xntalk / xntalk-rnapp

import NavigationActions from './NavigationActions'; /**
                                                      * 
                                                      *
                                                      * Helpers for navigation.
                                                      */

import invariant from './utils/invariant';

export default function (navigation) {
  return {
    ...navigation,
    goBack: key => {
      let actualizedKey = key;
      if (key === undefined && navigation.state.key) {
        invariant(typeof navigation.state.key === 'string', 'key should be a string');
        actualizedKey = navigation.state.key;
      }
      return navigation.dispatch(NavigationActions.back({ key: actualizedKey }));
    },
    navigate: (routeName, params, action) => navigation.dispatch(NavigationActions.navigate({ routeName, params, action })),
    /**
     * For updating current route params. For example the nav bar title and
     * buttons are based on the route params.
     * This means `setParams` can be used to update nav bar for example.
     */
    setParams: params => {
      invariant(navigation.state.key && typeof navigation.state.key === 'string', 'setParams cannot be called by root navigator');
      const key = navigation.state.key;
      return navigation.dispatch(NavigationActions.setParams({ params, key }));
    }
  };
}