example.js

    const state = {
      translations: {
        currentLocale: 'english',
        english: {
          mainPage: {
            submitButton: 'Submit',
          },
        },
        russian: {
          mainPage: {
            submitButton: 'Отправить',
          },
        },
      },
    };

    const getCurrentLocale = state => state.currentLocale;

    const getTranslation = (state, path) => {
      const { currentLocale } = state.translations;

      return _.get(state.translations[currentLocale], path);
    }

    const mapStateToProps = state => {
      submitButtonText: getTranslation(state, 'mainPage.submitButton')
    }