[core] Remove useIsFocusVisible util

packages/mui-base/src/Menu/Menu.test.tsx

@@ -618,7 +618,12 @@ describe('<Menu />', () => {
     });
   });
 
-  it('perf: does not rerender menu items unnecessarily', async () => {
+  it('perf: does not rerender menu items unnecessarily', async function test() {
+    if (/jsdom/.test(window.navigator.userAgent)) {
+      // JSDOM doesn't support :focus-visible
+      this.skip();
+    }
+
     const renderItem1Spy = spy();
     const renderItem2Spy = spy();
     const renderItem3Spy = spy();

packages/mui-base/src/Select/Select.test.tsx

@@ -1265,7 +1265,12 @@ describe('<Select />', () => {
     expect(selectButton).to.have.text('1, 2');
   });
 
-  it('perf: does not rerender options unnecessarily', async () => {
+  it('perf: does not rerender options unnecessarily', async function test() {
+    if (/jsdom/.test(window.navigator.userAgent)) {
+      // JSDOM doesn't support :focus-visible
+      this.skip();
+    }
+
     const renderOption1Spy = spy();
     const renderOption2Spy = spy();
     const renderOption3Spy = spy();

packages/mui-base/src/Slider/Slider.test.tsx

@@ -368,7 +368,12 @@ describe('<Slider />', () => {
       expect(screen.getByTestId('value-label')).to.have.text('20');
     });
 
-    it('should provide focused state to the slotProps.thumb', () => {
+    it('should provide focused state to the slotProps.thumb', function test() {
+      if (/jsdom/.test(window.navigator.userAgent)) {
+        // JSDOM doesn't support :focus-visible
+        this.skip();
+      }
+
       const { getByTestId } = render(
         <Slider
           defaultValue={[20, 40]}

packages/mui-base/src/useButton/useButton.test.tsx

@@ -170,7 +170,12 @@ describe('useButton', () => {
         expect(handleClickExternal.callCount).to.equal(0);
       });
 
-      it('handles onFocusVisible and does not include it in the root props', () => {
+      it('handles onFocusVisible and does not include it in the root props', function test() {
+        if (/jsdom/.test(window.navigator.userAgent)) {
+          // JSDOM doesn't support :focus-visible
+          this.skip();
+        }
+
         interface WithFocusVisibleHandler {
           onFocusVisible: React.FocusEventHandler;
         }

packages/mui-base/src/useButton/useButton.ts

@@ -2,7 +2,7 @@
 import * as React from 'react';
 import {
   unstable_useForkRef as useForkRef,
-  unstable_useIsFocusVisible as useIsFocusVisible,
+  unstable_isFocusVisible as isFocusVisible,
 } from '@mui/utils';
 import {
   UseButtonParameters,
@@ -38,22 +38,11 @@ export function useButton(parameters: UseButtonParameters = {}): UseButtonReturn
 
   const [active, setActive] = React.useState<boolean>(false);
 
-  const {
-    isFocusVisibleRef,
-    onFocus: handleFocusVisible,
-    onBlur: handleBlurVisible,
-    ref: focusVisibleRef,
-  } = useIsFocusVisible();
-
   const [focusVisible, setFocusVisible] = React.useState(false);
   if (disabled && !focusableWhenDisabled && focusVisible) {
     setFocusVisible(false);
   }
 
-  React.useEffect(() => {
-    isFocusVisibleRef.current = focusVisible;
-  }, [focusVisible, isFocusVisibleRef]);
-
   const [rootElementName, updateRootElementName] = useRootElementName({
     rootElementName: rootElementNameProp ?? (href || to ? 'a' : undefined),
     componentName: 'Button',
@@ -68,9 +57,7 @@ export function useButton(parameters: UseButtonParameters = {}): UseButtonReturn
   };
 
   const createHandleBlur = (otherHandlers: EventHandlers) => (event: React.FocusEvent) => {
-    handleBlurVisible(event);
-
-    if (isFocusVisibleRef.current === false) {
+    if (!isFocusVisible(event.target)) {
       setFocusVisible(false);
     }
 
@@ -84,8 +71,7 @@ export function useButton(parameters: UseButtonParameters = {}): UseButtonReturn
         buttonRef.current = event.currentTarget;
       }
 
