fix: number is duplicate when input number by keyboard's numeric keypad in Chrome

src/InputNumber.tsx

@@ -160,6 +160,7 @@ const InternalInputNumber = React.forwardRef(
     const userTypingRef = React.useRef(false);
     const compositionRef = React.useRef(false);
     const shiftKeyRef = React.useRef(false);
+    const imeCompositionRef = React.useRef(false);
 
     // ============================ Value =============================
     // Real value control
@@ -428,6 +429,9 @@ const InternalInputNumber = React.forwardRef(
 
     // >>> Input
     const onInternalInput: React.ChangeEventHandler<HTMLInputElement> = (e) => {
+      if (imeCompositionRef.current && !compositionRef.current) {
+          return;
+      }
       collectInputValue(e.target.value);
     };
 
@@ -498,6 +502,12 @@ const InternalInputNumber = React.forwardRef(
 
       shiftKeyRef.current = shiftKey;
 
+      if (event.key === 'Process' || compositionRef.current) {
+        imeCompositionRef.current = true;
+      } else {
+        imeCompositionRef.current = false;
+      }
+
       if (key === 'Enter') {
         if (!compositionRef.current) {
           userTypingRef.current = false;
@@ -543,6 +553,8 @@ const InternalInputNumber = React.forwardRef(
 
     // >>> Focus & Blur
     const onBlur = () => {
+      imeCompositionRef.current = false;
+
       if (changeOnBlur) {
         flushInputValue(false);
       }

tests/formatter.test.tsx

@@ -63,6 +63,72 @@ describe('InputNumber.Formatter', () => {
     expect(onChange).toHaveBeenCalledWith(100);
   });
 
+  it('formatter on IME numeric keypad input', () => {
+    const { container } = render(
+      <InputNumber formatter={(value) => `${value}`.replace(/\B(?=(\d{3})+(?!\d))/g, ',')} />
+    );
+    const input = container.querySelector('input');
+    fireEvent.focus(input);
+    fireEvent.compositionStart(input);
+    fireEvent.keyDown(input, {
+      which: 229,
+      key: 'Process',
+      code: 'Numpad1',
+      keyCode: 229,
+      composed: true,
+    });
+    fireEvent.change(input, { target: { value: '1' } });
+    fireEvent.keyDown(input, {
+      which: 229,
+      key: 'Process',
+      code: 'Numpad2',
+      keyCode: 229,
+      composed: true,
+    });
+    fireEvent.change(input, { target: { value: '12' } });
+    fireEvent.keyDown(input, {
+      which: 229,
+      key: 'Process',
+      code: 'Numpad3',
+      keyCode: 229,
+      composed: true,
+    });
+    fireEvent.change(input, { target: { value: '123' } });
+    fireEvent.keyDown(input, {
+      which: 229,
+      key: 'Process',
+      code: 'Numpad4',
+      keyCode: 229,
+      composed: true,
+    });
+    fireEvent.change(input, { target: { value: '1234' } });
+    fireEvent.keyDown(input, {
+      which: 229,
+      key: 'Process',
+      code: 'Enter',
+      keyCode: 229,
+      composed: true,
+    });
+    fireEvent.compositionEnd(input);
+    fireEvent.blur(input);
+    expect(input.value).toEqual('1,234');
+
+    fireEvent.focus(input);
+    fireEvent.compositionStart(input);
+    fireEvent.keyDown(input, {
+      which: 229,
+      key: 'Process',
+      code: 'Numpad5',
+      keyCode: 229,
+      composed: true,
+    });
+    fireEvent.change(input, { target: { value: '12345' } });
+    fireEvent.compositionEnd(input);
+    fireEvent.change(input, { target: { value: '1234' } });
+    fireEvent.blur(input);
+    expect(input.value).toEqual('12,345');
+  });
+
   it('formatter and parser', () => {
     const onChange = jest.fn();
     const { container } = render(