data-table-view: one i18next instance per element

packages/data-table-view/src/data-table-view.js

@@ -7,7 +7,7 @@ import bttn from 'datatables.net-buttons-dt';
 import bttn2 from 'datatables.net-buttons';
 import bttnHtml5 from 'datatables.net-buttons/js/buttons.html5.js';
 import bttnPrint from 'datatables.net-buttons/js/buttons.print.js';
-import {i18n} from './i18n';
+import {createInstance} from './i18n';
 import {css, html, unsafeCSS} from 'lit-element';
 import de from '../assets/datatables/i18n/German';
 import en from '../assets/datatables/i18n/English';
@@ -28,7 +28,8 @@ bttnPrint(window, $);
 export class DataTableView extends AdapterLitElement {
     constructor() {
         super();
-        this.lang = 'de';
+        this._i18n = createInstance();
+        this.lang = this._i18n.language;
         // datatable properties
         this.table = null;
         this.responsive = null;
@@ -100,6 +101,7 @@ export class DataTableView extends AdapterLitElement {
 
     set_datatable(data, languageChange = false) {
         const lang_obj = this.lang === 'de' ? de : en;
+        const i18n = this._i18n;
 
         if (typeof this.columns === 'undefined' || !this.columns.length) {
             if (data.length)
@@ -229,7 +231,7 @@ export class DataTableView extends AdapterLitElement {
 
         changedProperties.forEach((oldValue, propName) => {
             if (propName === "lang") {
-                i18n.changeLanguage(this.lang).catch(e => { console.log(e);});
+                this._i18n.changeLanguage(this.lang).catch(e => { console.log(e);});
                 languageChange = true;
             }
         });

packages/data-table-view/src/dbp-data-table-view-demo.js

 import {AuthKeycloak, LoginButton} from '@dbp-toolkit/auth';
 import {DataTableView} from './data-table-view.js';
-import {i18n} from './i18n';
+import {createInstance} from './i18n';
 import {css, html} from 'lit-element';
 import {ScopedElementsMixin} from '@open-wc/scoped-elements';
 import * as commonUtils from '@dbp-toolkit/common/utils';
@@ -10,7 +10,8 @@ import DBPLitElement from "@dbp-toolkit/common/dbp-lit-element";
 export class DataTableViewDemo extends ScopedElementsMixin(DBPLitElement) {
     constructor() {
         super();
-        this.lang = 'de';
+        this._i18n = createInstance();
+        this.lang = this._i18n.language;
         this.entryPointUrl = '';
         this.noAuth = false;
     }
@@ -100,7 +101,7 @@ export class DataTableViewDemo extends ScopedElementsMixin(DBPLitElement) {
     update(changedProperties) {
         changedProperties.forEach((oldValue, propName) => {
             if (propName === "lang") {
-                i18n.changeLanguage(this.lang);
+                this._i18n.changeLanguage(this.lang);
             }
         });
 

packages/data-table-view/src/i18n.js

-import i18next from 'i18next';
+import {createInstance as _createInstance} from '@dbp-toolkit/common/i18next.js';
 
 import de from './i18n/de/translation.json';
 import en from './i18n/en/translation.json';
 
-const i18n = i18next.createInstance();
-
-i18n.init({
-    lng: 'de',
-    fallbackLng: ['de'],
-    debug: false,
-    initImmediate: false, // Don't init async
-    resources: {
-        en: {translation: en},
-        de: {translation: de}
-    },
-});
-
-console.assert(i18n.isInitialized);
-
-function dateTimeFormat(date, options) {
-    return new Intl.DateTimeFormat(i18n.languages, options).format(date);
-}
-
-function numberFormat(number, options) {
-    return new Intl.NumberFormat(i18n.languages, options).format(number);
-}
-
-export {i18n, dateTimeFormat, numberFormat};
+export function createInstance() {
+    return _createInstance({en: en, de: de}, 'de', 'en');
+}
\ No newline at end of file