feat: remove previous diacritic unicodes and add diacriticParser (#190

)
ghiscoding · Jan 13, 2024 · aaa9d92 · aaa9d92
1 parent 65ccbac
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diff --git a/README.md b/README.md
@@ -53,6 +53,7 @@ New Multiple-Select Options:
   - `sanitizer` can be used to sanitize HTML code and prevent XSS cross-site scripting attacks (see [demo](https://ghiscoding.github.io/multiple-select-vanilla/#/options32)).
   - `showOkButton` to add an "OK" button at the end of the multiple select option list (see [demo](https://ghiscoding.github.io/multiple-select-vanilla/#/options25))
   - `showSearchClear` show a clear button on the search filter input (see [demo](https://ghiscoding.github.io/multiple-select-vanilla/#/options34))
+  - `diacriticParser` can be used to parse and normalize diacritic signs when filtering select list (accents) (see [demo](https://ghiscoding.github.io/multiple-select-vanilla/#/options35))
 
 ## CSP Compliance
 The library is now CSP (Content Security Policy) compliant since `v0.6.0`, however there are some exceptions to be aware of. When using any html string as template (with `textTemplate`, `labelTemplate`, `renderOptionLabelAsHtml` or `useSelectOptionLabelToHtml`), you will not be fully compliant unless you return `TrustedHTML`. You can achieve this by using the `sanitizer` method in combo with [DOMPurify](https://github.com/cure53/DOMPurify) to return `TrustedHTML` as shown below and with that in place you will again be CSP compliant.

diff --git a/packages/demo/src/app-routing.ts b/packages/demo/src/app-routing.ts
@@ -47,6 +47,7 @@ import Options31 from './options/options31';
 import Options32 from './options/options32';
 import Options33 from './options/options33';
 import Options34 from './options/options34';
+import Options35 from './options/options35';
 import Methods01 from './methods/methods01';
 import Methods02 from './methods/methods02';
 import Methods03 from './methods/methods03';
@@ -124,6 +125,7 @@ export const exampleRouting = [
       { name: 'options32', view: '/src/options/options32.html', viewModel: Options32, title: 'Sanitizer' },
       { name: 'options33', view: '/src/options/options33.html', viewModel: Options33, title: 'Classes' },
       { name: 'options34', view: '/src/options/options34.html', viewModel: Options34, title: 'Show Search Clear' },
+      { name: 'options35', view: '/src/options/options35.html', viewModel: Options35, title: 'Custom Diacritic Parser' },
     ],
   },
   {

diff --git a/packages/demo/src/options/options35.html b/packages/demo/src/options/options35.html
@@ -0,0 +1,60 @@
+<div class="row mb-2">
+  <div class="col-md-12 title-desc">
+    <h2 class="bd-title">
+      Custom Diacritic Parser
+      <span class="float-end links">
+        Code <span class="fa fa-link"></span>
+        <span class="small">
+          <a
+            target="_blank"
+            href="https://github.com/ghiscoding/multiple-select-vanilla/blob/main/demo/src/options/options35.html"
+            >html</a
+          >
+          |
+          <a target="_blank" href="https://github.com/ghiscoding/multiple-select-vanilla/blob/main/demo/src/options/options35.ts"
+            >ts</a
+          >
+        </span>
+      </span>
+    </h2>
+    <div class="demo-subtitle">
+      Use <code>diacriticParser</code> callback option to remove diacritic signs (accents) from text while filtering items.
