The great thing about Promises/A+ is that it's so small. I have implemented it in 375 bytes, and was even able to add two convenience functions: https://github.

The great thing about Promises/A+ is that it's so small. I have implemented it in 375 bytes, and was even able to add two convenience functions: https://github.com/timjansen/PinkySwear.js https://github.com/timjansen/PinkySwear.js