fix bug that made it impossible to enter the value 0 for currencies w…

…ithout decimal places

package.json

@@ -1,6 +1,6 @@
 {
   "name": "intl-currency-input",
-  "version": "2.0.0",
+  "version": "2.0.1",
   "description": "This library allows you to create input fields for currencies. Version 2 is completely overhauled, written in TypeScript and includes test cases.",
   "main": "index.js",
   "module": "index.mjs",
@@ -44,7 +44,7 @@
     "webpack-dev-server": "^4.15.1"
   },
   "dependencies": {
-    "moneydew": "^1.0.0"
+    "moneydew": "^1.0.1"
   },
   "files": [
     "index.d.ts",

src/index.ts

@@ -77,7 +77,6 @@ export default class IntlCurrencyInput {
         const posMatch: boolean = this._posPrefixPattern.test(this._input.value) && this._posSuffixPattern.test(this._input.value);
         const negMatch: boolean = this._negPrefixPattern.test(this._input.value) && this._negSuffixPattern.test(this._input.value);
 
-
         if (posMatch || negMatch) {
             const negativePriority = this._formatter.positiveSign === '';
             const matchedPrefix = negativePriority ?
@@ -138,7 +137,7 @@ export default class IntlCurrencyInput {
                     numberRegexPattern += '[1-9]\\d*' + esc(this._formatter.decimalSeparator) + '\\d{0,' + this._money.floatingPointPrecision + '})';
                 }
             } else {
-                numberRegexPattern += '[1-9]\\d*';
+                numberRegexPattern += '(0|[1-9]\\d*)';
             }
             numberRegexPattern += '$';
 
@@ -159,6 +158,8 @@ export default class IntlCurrencyInput {
                 rawValue = rawValue.substring(1);
             }
 
+
+
             if (valuePattern.test(rawValue)) {
                 const groupSize = this._formatter.groupSize;
                 const separator = this._formatter.groupSeparator;
@@ -201,6 +202,7 @@ export default class IntlCurrencyInput {
             inputRejected = true;
         }
 
+
         /* istanbul ignore next */
         let caretPos = this._input.selectionStart === null ? 0 : this._input.selectionStart;
         const oldCaretPos = caretPos;

tests/index.test.ts

@@ -181,6 +181,23 @@ describe('CurrencyInput', () => {
 
     });
 
+    it('should be usable for percentages', async () => {
+        input.format({
+            displayOrder: DisplayOrder.NAME_SIGN_NUMBER_SYMBOL,
+            currencyName: '',
+            currencySymbol: '%',
+            groupSeparator: '',
+            decimalSeparator: '.'
+        });
+        input.setValue('20');
+        await userEvent.type(inputElement,    '{backspace}', {
+            initialSelectionStart: 1,
+            initialSelectionEnd: 1,
+        });
+        expect(input.getValue()).toBe('0');
+        expect(inputElement.value).toBe('0%');
+    });
+
     it('should insert a zero when all numbers before decimal point are deleted', async () => {
         input.setValue('123.00');