+    </div>
+  </div>
+</div>
+
+<div>
+  <div class="mb-3 row align-middle">
+    <label class="col-sm-2 py-1 text-end">in/out parsing</label>
+    <div class="col-sm-3">
+      <input class="form-control in-log" readonly style="background-color: #f0f0f0"/>
+    </div>
+    <div class="py-1 col-sm-1 w-35px">=&gt;</div>
+    <div class="col-sm-3 text-start">
+      <input class="form-control out-log" readonly style="background-color: #f0f0f0"/>
+    </div>
+  </div>
+
+  <hr/>
+
+  <div class="mb-3 row">
+    <label class="col-sm-2 text-end">Select</label>
+
+    <div class="col-sm-9">
+      <select id="select1" multiple="multiple" data-test="select1" class="full-width">
+        <option value="1">Janvier</option>
+        <option value="2">Février</option>
+        <option value="3">Mars</option>
+        <option value="4">Avril</option>
+        <option value="5">Mai</option>
+        <option value="6">Juin</option>
+        <option value="7">Juillet</option>
+        <option value="8">Août</option>
+        <option value="9">Septembre</option>
+        <option value="10">Octobre</option>
+        <option value="11">Novembre</option>
+        <option value="12">Décembre</option>
+      </select>
+    </div>
+  </div>
+</div>
diff --git a/packages/demo/src/options/options35.ts b/packages/demo/src/options/options35.ts
@@ -0,0 +1,51 @@
+import { multipleSelect, MultipleSelectInstance } from 'multiple-select-vanilla';
+
+// map of diacritic signs against each alphabetical character
+const diacritics = {
+  a: 'ÀÁÂÃÄÅàáâãäåĀāąĄ',
+  c: 'ÇçćĆčČ',
+  d: 'đĐďĎ',
+  e: 'ÈÉÊËèéêëěĚĒēęĘ',
+  i: 'ÌÍÎÏìíîïĪī',
+  l: 'łŁ',
+  n: 'ÑñňŇńŃ',
+  o: 'ÒÓÔÕÕÖØòóôõöøŌō',
+  r: 'řŘ',
+  s: 'ŠšśŚ',
+  t: 'ťŤ',
+  u: 'ÙÚÛÜùúûüůŮŪū',
+  y: 'ŸÿýÝ',
+  z: 'ŽžżŻźŹ',
+};
+
+export default class Example {
+  ms1?: MultipleSelectInstance;
+  inLogElm!: HTMLInputElement;
+  outLogElm!: HTMLInputElement;
+
+  mount() {
+    this.inLogElm = document.querySelector('input.in-log') as HTMLInputElement;
+    this.outLogElm = document.querySelector('input.out-log') as HTMLInputElement;
+    this.ms1 = multipleSelect('#select1', {
+      filter: true,
+      showSearchClear: true,
+      placeholder: 'search with "é" or "û"',
+      diacriticParser: (text: string) => {
+        const output = text
+          .split('')
+          .map((l) => Object.keys(diacritics).find((k) => diacritics[k as keyof typeof diacritics].includes(l)) || l)
+          .join('');
+
+        this.inLogElm.value = text;
+        this.outLogElm.value = output;
+        return output;
+      },
+    }) as MultipleSelectInstance;
+  }
+
+  unmount() {
+    // destroy ms instance(s) to avoid DOM leaks
+    this.ms1?.destroy();
+    this.ms1 = undefined;
+  }
+}
diff --git a/packages/demo/src/style.scss b/packages/demo/src/style.scss
@@ -146,3 +146,7 @@ $side-menu-width: 250px;
   top: -2px;
   // margin: 0 5px;
 }
+
+.w-35px {
+  width: 35px;
+}
diff --git a/packages/multiple-select-vanilla/src/MultipleSelectInstance.ts b/packages/multiple-select-vanilla/src/MultipleSelectInstance.ts
@@ -1450,8 +1450,8 @@ export class MultipleSelectInstance {
           const rowLabel = `${(row as OptGroupRowData)?.label ?? ''}`;
           if (row !== undefined && row !== null) {
             const visible = this.options.customFilter({
-              label: removeDiacritics(rowLabel.toString().toLowerCase()),
-              search: removeDiacritics(search),
+              label: removeDiacritics(rowLabel.toString().toLowerCase(), this.options.diacriticParser),
+              search: removeDiacritics(search, this.options.diacriticParser),
               originalLabel: rowLabel,
               originalSearch,
               row,
@@ -1469,8 +1469,8 @@ export class MultipleSelectInstance {
             if (child !== undefined && child !== null) {
               const childText = `${(child as OptionRowData)?.text ?? ''}`;
               child.visible = this.options.customFilter({
-                text: removeDiacritics(childText.toString().toLowerCase()),
-                search: removeDiacritics(search),
+                text: removeDiacritics(childText.toString().toLowerCase(), this.options.diacriticParser),
+                search: removeDiacritics(search, this.options.diacriticParser),
                 originalText: childText,
                 originalSearch,
                 row: child,
@@ -1483,8 +1483,8 @@ export class MultipleSelectInstance {
       } else {
         const rowText = `${(row as OptionRowData)?.text ?? ''}`;
         row.visible = this.options.customFilter({
-          text: removeDiacritics(rowText.toString().toLowerCase()),
-          search: removeDiacritics(search),
+          text: removeDiacritics(rowText.toString().toLowerCase(), this.options.diacriticParser),
+          search: removeDiacritics(search, this.options.diacriticParser),
           originalText: rowText,
           originalSearch,
           row,

diff --git a/packages/multiple-select-vanilla/src/interfaces/multipleSelectOption.interface.ts b/packages/multiple-select-vanilla/src/interfaces/multipleSelectOption.interface.ts
@@ -251,6 +251,9 @@ export interface MultipleSelectOption extends MultipleSelectLocale {
   /** Fires when a checkbox filter is changed. */
   onFilter: (text?: string) => void;
 
+  /** Custom parser to remove diacritic signs (accents) from characters when filtering select list. */
+  diacriticParser: (text: string) => string;
+
   /**
    * Sanitizes HTML code, for example `<script>`, to prevents XSS attacks.
