Fix @beyonk/svelte-datepicker local issue

It's a hack to fix beyonk-group/svelte-datepicker#56

But it's not the end fix.

src/lib/admin/components/PaginatedTable/Filter.svelte

@@ -2,7 +2,7 @@
 	import ConfigFilter from '$lib/admin/ConfigFilter';
 	import FilterType from '$lib/admin/FilterType';
 	import DatePicker from '@beyonk/svelte-datepicker/src/components/DatePicker.svelte';
-	import { dayjs } from '@beyonk/svelte-datepicker/src/components/lib/date-utils';
+	import { dayjs } from '$lib/utils/date-utils';
 
 	export let filter: ConfigFilter;
 	export let change_callback: Function;

src/lib/utils/date-utils.ts

@@ -0,0 +1,26 @@
+import * as baseDayJs from 'dayjs/esm/index.js';
+import localeData from 'dayjs/esm/plugin/localeData/index.js';
+import minMax from 'dayjs/esm/plugin/minMax/index.js';
+import isSameOrBefore from 'dayjs/esm/plugin/isSameOrBefore/index.js';
+import isSameOrAfter from 'dayjs/esm/plugin/isSameOrAfter/index.js';
+
+let dayjs = baseDayJs;
+
+if (baseDayJs.default) {
+    dayjs = baseDayJs.default;
+}
+
+if (dayjs && dayjs.extend) {
+  dayjs.extend(localeData);
+  dayjs.extend(minMax);
+  dayjs.extend(isSameOrBefore);
+  dayjs.extend(isSameOrAfter);
+} else if (!dayjs) {
+  console.error('"dayjs" import is empty.');
+} else if (!dayjs.extend) {
+  console.error('"dayjs" import does not implement "extend".');
+}
+
+export {
+    dayjs
+};

svelte.config.js

@@ -3,7 +3,7 @@ import preprocess from 'svelte-preprocess';
 import path from 'path';
 import fs from 'fs';
 
-const copyPlugin = function (options) {
+const copyFile = function (options) {
 	return function () {
 		const targetDir = path.dirname(options.target);
 		if (!fs.existsSync(targetDir)){
@@ -29,14 +29,18 @@ const config = {
 		vite: {
 			prebundleSvelteLibraries: true,
 			plugins: [
-				copyPlugin({
+				copyFile({
 					source:  './node_modules/bootstrap/dist/js/bootstrap.bundle.min.js',
 					target: './static/bootstrap.min.js',
 				}),
-				copyPlugin({
+				copyFile({
 					source:  './node_modules/bootstrap/dist/js/bootstrap.bundle.min.js.map',
 					target: './static/bootstrap.min.js.map',
 				}),
+				copyFile({
+					source:  './src/lib/utils/date-utils.ts',
+					target: './node_modules/@beyonk/svelte-datepicker/src/components/lib/date-utils.js',
+				}),
 			],
 			ssr: {
 				noExternal: [ 'dayjs' ]