function getConfiguration() {
  const folders = getDirectories(dirname(__filename));

  let questions = [];
  let answers = [];

  folders.forEach((folder) => {
    SUPPORTED_LANGUAGES.forEach((language) => {
      const questionFile = join(folder, `questions.${language}.json`);
      const answerFile = join(folder, `answers.${language}.json`);

      if (existsSync(questionFile)) {
        const newQuestions = JSON.parse(readFileSync(questionFile, 'utf8'));
        questions = questions.concat(addLanguage(newQuestions, language));
      }

      if (existsSync(answerFile)) {
        const newAnswers = JSON.parse(readFileSync(answerFile, 'utf8'));
        answers = answers.concat(addLanguage(newAnswers, language));
      }
    });
  });

  const brainConfig = {
    questions,
    answers,
  };

  return brainConfig;
}
@description Return brain configuration.
@returns {object} Return brain configuration.
@example
const config = getConfiguration();