ottoext
Originally based on github.com/deoxxa/ottoext

Overview
This package contains some extensions for the otto JavaScript interpreter. The
most important extension is a generic event loop based on code from natto. The
other extensions are setTimeout and setInterval support, Promise support
(via native-promise-only, MIT license), and fetch support.
Examples
Take a look at the test files to see how the extensions work.
License
3-clause BSD. A copy is included with the source.