Sep 4, 2018 · 1 min read
Opal (https://github.com/opal/opal) ships with an implementation of Promise that runs in the browser or Node.js that is probably worth adding to the article.
- The implementation: https://github.com/opal/opal/blob/master/stdlib/promise.rb
- A mini introduction from 2014: http://opalrb.com/blog/2014/05/07/promises-in-opal/
