From 26616337481ab2887013e4d38cd76b7534d1488b Mon Sep 17 00:00:00 2001
From: Beier Luo <bluebill1049@hotmail.com>
Date: Sun, 11 Dec 2022 18:32:28 +1100
Subject: [PATCH] =?UTF-8?q?=F0=9F=90=9E=20fix=20#9571=20validation=20issue?=
 =?UTF-8?q?=20with=20unregister=20input=20with=20valueAsNumber?=
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---
 src/__tests__/logic/validateField.test.tsx | 16 ++++++++++++++++
 src/logic/validateField.ts                 |  5 ++++-
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/src/__tests__/logic/validateField.test.tsx b/src/__tests__/logic/validateField.test.tsx
index 35ba933ec66..dbdfca19efe 100644
--- a/src/__tests__/logic/validateField.test.tsx
+++ b/src/__tests__/logic/validateField.test.tsx
@@ -57,6 +57,22 @@ describe('validateField', () => {
       },
     });
 
+    expect(
+      await validateField(
+        {
+          _f: {
+            valueAsNumber: true,
+            mount: true,
+            name: 'test',
+            ref: { name: 'test' },
+            required: 'required',
+          },
+        },
+        2,
+        false,
+      ),
+    ).toEqual({});
+
     expect(
       await validateField(
         {
diff --git a/src/logic/validateField.ts b/src/logic/validateField.ts
index 2591f66f8dd..13e66e4bc1d 100644
--- a/src/logic/validateField.ts
+++ b/src/logic/validateField.ts
@@ -17,6 +17,7 @@ import isObject from '../utils/isObject';
 import isRadioInput from '../utils/isRadioInput';
 import isRegex from '../utils/isRegex';
 import isString from '../utils/isString';
+import isUndefined from '../utils/isUndefined';
 
 import appendErrors from './appendErrors';
 import getCheckboxValue from './getCheckboxValue';
@@ -61,7 +62,9 @@ export default async <T extends NativeFieldValue>(
   const isCheckBox = isCheckBoxInput(ref);
   const isRadioOrCheckbox = isRadio || isCheckBox;
   const isEmpty =
-    ((valueAsNumber || isFileInput(ref)) && !ref.value) ||
+    ((valueAsNumber || isFileInput(ref)) &&
+      isUndefined(ref.value) &&
+      isUndefined(inputValue)) ||
     inputValue === '' ||
     (Array.isArray(inputValue) && !inputValue.length);
   const appendErrorsCurry = appendErrors.bind(