[Slider] Narrow onChange value type

docs/data/material/components/slider/ContinuousSlider.tsx

@@ -8,8 +8,8 @@ import VolumeUp from '@mui/icons-material/VolumeUp';
 export default function ContinuousSlider() {
   const [value, setValue] = React.useState<number>(30);
 
-  const handleChange = (event: Event, newValue: number | number[]) => {
-    setValue(newValue as number);
+  const handleChange = (event: Event, newValue: number) => {
+    setValue(newValue);
   };
 
   return (

docs/data/material/components/slider/CustomMarks.tsx

@@ -18,8 +18,8 @@ const marks = [
 
 export default function CustomMarks() {
   const [val, setVal] = React.useState<number>(MIN);
-  const handleChange = (_: Event, newValue: number | number[]) => {
-    setVal(newValue as number);
+  const handleChange = (_: Event, newValue: number) => {
+    setVal(newValue);
   };
 
   return (

docs/data/material/components/slider/InputSlider.tsx

@@ -14,8 +14,8 @@ const Input = styled(MuiInput)`
 export default function InputSlider() {
   const [value, setValue] = React.useState(30);
 
-  const handleSliderChange = (event: Event, newValue: number | number[]) => {
-    setValue(newValue as number);
+  const handleSliderChange = (event: Event, newValue: number) => {
+    setValue(newValue);
   };
 
   const handleInputChange = (event: React.ChangeEvent<HTMLInputElement>) => {

docs/data/material/components/slider/MinimumDistanceSlider.js

@@ -12,10 +12,6 @@ export default function MinimumDistanceSlider() {
   const [value1, setValue1] = React.useState([20, 37]);
 
   const handleChange1 = (event, newValue, activeThumb) => {
-    if (!Array.isArray(newValue)) {
-      return;
-    }
-
     if (activeThumb === 0) {
       setValue1([Math.min(newValue[0], value1[1] - minDistance), value1[1]]);
     } else {
@@ -26,10 +22,6 @@ export default function MinimumDistanceSlider() {
   const [value2, setValue2] = React.useState([20, 37]);
 
   const handleChange2 = (event, newValue, activeThumb) => {
-    if (!Array.isArray(newValue)) {
-      return;
-    }
-
     if (newValue[1] - newValue[0] < minDistance) {
       if (activeThumb === 0) {
         const clamped = Math.min(newValue[0], 100 - minDistance);

docs/data/material/components/slider/MinimumDistanceSlider.tsx

@@ -11,15 +11,7 @@ const minDistance = 10;
 export default function MinimumDistanceSlider() {
   const [value1, setValue1] = React.useState<number[]>([20, 37]);
 
-  const handleChange1 = (
-    event: Event,
-    newValue: number | number[],
-    activeThumb: number,
-  ) => {
-    if (!Array.isArray(newValue)) {
-      return;
-    }
-
+  const handleChange1 = (event: Event, newValue: number[], activeThumb: number) => {
     if (activeThumb === 0) {
       setValue1([Math.min(newValue[0], value1[1] - minDistance), value1[1]]);
     } else {
@@ -29,15 +21,7 @@ export default function MinimumDistanceSlider() {
 
   const [value2, setValue2] = React.useState<number[]>([20, 37]);
 
-  const handleChange2 = (
-    event: Event,
-    newValue: number | number[],
-    activeThumb: number,
-  ) => {
-    if (!Array.isArray(newValue)) {
-      return;
-    }
-
+  const handleChange2 = (event: Event, newValue: number[], activeThumb: number) => {
     if (newValue[1] - newValue[0] < minDistance) {
       if (activeThumb === 0) {
         const clamped = Math.min(newValue[0], 100 - minDistance);
@@ -47,7 +31,7 @@ export default function MinimumDistanceSlider() {
         setValue2([clamped - minDistance, clamped]);
       }
     } else {
-      setValue2(newValue as number[]);
+      setValue2(newValue);
     }
   };
 

