For localization, to the producers or the clients, they probably prefer something like a full stacked CMS rather than a JSON/XML file as they are not keen with all those brackets and double quotes. To the front-end developers, on the other hand, they probably prefer the JSON/XML solution over the CMS solution as it is way easier to construct and to build with a JSON/XML localization system.

I had this issue before and at some point I learned some PHP to build a simple CMS just because of that. Until one of my ex-colleague Sylvain Tran introduce me of using Google Sheets + PHP to generate the localization files, everything has changed and I found it really handy for handling localization of my projects. Based on that to create my own set up with Node.js and I would like to share it here...