redux-react-i18n | An i18n solution for React/Redux and React Native projects | Internationalization library

I am in the middle of (large)app rewrite into Reactjs-redux and internalization is next problem.

Ive been looking at some currently available libraries (redux-react-i18n , 18n-react) but none of them seems to fit.

Why ? Because my localized strings are stored in separate .properties files and this cannot be changed. But there is a possibility generate whatever format from this in compile time

Example en_US.properties:

• key1=This is a constant string
• key2=This is a string with {parameter}
• ....

and similar with de_de.properties file and so on

Also language can be change only on page refresh so this is making it little bit easier

My question is how to approach this problem. My first naive approach is generate some static constant js object available in app globaly but im feeling thats against javascript best practises also no idea how to deal with parametrized strings

As im fairly new to javascript id like to hear any ideas