-      handleFocusVisible(event);
-      if (isFocusVisibleRef.current === true) {
+      if (isFocusVisible(event.target)) {
         setFocusVisible(true);
         otherHandlers.onFocusVisible?.(event);
       }
@@ -176,7 +162,7 @@ export function useButton(parameters: UseButtonParameters = {}): UseButtonReturn
       }
     };
 
-  const handleRef = useForkRef(updateRootElementName, externalRef, focusVisibleRef, buttonRef);
+  const handleRef = useForkRef(updateRootElementName, externalRef, buttonRef);
 
   interface AdditionalButtonProps {
     type?: React.ButtonHTMLAttributes<HTMLButtonElement>['type'];

packages/mui-base/src/useSlider/useSlider.ts

@@ -6,7 +6,7 @@ import {
   unstable_useEnhancedEffect as useEnhancedEffect,
   unstable_useEventCallback as useEventCallback,
   unstable_useForkRef as useForkRef,
-  unstable_useIsFocusVisible as useIsFocusVisible,
+  unstable_isFocusVisible as isFocusVisible,
   visuallyHidden,
   clamp,
 } from '@mui/utils';
@@ -265,32 +265,23 @@ export function useSlider(parameters: UseSliderParameters): UseSliderReturnValue
 
   const marksValues = (marks as Mark[]).map((mark: Mark) => mark.value);
 
-  const {
-    isFocusVisibleRef,
-    onBlur: handleBlurVisible,
-    onFocus: handleFocusVisible,
-    ref: focusVisibleRef,
-  } = useIsFocusVisible();
   const [focusedThumbIndex, setFocusedThumbIndex] = React.useState(-1);
 
   const sliderRef = React.useRef<HTMLSpanElement>();
-  const handleFocusRef = useForkRef(focusVisibleRef, sliderRef);
-  const handleRef = useForkRef(ref, handleFocusRef);
+  const handleRef = useForkRef(ref, sliderRef);
 
   const createHandleHiddenInputFocus =
     (otherHandlers: EventHandlers) => (event: React.FocusEvent) => {
       const index = Number(event.currentTarget.getAttribute('data-index'));
-      handleFocusVisible(event);
-      if (isFocusVisibleRef.current === true) {
+      if (isFocusVisible(event.target)) {
         setFocusedThumbIndex(index);
       }
       setOpen(index);
       otherHandlers?.onFocus?.(event);
     };
   const createHandleHiddenInputBlur =
     (otherHandlers: EventHandlers) => (event: React.FocusEvent) => {
-      handleBlurVisible(event);
-      if (isFocusVisibleRef.current === false) {
+      if (!isFocusVisible(event.target)) {
         setFocusedThumbIndex(-1);
       }
       setOpen(-1);

packages/mui-base/src/useSwitch/useSwitch.test.tsx

@@ -71,7 +71,12 @@ describe('useSwitch', () => {
       expect(handleChange.callCount).to.equal(1);
     });
 
-    it('should call focus event handlers if focus events are fired', () => {
+    it('should call focus event handlers if focus events are fired', function test() {
+      if (/jsdom/.test(window.navigator.userAgent)) {
+        // JSDOM doesn't support :focus-visible
+        this.skip();
+      }
+
       const handleBlur = spy();
       const handleFocus = spy();
       const handleFocusVisible = spy();

packages/mui-base/src/useSwitch/useSwitch.ts

@@ -3,7 +3,7 @@ import * as React from 'react';
 import {
   unstable_useControlled as useControlled,
   unstable_useForkRef as useForkRef,
-  unstable_useIsFocusVisible as useIsFocusVisible,
+  unstable_isFocusVisible as isFocusVisible,
 } from '@mui/utils';
 import { UseSwitchParameters, UseSwitchReturnValue } from './useSwitch.types';
 
@@ -51,22 +51,11 @@ export function useSwitch(props: UseSwitchParameters): UseSwitchReturnValue {
       otherProps.onChange?.(event);
     };
 
-  const {
-    isFocusVisibleRef,
-    onBlur: handleBlurVisible,
-    onFocus: handleFocusVisible,
-    ref: focusVisibleRef,
-  } = useIsFocusVisible();
-
   const [focusVisible, setFocusVisible] = React.useState(false);
   if (disabled && focusVisible) {
     setFocusVisible(false);
   }
 
-  React.useEffect(() => {
-    isFocusVisibleRef.current = focusVisible;
-  }, [focusVisible, isFocusVisibleRef]);
-
   const inputRef = React.useRef<HTMLInputElement | null>(null);
 
   const createHandleFocus =
@@ -77,8 +66,7 @@ export function useSwitch(props: UseSwitchParameters): UseSwitchReturnValue {
         inputRef.current = event.currentTarget;
       }
 
