addNavigationHelpers.js
1.35 KB
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 }));
}
};
}