Recently, a developer named Ravikishan shared a detailed guide on building custom JavaScript Promises from scratch. The project, called XPromise, aims to provide a deeper understanding of the internal workings of Promises in JavaScript. This open-source implementation can be found on GitHub and is designed to help developers explore how asynchronous programming is managed in JavaScript.

Source: https://dev.to/ravikishan/building-xpromise-a-deep-dive-into-custom-javascript-promises-3d17