-      handleFocusVisible(event);
-      if (isFocusVisibleRef.current === true) {
+      if (isFocusVisible(event.target)) {
         setFocusVisible(true);
         onFocusVisible?.(event);
       }
@@ -90,17 +78,15 @@ export function useSwitch(props: UseSwitchParameters): UseSwitchReturnValue {
   const createHandleBlur =
     (otherProps: React.InputHTMLAttributes<HTMLInputElement>) =>
     (event: React.FocusEvent<HTMLInputElement>) => {
-      handleBlurVisible(event);
-
-      if (isFocusVisibleRef.current === false) {
+      if (!isFocusVisible(event.target)) {
         setFocusVisible(false);
       }
 
       onBlur?.(event);
       otherProps.onBlur?.(event);
     };
 
-  const handleInputRef = useForkRef(focusVisibleRef, inputRef);
+  const handleInputRef = useForkRef(inputRef);
 
   const getInputProps: UseSwitchReturnValue['getInputProps'] = (otherProps = {}) => ({
     checked: checkedProp,

packages/mui-joy/src/Link/Link.test.tsx

@@ -75,7 +75,12 @@ describe('<Link />', () => {
   });
 
   describe('keyboard focus', () => {
-    it('should add the focusVisible class when focused', () => {
+    it('should add the focusVisible class when focused', function test() {
+      if (/jsdom/.test(window.navigator.userAgent)) {
+        // JSDOM doesn't support :focus-visible
+        this.skip();
+      }
+
       const { container } = render(<Link href="/">Home</Link>);
       const anchor = container.querySelector('a');
 

packages/mui-joy/src/Link/Link.tsx

@@ -5,8 +5,7 @@ import { unstable_composeClasses as composeClasses } from '@mui/base';
 import { OverridableComponent } from '@mui/types';
 import {
   unstable_capitalize as capitalize,
-  unstable_useForkRef as useForkRef,
-  unstable_useIsFocusVisible as useIsFocusVisible,
+  unstable_isFocusVisible as isFocusVisible,
   unstable_isMuiElement as isMuiElement,
 } from '@mui/utils';
 import { unstable_extendSxProp as extendSxProp } from '@mui/system';
@@ -216,26 +215,17 @@ const Link = React.forwardRef(function Link(inProps, ref) {
 
   const level = nesting || inheriting ? inProps.level || 'inherit' : levelProp;
 
-  const {
-    isFocusVisibleRef,
-    onBlur: handleBlurVisible,
-    onFocus: handleFocusVisible,
-    ref: focusVisibleRef,
-  } = useIsFocusVisible();
   const [focusVisible, setFocusVisible] = React.useState<boolean>(false);
-  const handleRef = useForkRef(ref, focusVisibleRef) as React.Ref<HTMLAnchorElement>;
   const handleBlur = (event: React.FocusEvent<HTMLAnchorElement>) => {
-    handleBlurVisible(event);
-    if (isFocusVisibleRef.current === false) {
+    if (!isFocusVisible(event.target)) {
       setFocusVisible(false);
     }
     if (onBlur) {
       onBlur(event);
     }
   };
   const handleFocus = (event: React.FocusEvent<HTMLAnchorElement>) => {
-    handleFocusVisible(event);
-    if (isFocusVisibleRef.current === true) {
+    if (isFocusVisible(event.target)) {
       setFocusVisible(true);
     }
     if (onFocus) {
@@ -263,7 +253,7 @@ const Link = React.forwardRef(function Link(inProps, ref) {
       onBlur: handleBlur,
       onFocus: handleFocus,
     },
-    ref: handleRef,
+    ref,
     className: classes.root,
     elementType: LinkRoot,
     externalForwardedProps,

packages/mui-joy/src/ListItemButton/ListItemButton.test.tsx

@@ -56,7 +56,12 @@ describe('Joy <ListItemButton />', () => {
   });
 
   describe('prop: focusVisibleClassName', () => {
-    it('should have focusVisible classes', () => {
+    it('should have focusVisible classes', function test() {
+      if (/jsdom/.test(window.navigator.userAgent)) {
+        // JSDOM doesn't support :focus-visible
+        this.skip();
+      }
+
       const { getByRole } = render(<ListItemButton />);
       const button = getByRole('button');