Implementation for ru react-intl, REACT?

Question

React

Good afternoon. I study the documentation https://github.com/yahoo/react-intl
And I'm interested in the section related to FormattedMessage

Pluralization rules: In some languages ​​you have more than one and other. For example in ru there are the following plural rules: one, few, many and other. Check out the official Unicode CLDR documentation.

I don't understand the implementation for ru or even for ru/eng a bit, maybe someone has already done it or can demonstrate it in the sandbox?