text: const RELEASE_VERSION = '$version';
  module.exports.SOUNDS_BASE_URL = 'https://media.twiliocdn.com/sdk/js/client/sounds/releases/1.0.0';
  module.exports.RELEASE_VERSION = RELEASE_VERSION;
  
  /**
   * All errors we plan to use need to be defined here.
   */
  module.exports.USED_ERRORS = [
    'AuthorizationErrors.AccessTokenExpired',
    'AuthorizationErrors.AccessTokenInvalid',
    'AuthorizationErrors.AuthenticationFailed',
    'ClientErrors.BadRequest',
    'GeneralErrors.ConnectionError',
    'GeneralErrors.TransportError',
    'GeneralErrors.UnknownError',
    'MediaErrors.ClientLocalDescFailed',
    'MediaErrors.ClientRemoteDescFailed',
    'MediaErrors.ConnectionError',
    'SignalingErrors.ConnectionDisconnected',
    'SignalingErrors.ConnectionError',
  ];
  