From 3853ee7dd5885068eaf913294b16a5332b8d333c Mon Sep 17 00:00:00 2001
From: Robert Snow <snowystinger@gmail.com>
Date: Fri, 24 Oct 2025 09:22:49 +1100
Subject: [PATCH 1/2] fix: NumberParser useGrouping false returned wrong value

---
 packages/@internationalized/number/src/NumberParser.ts       | 3 ++-
 packages/@internationalized/number/test/NumberParser.test.js | 5 +++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/packages/@internationalized/number/src/NumberParser.ts b/packages/@internationalized/number/src/NumberParser.ts
index ae6448f027d..afbf40ef548 100644
--- a/packages/@internationalized/number/src/NumberParser.ts
+++ b/packages/@internationalized/number/src/NumberParser.ts
@@ -282,7 +282,8 @@ function getSymbols(locale: string, formatter: Intl.NumberFormat, intlOptions: I
     maximumSignificantDigits: 21,
     roundingIncrement: 1,
     roundingPriority: 'auto',
-    roundingMode: 'halfExpand'
+    roundingMode: 'halfExpand',
+    useGrouping: true
   });
   // Note: some locale's don't add a group symbol until there is a ten thousands place
   let allParts = symbolFormatter.formatToParts(-10000.111);
diff --git a/packages/@internationalized/number/test/NumberParser.test.js b/packages/@internationalized/number/test/NumberParser.test.js
index a9266d997cf..a279a08b98e 100644
--- a/packages/@internationalized/number/test/NumberParser.test.js
+++ b/packages/@internationalized/number/test/NumberParser.test.js
@@ -56,6 +56,11 @@ describe('NumberParser', function () {
       expect(new NumberParser('en-US', {style: 'decimal'}).parse('1abc')).toBe(NaN);
     });
 
+    it('should return NaN for invalid grouping', function () {
+      expect(new NumberParser('en-US', {useGrouping: false}).parse('1234,7')).toBe(12347);
+      expect(new NumberParser('de-DE', {useGrouping: false}).parse('1234.7')).toBe(12347);
+    });
+
     describe('currency', function () {
       it('should parse without the currency symbol', function () {
         expect(new NumberParser('en-US', {currency: 'USD', style: 'currency'}).parse('10.50')).toBe(10.5);

From 97d82db6be7850eec2c52cf265e4accc2fc734a4 Mon Sep 17 00:00:00 2001
From: Robert Snow <snowystinger@gmail.com>
Date: Fri, 24 Oct 2025 09:28:22 +1100
Subject: [PATCH 2/2] add typing and pasting test

---
 .../test/NumberField.test.js                      | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/packages/react-aria-components/test/NumberField.test.js b/packages/react-aria-components/test/NumberField.test.js
index d29514fe54c..c99c99c824d 100644
--- a/packages/react-aria-components/test/NumberField.test.js
+++ b/packages/react-aria-components/test/NumberField.test.js
@@ -189,4 +189,19 @@ describe('NumberField', () => {
     expect(input).not.toHaveAttribute('aria-describedby');
     expect(numberfield).not.toHaveAttribute('data-invalid');
   });
+
+  it('should not type the grouping characters when useGrouping is false', async () => {
+    let {getByRole} = render(<TestNumberField formatOptions={{useGrouping: false}} />);
+    let input = getByRole('textbox');
+
+    await user.keyboard('102,4');
+    expect(input).toHaveAttribute('value', '1024');
+
+    await user.clear(input);
+    expect(input).toHaveAttribute('value', '');
+
+    await user.paste('102,4');
+    await user.tab();
+    expect(input).toHaveAttribute('value', '1024');
+  });
 });