edger.language().then((data) => {
  const { lang, name } = data;
  console.log('Current language:', lang, name);
}).catch(error => {
  console.error(error);
});

async function language() {
  try {
    return await edger.language();
  } catch (error) {
    console.error(error);
  }
}

const listener = (payload) => {
  // Event handling...
}

// add listener
edger.addEventListener('some-event', listener);

// or 
// onAction() is an alias of addEventListener().
edger.onAction('some-event', listener);

// remove listener
edger.removeEventListener('some-event', listener);

// remove all listeners
edger.removeAllListeners();

const listener = (payload) => {
  const { lang, name } = payload;
  console.log('Current language:', lang, name);
}

edger.addEventListener('language', listener);