    * A library like DOM Purify could be used to sanitize html code, for example: `sanitizer: (dirtyHtml) => DOMPurify.sanitize(dirtyHtml || '')`

diff --git a/packages/multiple-select-vanilla/src/utils/utils.ts b/packages/multiple-select-vanilla/src/utils/utils.ts
@@ -137,187 +137,17 @@ export function toCamelCase(str: string) {
   return str.replace(/[\W_]+(.)/g, (_match, char) => char.toUpperCase());
 }
 
-export function removeDiacritics(str: string): string {
+export function removeDiacritics(str: string, customParser?: (t: string) => string): string {
   if (typeof str !== 'string') {
     return str;
   }
-  if (str.normalize) {
+  if (typeof customParser === 'function') {
+    return customParser(str);
+  }
+  if (typeof str.normalize === 'function') {
     return str.normalize('NFD').replace(/[\u0300-\u036F]/g, '');
   }
-  const defaultDiacriticsRemovalMap = [
-    {
-      base: 'A',
-      letters:
-        /[\u0041\u24B6\uFF21\u00C0\u00C1\u00C2\u1EA6\u1EA4\u1EAA\u1EA8\u00C3\u0100\u0102\u1EB0\u1EAE\u1EB4\u1EB2\u0226\u01E0\u00C4\u01DE\u1EA2\u00C5\u01FA\u01CD\u0200\u0202\u1EA0\u1EAC\u1EB6\u1E00\u0104\u023A\u2C6F]/g,
-    },
-    { base: 'AA', letters: /[\uA732]/g },
-    { base: 'AE', letters: /[\u00C6\u01FC\u01E2]/g },
-    { base: 'AO', letters: /[\uA734]/g },
-    { base: 'AU', letters: /[\uA736]/g },
-    { base: 'AV', letters: /[\uA738\uA73A]/g },
-    { base: 'AY', letters: /[\uA73C]/g },
-    { base: 'B', letters: /[\u0042\u24B7\uFF22\u1E02\u1E04\u1E06\u0243\u0182\u0181]/g },
-    { base: 'C', letters: /[\u0043\u24B8\uFF23\u0106\u0108\u010A\u010C\u00C7\u1E08\u0187\u023B\uA73E]/g },
-    { base: 'D', letters: /[\u0044\u24B9\uFF24\u1E0A\u010E\u1E0C\u1E10\u1E12\u1E0E\u0110\u018B\u018A\u0189\uA779]/g },
-    { base: 'DZ', letters: /[\u01F1\u01C4]/g },
-    { base: 'Dz', letters: /[\u01F2\u01C5]/g },
-    {
-      base: 'E',
-      letters:
-        /[\u0045\u24BA\uFF25\u00C8\u00C9\u00CA\u1EC0\u1EBE\u1EC4\u1EC2\u1EBC\u0112\u1E14\u1E16\u0114\u0116\u00CB\u1EBA\u011A\u0204\u0206\u1EB8\u1EC6\u0228\u1E1C\u0118\u1E18\u1E1A\u0190\u018E]/g,
-    },
-    { base: 'F', letters: /[\u0046\u24BB\uFF26\u1E1E\u0191\uA77B]/g },
-    {
-      base: 'G',
-      letters: /[\u0047\u24BC\uFF27\u01F4\u011C\u1E20\u011E\u0120\u01E6\u0122\u01E4\u0193\uA7A0\uA77D\uA77E]/g,
-    },
-    { base: 'H', letters: /[\u0048\u24BD\uFF28\u0124\u1E22\u1E26\u021E\u1E24\u1E28\u1E2A\u0126\u2C67\u2C75\uA78D]/g },
-    {
-      base: 'I',
-      letters:
