gitlab-org--gitlab-foss/spec/javascripts/helpers/locale_helper.js

/* eslint-disable import/prefer-default-export */

export const setLanguage = languageCode => {
  const htmlElement = document.querySelector('html');

  if (languageCode) {
    htmlElement.setAttribute('lang', languageCode);
  } else {
    htmlElement.removeAttribute('lang');
  }
};