React + Redux. Which library or component to choose for localization?

Question

Machine translation from one language to another

Preferably quite popular among the Russian-speaking community.
Translation of constants for the current language.
Router path translation.
Translation of the interface depending on the logic of the translation (if a man is such and such an ending, if such a case, such an ending).
Built-in date and currency translation, etc.

Answer 1

React-intl can partially satisfy your requests
Article from our colleague (in English) - it is worth studying the comments there. And here is the author himself on Habré.
At the moment, I also use react-intl for translation, but from the functionality I use only the translation of constants.