-        /[\u0049\u24BE\uFF29\u00CC\u00CD\u00CE\u0128\u012A\u012C\u0130\u00CF\u1E2E\u1EC8\u01CF\u0208\u020A\u1ECA\u012E\u1E2C\u0197]/g,
-    },
-    { base: 'J', letters: /[\u004A\u24BF\uFF2A\u0134\u0248]/g },
-    { base: 'K', letters: /[\u004B\u24C0\uFF2B\u1E30\u01E8\u1E32\u0136\u1E34\u0198\u2C69\uA740\uA742\uA744\uA7A2]/g },
-    {
-      base: 'L',
-      letters: /[\u004C\u24C1\uFF2C\u013F\u0139\u013D\u1E36\u1E38\u013B\u1E3C\u1E3A\u0141\u023D\u2C62\u2C60\uA748\uA746\uA780]/g,
-    },
-    { base: 'LJ', letters: /[\u01C7]/g },
-    { base: 'Lj', letters: /[\u01C8]/g },
-    { base: 'M', letters: /[\u004D\u24C2\uFF2D\u1E3E\u1E40\u1E42\u2C6E\u019C]/g },
-    {
-      base: 'N',
-      letters: /[\u004E\u24C3\uFF2E\u01F8\u0143\u00D1\u1E44\u0147\u1E46\u0145\u1E4A\u1E48\u0220\u019D\uA790\uA7A4]/g,
-    },
-    { base: 'NJ', letters: /[\u01CA]/g },
-    { base: 'Nj', letters: /[\u01CB]/g },
-    {
-      base: 'O',
-      letters:
-        /[\u004F\u24C4\uFF2F\u00D2\u00D3\u00D4\u1ED2\u1ED0\u1ED6\u1ED4\u00D5\u1E4C\u022C\u1E4E\u014C\u1E50\u1E52\u014E\u022E\u0230\u00D6\u022A\u1ECE\u0150\u01D1\u020C\u020E\u01A0\u1EDC\u1EDA\u1EE0\u1EDE\u1EE2\u1ECC\u1ED8\u01EA\u01EC\u00D8\u01FE\u0186\u019F\uA74A\uA74C]/g,
-    },
-    { base: 'OI', letters: /[\u01A2]/g },
-    { base: 'OO', letters: /[\uA74E]/g },
-    { base: 'OU', letters: /[\u0222]/g },
-    { base: 'P', letters: /[\u0050\u24C5\uFF30\u1E54\u1E56\u01A4\u2C63\uA750\uA752\uA754]/g },
-    { base: 'Q', letters: /[\u0051\u24C6\uFF31\uA756\uA758\u024A]/g },
-    {
-      base: 'R',
-      letters: /[\u0052\u24C7\uFF32\u0154\u1E58\u0158\u0210\u0212\u1E5A\u1E5C\u0156\u1E5E\u024C\u2C64\uA75A\uA7A6\uA782]/g,
-    },
-    {
-      base: 'S',
-      letters: /[\u0053\u24C8\uFF33\u1E9E\u015A\u1E64\u015C\u1E60\u0160\u1E66\u1E62\u1E68\u0218\u015E\u2C7E\uA7A8\uA784]/g,
-    },
-    {
-      base: 'T',
-      letters: /[\u0054\u24C9\uFF34\u1E6A\u0164\u1E6C\u021A\u0162\u1E70\u1E6E\u0166\u01AC\u01AE\u023E\uA786]/g,
-    },
-    { base: 'TZ', letters: /[\uA728]/g },
-    {
-      base: 'U',
-      letters:
-        /[\u0055\u24CA\uFF35\u00D9\u00DA\u00DB\u0168\u1E78\u016A\u1E7A\u016C\u00DC\u01DB\u01D7\u01D5\u01D9\u1EE6\u016E\u0170\u01D3\u0214\u0216\u01AF\u1EEA\u1EE8\u1EEE\u1EEC\u1EF0\u1EE4\u1E72\u0172\u1E76\u1E74\u0244]/g,
-    },
-    { base: 'V', letters: /[\u0056\u24CB\uFF36\u1E7C\u1E7E\u01B2\uA75E\u0245]/g },
-    { base: 'VY', letters: /[\uA760]/g },
-    { base: 'W', letters: /[\u0057\u24CC\uFF37\u1E80\u1E82\u0174\u1E86\u1E84\u1E88\u2C72]/g },
-    { base: 'X', letters: /[\u0058\u24CD\uFF38\u1E8A\u1E8C]/g },
