over 4 years ago Conditional promise catch handler
p-time 70 about 2 years ago Measure the time a promise takes to resolve
p-log 26 over 4 years ago Log the value/error of a promise
p-filter 75 almost 2 years ago Filter promises concurrently
p-settle 90 about 2 years ago Settle promises concurrently and get their fulfillment value or rejection reason
p-memoize 397 over 2 years ago Memoize promise-returning & async functions
p-whilst 54 about 1 year ago Calls a function repeatedly while a condition returns true and then resolves the promise
p-throttle 447 12 months ago Throttle promise-returning & async functions
p-debounce 211 over 1 year ago Debounce promise-returning & async functions
p-retry 808 12 months ago Retry a promise-returning or async function
p-wait-for 155 over 2 years ago Wait for a condition to be true
p-timeout 275 about 1 year ago Timeout a promise after a specified amount of time
p-race 46 almost 3 years ago A better
p-try 58 about 4 years ago ponyfill - Starts a promise chain
p-finally 45 over 4 years ago ponyfill - Invoked when the promise is settled regardless of outcome
p-any 55 over 3 years ago Wait for any promise to be fulfilled
p-some 36 about 2 years ago Wait for a specified number of promises to be fulfilled
p-pipe 122 over 4 years ago Compose promise-returning & async functions into a reusable pipeline
p-each-series 50 over 3 years ago Iterate over promises serially
p-map-series 48 over 4 years ago Map over promises serially
p-reduce 68 almost 3 years ago Reduce a list of values using promises into a promise for a value
p-props 194 about 2 years ago Like but for and

Awesome Promises / Convenience Utilities / Others
promise-method 2 almost 2 years ago Standalone . Turn a synchronously-returning method into a promise-returning one
is-promise 281 over 2 years ago Determine if something looks like a Promise
sprom 14 almost 8 years ago Resolve when a stream ends. Optional buffering (be careful with this!)
task.js 1,630 over 6 years ago Write async functions in a blocking style using promises and generators. Like
co 11,895 almost 5 years ago Like and , but supports thunks too
lie-fs Promise wrappers for Node's FS API
promise-do-until 1 about 7 years ago Calls a function repeatedly until a condition returns true and then resolves the promise
promise-do-whilst 3 about 7 years ago Calls a function repeatedly while a condition returns true and then resolves the promise
promise-semaphore 29 about 9 years ago Push a set of work to be done in a configurable serial fashion
promise-nodeify 2 12 months ago Standalone method which calls a Node-style callback on resolution or rejection

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