po-converter.js

const { readdirSync, readFileSync, writeFileSync } = require('fs');
const converter = require('i18next-conv');
const i18nDir = './i18n';
const options = {
  skipUntranslated: true,
  keyseparator: '°#°#°#°#°'
};

const translations = {};
const files = readdirSync(i18nDir);
const numberOfFiles = files.length;
const storeTranslationsForIndex = (index) => {
  if ( index >= 0 && index < numberOfFiles) {
    const file = files[index];
    const fileSplittend = file.split('.');
    if (fileSplittend.length === 2 && fileSplittend[1] === 'po') {
      const fileContent = readFileSync(i18nDir + '/' + file, 'utf-8');
      const locale = fileSplittend[0];
      converter.gettextToI18next(locale, fileContent, options).then(function (data) {
        translations[locale] = { translation: JSON.parse(data) };
        storeTranslationsForIndex(index + 1);
      });
    } else {
      storeTranslationsForIndex(index + 1);
    }
  } else {
    writeFileSync('./i18n/resources.js', "const i18nextResources = " + JSON.stringify(translations, null, 2) + "; export default i18nextResources;");
  }
};

storeTranslationsForIndex(0);