-    {
-      base: 'Y',
-      letters: /[\u0059\u24CE\uFF39\u1EF2\u00DD\u0176\u1EF8\u0232\u1E8E\u0178\u1EF6\u1EF4\u01B3\u024E\u1EFE]/g,
-    },
-    { base: 'Z', letters: /[\u005A\u24CF\uFF3A\u0179\u1E90\u017B\u017D\u1E92\u1E94\u01B5\u0224\u2C7F\u2C6B\uA762]/g },
-    {
-      base: 'a',
-      letters:
-        /[\u0061\u24D0\uFF41\u1E9A\u00E0\u00E1\u00E2\u1EA7\u1EA5\u1EAB\u1EA9\u00E3\u0101\u0103\u1EB1\u1EAF\u1EB5\u1EB3\u0227\u01E1\u00E4\u01DF\u1EA3\u00E5\u01FB\u01CE\u0201\u0203\u1EA1\u1EAD\u1EB7\u1E01\u0105\u2C65\u0250]/g,
-    },
-    { base: 'aa', letters: /[\uA733]/g },
-    { base: 'ae', letters: /[\u00E6\u01FD\u01E3]/g },
-    { base: 'ao', letters: /[\uA735]/g },
-    { base: 'au', letters: /[\uA737]/g },
-    { base: 'av', letters: /[\uA739\uA73B]/g },
-    { base: 'ay', letters: /[\uA73D]/g },
-    { base: 'b', letters: /[\u0062\u24D1\uFF42\u1E03\u1E05\u1E07\u0180\u0183\u0253]/g },
-    { base: 'c', letters: /[\u0063\u24D2\uFF43\u0107\u0109\u010B\u010D\u00E7\u1E09\u0188\u023C\uA73F\u2184]/g },
-    { base: 'd', letters: /[\u0064\u24D3\uFF44\u1E0B\u010F\u1E0D\u1E11\u1E13\u1E0F\u0111\u018C\u0256\u0257\uA77A]/g },
-    { base: 'dz', letters: /[\u01F3\u01C6]/g },
-    {
-      base: 'e',
-      letters:
-        /[\u0065\u24D4\uFF45\u00E8\u00E9\u00EA\u1EC1\u1EBF\u1EC5\u1EC3\u1EBD\u0113\u1E15\u1E17\u0115\u0117\u00EB\u1EBB\u011B\u0205\u0207\u1EB9\u1EC7\u0229\u1E1D\u0119\u1E19\u1E1B\u0247\u025B\u01DD]/g,
-    },
-    { base: 'f', letters: /[\u0066\u24D5\uFF46\u1E1F\u0192\uA77C]/g },
-    {
-      base: 'g',
-      letters: /[\u0067\u24D6\uFF47\u01F5\u011D\u1E21\u011F\u0121\u01E7\u0123\u01E5\u0260\uA7A1\u1D79\uA77F]/g,
-    },
-    {
-      base: 'h',
-      letters: /[\u0068\u24D7\uFF48\u0125\u1E23\u1E27\u021F\u1E25\u1E29\u1E2B\u1E96\u0127\u2C68\u2C76\u0265]/g,
-    },
-    { base: 'hv', letters: /[\u0195]/g },
-    {
-      base: 'i',
-      letters:
-        /[\u0069\u24D8\uFF49\u00EC\u00ED\u00EE\u0129\u012B\u012D\u00EF\u1E2F\u1EC9\u01D0\u0209\u020B\u1ECB\u012F\u1E2D\u0268\u0131]/g,
-    },
-    { base: 'j', letters: /[\u006A\u24D9\uFF4A\u0135\u01F0\u0249]/g },
-    { base: 'k', letters: /[\u006B\u24DA\uFF4B\u1E31\u01E9\u1E33\u0137\u1E35\u0199\u2C6A\uA741\uA743\uA745\uA7A3]/g },
-    {
-      base: 'l',
-      letters:
-        /[\u006C\u24DB\uFF4C\u0140\u013A\u013E\u1E37\u1E39\u013C\u1E3D\u1E3B\u017F\u0142\u019A\u026B\u2C61\uA749\uA781\uA747]/g,
-    },
-    { base: 'lj', letters: /[\u01C9]/g },
-    { base: 'm', letters: /[\u006D\u24DC\uFF4D\u1E3F\u1E41\u1E43\u0271\u026F]/g },
