make_locales.js

const fs = require("fs");
const path = require("path");

function getAllTranslations() {
    let pathToTranslationsDir = path.resolve("src/locales")
    let translations = {};
    let translationDir = "";

    let dirs = fs.readdirSync(pathToTranslationsDir);
    for (let idx in dirs) {
        let lang = dirs[idx];
        let localeDir = path.join(pathToTranslationsDir, lang);
        if (lang.length === 2 && fs.statSync(localeDir).isDirectory()) {
            translations[lang] = {};

            translationDir = path.resolve(path.join(pathToTranslationsDir, lang));

            let files = fs.readdirSync(translationDir);
            for (let idx in files) {
                let file = files[idx];

                if ( file === undefined || ! file.endsWith(".json")) continue;

                let dataJson = JSON.parse(fs.readFileSync(path.join(translationDir, file),"utf8"));
                
                for (let k in dataJson) {
                    translations[lang][k] = dataJson[k];
                }
            }
        }
    }

    return translations;
}

let translationsJSON = JSON.stringify(getAllTranslations());
fs.writeFileSync("assets/translations.json", translationsJSON);