text: export const NAVIGATE_HISTORY_REQUESTED = 'NAVIGATE_HISTORY_REQUESTED';
  export const NAVIGATE_HISTORY__SUCCEEDED = 'NAVIGATE_HISTORY__SUCCEEDED';
  export const NAVIGATE_HISTORY__FAILED = 'NAVIGATE_HISTORY__FAILED';
  
  export const ALERT_REQUESTED = 'ALERT_REQUESTED';
  export const ALERT__SUCCEEDED = 'ALERT__SUCCEEDED';
  export const ALERT__FAILED = 'ALERT__FAILED';
  
  export const LOADING_REQUESTED = 'LOADING_REQUESTED';
  export const LOADING__SUCCEEDED = 'LOADING__SUCCEEDED';
  export const LOADING__FAILED = 'LOADING__FAILED';