So this import uses the default import and put it in the moment_var variable
import moment_var from ‘moment’;
This one searchs for an export named moment and imports it like that
import {moment} from ‘moment’;
And this one does the same as above but rename the variable to moment_var
import {moment} as moment_var from ‘moment’;
That’s as i understand the use cases of the import/export so far.