react native - Listening for Auth Success From Realm Sync Server -

i'm playing around realm , realm object server , i've got things working structure of blocking me. i'm performing basic login so:

realm.sync.user.login('http://ipaddress:9080', 'user', 'password', (error, user) => {   if (!error) {     console.log('success');   } else {     console.log(error);   } }); 

i know can create new realm object schema , sync config within closure. however, since want use realm object throughout application, i'd want auth process 1 step , once successful, create/get realm object can use throughout rest of application, including listening events.

if had sort of structure so...

- src -- realm ---- auth.js // auth ---- index.js // exports realm object -- app.js - index.ios.js - index.android.js 

with app.js being main entry point application, i'd want set state on changes when login successful, can allow other parts of application available. don't want auth code directly inside app.js; i'd rather import that.

any suggestions?

this looks more general question nodejs server patterns. read, need sort of state established before starting actual application (in case, opened realm).

i recommend exporting function auth.js returns promise returns realm object. can cached within auth.js in order eliminate re-authenticating , re-opening realm everytime requested.

in app.js, you'll need call method whenever need realm. can done before server initialization or whenever realm needed after initialization.