How to use the cp-translations.getPoFilePath function in cp-translations

const I18NHelper = require('cp-i18n-lib');
const CpTranslations = require('cp-translations');

const i18nHelper = new I18NHelper({
  poFilePath: CpTranslations.getPoFilePath(),
  poFileName: 'messages.po',
  domain: 'coder-dojo-platform',
});

module.exports = function(locale, params) {
  let translation = i18nHelper.getClosestTranslation(locale, params.key);
  if (translation) {
    if (params.context) {
      translation = translation.withContext(params.context);
    }
    translation = params.count // eslint-disable-line no-nested-ternary
      ? translation.ifPlural(params.count, params.key).fetch(params.count)
      : params.var
      ? translation.fetch(params.var)
      : translation.fetch();
  } else {

function send_notification (args, done) {
    var subject = args.subject;
    var bypassTranslation = args.bypassTranslation;
    var subjectVariables = args.subjectVariables || [];
    var subjectTranslation;
    var emailCode;
    var locale = args.locality;
    var code = args.code;
    var i18nHelper = new I18NHelper({
      poFilePath: CpTranslations.getPoFilePath(),
      poFileName: 'messages.po',
      domain: 'coder-dojo-platform'
    });

    if (options.sendemail && options.email) {
      logger.warn('email-notifications', JSON.stringify(args));
      emailCode = code + locale;
      if (!fs.existsSync(CpTranslations.getEmailTemplatePath(emailCode))) emailCode = code + 'en_US';
      if (!args.to) return done(null, {ok: false, why: 'No recipient set.'});

      if (!bypassTranslation) {
        subjectTranslation = i18nHelper.getClosestTranslation(locale, subject);
        if (subjectTranslation === null) {
          logger.warn('email-notifications', JSON.stringify({
            ok: false,
            why: 'Invalid email subject.',

handler(request, reply) {
      let locale =
        (request.query && request.query.lang) ||
        (request.app && request.app.context && request.app.context.locality) ||
        'en_US';
      locale = formatLocaleCode(locale);
      if (!fs.existsSync(CpTranslations.getPoFilePath('messages.po', locale))) {
        locale = 'en_US';
      }
      const format = request.query.format || 'jed';
      po2json.parseFile(
        CpTranslations.getPoFilePath('messages.po', locale),
        {
          format,
          domain: 'coder-dojo-platform',
        },
        reply
      );
    },
  },

handler(request, reply) {
      let locale =
        (request.query && request.query.lang) ||
        (request.app && request.app.context && request.app.context.locality) ||
        'en_US';
      locale = formatLocaleCode(locale);
      if (!fs.existsSync(CpTranslations.getPoFilePath('messages.po', locale))) {
        locale = 'en_US';
      }
      const format = request.query.format || 'jed';
      po2json.parseFile(
        CpTranslations.getPoFilePath('messages.po', locale),
        {
          format,
          domain: 'coder-dojo-platform',
        },
        reply
      );
    },
  },