[BUGFIX] Fix support for non-Latin characters (#1072)

* solve 1068

* resolve problems

* resolve npm problem

* Merge master and rebuild, fix lint error

* Create fresh package-lock.json

Co-authored-by: محمدرضا ضربی زاده <mohammad.zarbizadeh@samim.net>
Co-authored-by: Matt Triff <matt.triff@gmail.com>

public/assets/scripts/choices.js

@@ -1264,7 +1264,8 @@ var Choices = /** @class */function () {
     var hasActiveDropdown = this.dropdown.isActive;
     var hasItems = this.itemList.hasChildren();
     var keyString = String.fromCharCode(keyCode);
-    var wasAlphaNumericChar = /[a-zA-Z0-9-_ ]/.test(keyString);
+    // eslint-disable-next-line no-control-regex
+    var wasPrintableChar = /[^\x00-\x1F]/.test(keyString);
     var BACK_KEY = constants_1.KEY_CODES.BACK_KEY,
       DELETE_KEY = constants_1.KEY_CODES.DELETE_KEY,
       ENTER_KEY = constants_1.KEY_CODES.ENTER_KEY,
@@ -1274,15 +1275,15 @@ var Choices = /** @class */function () {
       DOWN_KEY = constants_1.KEY_CODES.DOWN_KEY,
       PAGE_UP_KEY = constants_1.KEY_CODES.PAGE_UP_KEY,
       PAGE_DOWN_KEY = constants_1.KEY_CODES.PAGE_DOWN_KEY;
-    if (!this._isTextElement && !hasActiveDropdown && wasAlphaNumericChar) {
+    if (!this._isTextElement && !hasActiveDropdown && wasPrintableChar) {
       this.showDropdown();
       if (!this.input.isFocussed) {
         /*
           We update the input value with the pressed key as
           the input was not focussed at the time of key press
           therefore does not have the value of the key.
         */
-        this.input.value += keyString.toLowerCase();
+        this.input.value += event.key.toLowerCase();
       }
     }
     switch (keyCode) {

src/scripts/choices.ts

@@ -1441,7 +1441,8 @@ class Choices implements Choices {
     const hasActiveDropdown = this.dropdown.isActive;
     const hasItems = this.itemList.hasChildren();
     const keyString = String.fromCharCode(keyCode);
-    const wasAlphaNumericChar = /[a-zA-Z0-9-_ ]/.test(keyString);
+    // eslint-disable-next-line no-control-regex
+    const wasPrintableChar = /[^\x00-\x1F]/.test(keyString);
 
     const {
       BACK_KEY,
@@ -1455,7 +1456,7 @@ class Choices implements Choices {
       PAGE_DOWN_KEY,
     } = KEY_CODES;
 
-    if (!this._isTextElement && !hasActiveDropdown && wasAlphaNumericChar) {
+    if (!this._isTextElement && !hasActiveDropdown && wasPrintableChar) {
       this.showDropdown();
 
       if (!this.input.isFocussed) {
@@ -1464,7 +1465,7 @@ class Choices implements Choices {
           the input was not focussed at the time of key press
           therefore does not have the value of the key.
         */
-        this.input.value += keyString.toLowerCase();
+        this.input.value += event.key.toLowerCase();
       }
     }