How to use the expo-media-library.createAssetAsync function in expo-media-library

export async function takePhotoAsync(): Promise {
  if (!(await ensurePermissionsAsync())) return null;

  const media = await ImagePicker.launchCameraAsync(mediaOptions);
  if (!media.cancelled) {
    const asset = await MediaLibrary.createAssetAsync(media.uri);
    return await moveToPhotoCacheAsync(asset.uri);
  }
  return null;
}

const promises = photos.map(photoUri => {
        return MediaLibrary.createAssetAsync(photoUri);
      });

const promises = photos.map(photoUri => {
        return MediaLibrary.createAssetAsync(photoUri);
      });