-    {
-      base: 'n',
-      letters: /[\u006E\u24DD\uFF4E\u01F9\u0144\u00F1\u1E45\u0148\u1E47\u0146\u1E4B\u1E49\u019E\u0272\u0149\uA791\uA7A5]/g,
-    },
-    { base: 'nj', letters: /[\u01CC]/g },
-    {
-      base: 'o',
-      letters:
-        /[\u006F\u24DE\uFF4F\u00F2\u00F3\u00F4\u1ED3\u1ED1\u1ED7\u1ED5\u00F5\u1E4D\u022D\u1E4F\u014D\u1E51\u1E53\u014F\u022F\u0231\u00F6\u022B\u1ECF\u0151\u01D2\u020D\u020F\u01A1\u1EDD\u1EDB\u1EE1\u1EDF\u1EE3\u1ECD\u1ED9\u01EB\u01ED\u00F8\u01FF\u0254\uA74B\uA74D\u0275]/g,
-    },
-    { base: 'oi', letters: /[\u01A3]/g },
-    { base: 'ou', letters: /[\u0223]/g },
-    { base: 'oo', letters: /[\uA74F]/g },
-    { base: 'p', letters: /[\u0070\u24DF\uFF50\u1E55\u1E57\u01A5\u1D7D\uA751\uA753\uA755]/g },
-    { base: 'q', letters: /[\u0071\u24E0\uFF51\u024B\uA757\uA759]/g },
-    {
-      base: 'r',
-      letters: /[\u0072\u24E1\uFF52\u0155\u1E59\u0159\u0211\u0213\u1E5B\u1E5D\u0157\u1E5F\u024D\u027D\uA75B\uA7A7\uA783]/g,
-    },
-    {
-      base: 's',
-      letters: /[\u0073\u24E2\uFF53\u00DF\u015B\u1E65\u015D\u1E61\u0161\u1E67\u1E63\u1E69\u0219\u015F\u023F\uA7A9\uA785\u1E9B]/g,
-    },
-    {
-      base: 't',
-      letters: /[\u0074\u24E3\uFF54\u1E6B\u1E97\u0165\u1E6D\u021B\u0163\u1E71\u1E6F\u0167\u01AD\u0288\u2C66\uA787]/g,
-    },
-    { base: 'tz', letters: /[\uA729]/g },
-    {
-      base: 'u',
-      letters:
-        /[\u0075\u24E4\uFF55\u00F9\u00FA\u00FB\u0169\u1E79\u016B\u1E7B\u016D\u00FC\u01DC\u01D8\u01D6\u01DA\u1EE7\u016F\u0171\u01D4\u0215\u0217\u01B0\u1EEB\u1EE9\u1EEF\u1EED\u1EF1\u1EE5\u1E73\u0173\u1E77\u1E75\u0289]/g,
-    },
-    { base: 'v', letters: /[\u0076\u24E5\uFF56\u1E7D\u1E7F\u028B\uA75F\u028C]/g },
-    { base: 'vy', letters: /[\uA761]/g },
-    { base: 'w', letters: /[\u0077\u24E6\uFF57\u1E81\u1E83\u0175\u1E87\u1E85\u1E98\u1E89\u2C73]/g },
-    { base: 'x', letters: /[\u0078\u24E7\uFF58\u1E8B\u1E8D]/g },
-    {
-      base: 'y',
-      letters: /[\u0079\u24E8\uFF59\u1EF3\u00FD\u0177\u1EF9\u0233\u1E8F\u00FF\u1EF7\u1E99\u1EF5\u01B4\u024F\u1EFF]/g,
-    },
-    { base: 'z', letters: /[\u007A\u24E9\uFF5A\u017A\u1E91\u017C\u017E\u1E93\u1E95\u01B6\u0225\u0240\u2C6C\uA763]/g },
-  ];
-
-  return defaultDiacriticsRemovalMap.reduce((string, { letters, base }) => {
-    return string.replace(letters, base);
-  }, str);
+  throw new Error(
+    '[Multiple-Select-Vanilla] `normalize()` function is not defined, you can optionally provide a custom parser via the `diacriticParser` option.'
+  );
 }