I think you could use something like https://github.com/JMPerez/promise-throttle to limit how many requests per second are made. You have an example of how this is done on https://github.com/JMPerez/spotify-dedup/blob/master/app/scripts/main.js

If you like the idea I can work on a Pull Request to add this.