Create a javascript file in src/lang with the name of your language or locale, e.g. de.js or de_DE.js.

Include this file in src/lang/index.js e.g.

'de_DE': require('./de_DE')

This file must export a single object message identifier : translated text:

module.exports = {
    modUserLoginButton: 'Einloggen',
    modUserLogoutButton: 'Ausloggen',
    modPrintButton: 'Drucken',

    // etc

To list all message identifiers used in the project, run the following command in the gws-client directory:

find  ./src -regex '.*tsx?$' | xargs grep __