The locale function does not work for 'de-DE'

[MarioGruda]

// import it to change locale and load localization messages
import { locale, loadMessages } from 'devextreme/localization';

import 'devextreme-intl';

// Load localized messages (English included by default)
const messagesDe = require('devextreme/localization/messages/de.json');

loadMessages(messagesDe);

// Set locale according the browser language
locale(navigator.language);
// ------------------ navigator.language is in IE and EDGE de-DE. In Chrome 'de'

Steps to Reproduce:

1. use locale(navigator.language); in IE or Edge with german languagesettings. navigator.language is 'de-DE' and does not work
2. use locale('de') in IE or Edge. This works for me.

Results You Received:

localization works only for 'de' not for 'de-DE'

Results You Expected:

Should work for 'de-DE' and 'de'

Environment Details:

Devextreme 17.1.5
InternetExplorer and Edge

[artem-kurchenko]

Hi,
 
Thanks for the report. Currently, there is no built-in logic that determines a base locale for such cases. We'll research if it's possible to support this and make an update here.