Preventing JS ES6 Code Formatting

I would like to use PhpStorm for developing Javascript but there is a formatting that I can't get rid off, it's the following.

This code

export default DS.ActiveModelAdapter.extend({
  namespace: 'api'
});

Becomes

export default
DS.ActiveModelAdapter.extend({
  namespace: 'api'
});

I looked in Code Styles > Javascript and could not find the setting to prevent this formatting.