docs/data/material/components/slider/MusicPlayerSlider.tsx

@@ -120,7 +120,7 @@ export default function MusicPlayerSlider() {
           min={0}
           step={1}
           max={duration}
-          onChange={(_, value) => setPosition(value as number)}
+          onChange={(_, value) => setPosition(value)}
           sx={(t) => ({
             color: 'rgba(0,0,0,0.87)',
             height: 4,

docs/data/material/components/slider/NonLinearSlider.js

@@ -25,9 +25,7 @@ export default function NonLinearSlider() {
   const [value, setValue] = React.useState(10);
 
   const handleChange = (event, newValue) => {
-    if (typeof newValue === 'number') {
-      setValue(newValue);
-    }
+    setValue(newValue);
   };
 
   return (

docs/data/material/components/slider/NonLinearSlider.tsx

@@ -24,10 +24,8 @@ function calculateValue(value: number) {
 export default function NonLinearSlider() {
   const [value, setValue] = React.useState<number>(10);
 
-  const handleChange = (event: Event, newValue: number | number[]) => {
-    if (typeof newValue === 'number') {
-      setValue(newValue);
-    }
+  const handleChange = (event: Event, newValue: number) => {
+    setValue(newValue);
   };
 
   return (

docs/data/material/components/slider/RangeSlider.tsx

@@ -9,8 +9,8 @@ function valuetext(value: number) {
 export default function RangeSlider() {
   const [value, setValue] = React.useState<number[]>([20, 37]);
 
-  const handleChange = (event: Event, newValue: number | number[]) => {
-    setValue(newValue as number[]);
+  const handleChange = (event: Event, newValue: number[]) => {
+    setValue(newValue);
   };
 
   return (

docs/pages/material-ui/api/slider.json

@@ -58,14 +58,14 @@
     "onChange": {
       "type": { "name": "func" },
       "signature": {
-        "type": "function(event: Event, value: number | Array<number>, activeThumb: number) => void",
+        "type": "function(event: Event, value: Value, activeThumb: number) => void",
         "describedArgs": ["event", "value", "activeThumb"]
       }
     },
     "onChangeCommitted": {
       "type": { "name": "func" },
       "signature": {
-        "type": "function(event: React.SyntheticEvent | Event, value: number | Array<number>) => void",
+        "type": "function(event: React.SyntheticEvent | Event, value: Value) => void",
         "describedArgs": ["event", "value"]
       }
     },

docs/src/components/productMaterial/MaterialHero.tsx

@@ -183,7 +183,7 @@ function SlideDemo() {
       <Slider
         aria-labelledby="temperature-slider"
         value={value}
-        onChange={(_, newValue) => setValue(newValue as number[])}
+        onChange={(_, newValue) => setValue(newValue)}
       />
       <LocalFireDepartment
         fontSize="small"

docs/src/components/x-grid/EditProgress.tsx

@@ -31,8 +31,8 @@ export default function EditProgress(props: GridRenderEditCellParams) {
     [updateCellEditProps],
   );
 
-  const handleChange = (event: Event, newValue: number | number[]) => {
-    setValueState(newValue as number);
+  const handleChange = (event: Event, newValue: number) => {
+    setValueState(newValue);
     debouncedUpdateCellEditProps(newValue);
   };
 

packages/mui-material/src/Slider/Slider.d.ts

@@ -20,7 +20,7 @@ export interface SliderOwnerState extends SliderProps {
   focusedThumbIndex: number;
 }
 
