Open-source alternatives to P Series

Bluebird is a JavaScript promise library designed for managing asynchronous operations with a custom promise implementation. It provides a framework for controlling promise lifecycles and orchestrating non-blocking programming patterns. The library distinguishes itself with an asynchronous debugging toolkit that captures long stack traces across asynchronous boundaries and a global handler for unhandled promise rejections. It includes a predicate-based error filtering system to target specific exception types and a mechanism for the deterministic cleanup of system resources. It covers a broa

RxJS is a library for reactive programming that provides a framework for composing asynchronous and event-based programs. It utilizes observable sequences to model data flows, allowing developers to manage complex sequences of events through a declarative programming interface. The library implements the observer pattern to facilitate decoupled communication between data producers and subscribers. By employing a lazy execution model, streams remain dormant until a consumer explicitly subscribes, at which point data production is triggered. This approach enables the construction of predictable

Delay a promise a specified amount of time

Convert an Observable to a Promise

Calls a function repeatedly while a condition returns true and then resolves the promise

Iterate over promises serially

Run promise-returning & async functions repeatedly until you end it

Map over promises concurrently

Map over promises serially

Compose promise-returning & async functions into a reusable pipeline

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

While a condition returns true, calls a function repeatedly, and then resolves the promise

Promisify a callback-style function

Promisify a callback-based function using any-promise.

Promisifies all the selected functions in an object.

co is a JavaScript generator control flow library and non-blocking workflow engine. It manages asynchronous logic by using generators and promises to simulate a synchronous coding style. The project transforms generator functions into standard functions that return promises, ensuring compatibility with non-generator interfaces. It also functions as a promise-based asynchronous orchestrator that executes multiple operations concurrently through the recursive resolution of nested promise collections. The library provides high-level primitives for asynchronous flow control and non-blocking work

Communicating sequential processes for Javascript (like Clojurescript core.async, or Go).

An implementation of Observables for JavaScript. Requires Promises or a Promise polyfill.