Concept to create 2 (en and kh) languages in my app?

I would like to crate 2 (en, kh) langeuages in my app such as menu bar, simple schema error, ...
Please advise…

Check out the doc for this package, it should get you started https://atmospherejs.com/tap/i18n

Thanks for reply.
MessageFormat vs i18n??
Which one?