-export interface SliderOwnProps {
+export interface SliderOwnProps<Value extends number | number[]> {
   /**
    * The label of the slider.
    */
@@ -93,7 +93,7 @@ export interface SliderOwnProps {
   /**
    * The default value. Use when the component is not controlled.
    */
-  defaultValue?: number | number[];
+  defaultValue?: Value;
   /**
    * If `true`, the component is disabled.
    * @default false
@@ -148,17 +148,17 @@ export interface SliderOwnProps {
    * @param {Event} event The event source of the callback.
    * You can pull out the new value by accessing `event.target.value` (any).
    * **Warning**: This is a generic event not a change event.
-   * @param {number | number[]} value The new value.
+   * @param {Value} value The new value.
    * @param {number} activeThumb Index of the currently moved thumb.
    */
-  onChange?: (event: Event, value: number | number[], activeThumb: number) => void;
+  onChange?: (event: Event, value: Value, activeThumb: number) => void;
   /**
    * Callback function that is fired when the `mouseup` is triggered.
    *
    * @param {React.SyntheticEvent | Event} event The event source of the callback. **Warning**: This is a generic event not a change event.
-   * @param {number | number[]} value The new value.
+   * @param {Value} value The new value.
    */
-  onChangeCommitted?: (event: React.SyntheticEvent | Event, value: number | number[]) => void;
+  onChangeCommitted?: (event: React.SyntheticEvent | Event, value: Value) => void;
   /**
    * The component orientation.
    * @default 'horizontal'
@@ -246,7 +246,7 @@ export interface SliderOwnProps {
    * The value of the slider.
    * For ranged sliders, provide an array with two values.
    */
-  value?: number | number[];
+  value?: Value;
   /**
    * Controls when the value label is displayed:
    *
@@ -275,11 +275,20 @@ export interface SliderOwnProps {
 export interface SliderTypeMap<
   RootComponent extends React.ElementType = 'span',
   AdditionalProps = {},
+  Value extends number | number[] = number | number[],
 > {
-  props: AdditionalProps & SliderOwnProps;
+  props: AdditionalProps & SliderOwnProps<Value>;
   defaultComponent: RootComponent;
 }
 
+export type SliderComponent<Value extends number | number[]> = OverridableComponent<
+  SliderTypeMap<'span', {}, Value>
+>;
+
+export type SliderType = SliderComponent<number> &
+  SliderComponent<number[]> &
+  SliderComponent<number | number[]>;
+
 export interface SliderValueLabelProps extends React.HTMLAttributes<HTMLSpanElement> {
   children: React.ReactElement<unknown>;
   index: number;
@@ -312,7 +321,7 @@ export declare const SliderValueLabel: React.FC<SliderValueLabelProps>;
  *
  * - [Slider API](https://mui.com/material-ui/api/slider/)
  */
-declare const Slider: OverridableComponent<SliderTypeMap>;
+declare const Slider: SliderType;
 
 export type SliderProps<
   RootComponent extends React.ElementType = SliderTypeMap['defaultComponent'],

packages/mui-material/src/Slider/Slider.js

@@ -1037,15 +1037,15 @@ Slider.propTypes /* remove-proptypes */ = {
    * @param {Event} event The event source of the callback.
    * You can pull out the new value by accessing `event.target.value` (any).
    * **Warning**: This is a generic event not a change event.
-   * @param {number | number[]} value The new value.
+   * @param {Value} value The new value.
    * @param {number} activeThumb Index of the currently moved thumb.
    */
   onChange: PropTypes.func,
   /**
    * Callback function that is fired when the `mouseup` is triggered.
    *
    * @param {React.SyntheticEvent | Event} event The event source of the callback. **Warning**: This is a generic event not a change event.
-   * @param {number | number[]} value The new value.
+   * @param {Value} value The new value.
    */
   onChangeCommitted: PropTypes.func,
   /**

packages/mui-material/src/Slider/Slider.spec.tsx

@@ -70,3 +70,27 @@ function testOnChange() {
     thumb: ({ orientation }) => ({ className: orientation === 'vertical' ? 'thumb_vertical' : '' }),
   }}
 />;
+
+// value, onChange, and onChangeCommitted value type
+<Slider
+  value={5}
+  onChange={(event, value: number) => {}}
+  onChangeCommitted={(event, value: number) => {}}
+/>;
+<Slider
+  value={[5, 10]}
+  onChange={(event, value: number[]) => {}}
+  onChangeCommitted={(event, value: number[]) => {}}
+/>;
+
+const CustomComponent: React.FC<{ stringProp: string; numberProp: number }> =
+  function CustomComponent() {
+    return <div />;
+  };
+
+<Slider component="div" />;
+<Slider component={CustomComponent} stringProp="a" numberProp={1} />;
+/* @ts-expect-error missing stringProp and numberProp */
+<Slider component={CustomComponent} />;
+/* @ts-expect-error does not allow any prop */
+<Slider abc="123" />;