JavaScript-like Promise for C++20 with ES6 async/await semantics. Supports move (e.g. so you can wrap ASIO and avoid callback hell).

Capstone Project #1 of Codecademy's Full Stack Engineer Career Path

A from-scratch implementation of a JavaScript Promise-like class designed to understand how promises work internally — including state transitions, chaining, microtask scheduling, and static utility methods.

JS - Event Loop, Callback, Callback Hell, Inversion of Control, Promises, Promise Chaining