[base-ui][NumberInput] Implement numberInputReducer (#38723)

Author: mj12albert

docs/pages/base-ui/api/number-input.json

@@ -41,7 +41,7 @@
     },
     "startAdornment": { "type": { "name": "node" } },
     "step": { "type": { "name": "number" } },
-    "value": { "type": { "name": "any" } }
+    "value": { "type": { "name": "number" } }
   },
   "name": "NumberInput",
   "imports": [

docs/pages/base-ui/api/use-number-input.json

@@ -40,7 +40,7 @@
     "required": { "type": { "name": "boolean", "description": "boolean" } },
     "shiftMultiplier": { "type": { "name": "number", "description": "number" } },
     "step": { "type": { "name": "number", "description": "number" } },
-    "value": { "type": { "name": "unknown", "description": "unknown" } }
+    "value": { "type": { "name": "number", "description": "number" } }
   },
   "returnValue": {
     "disabled": {

packages/mui-base/src/Unstable_NumberInput/NumberInput.tsx

@@ -307,7 +307,7 @@ NumberInput.propTypes /* remove-proptypes */ = {
   /**
    * The current value. Use when the component is controlled.
    */
-  value: PropTypes.any,
+  value: PropTypes.number,
 } as any;
 
 export { NumberInput };

packages/mui-base/src/unstable_useNumberInput/numberInputAction.types.ts

@@ -0,0 +1,44 @@
+export const NumberInputActionTypes = {
+  clamp: 'numberInput:clamp',
+  inputChange: 'numberInput:inputChange',
+  increment: 'numberInput:increment',
+  decrement: 'numberInput:decrement',
+  decrementToMin: 'numberInput:decrementToMin',
+  incrementToMax: 'numberInput:incrementToMax',
+} as const;
+
+interface NumberInputClampAction {
+  type: typeof NumberInputActionTypes.clamp;
+  inputValue: string;
+}
+
+interface NumberInputInputChangeAction {
+  type: typeof NumberInputActionTypes.inputChange;
+  inputValue: string;
+}
+
+interface NumberInputIncrementAction {
+  type: typeof NumberInputActionTypes.increment;
+  applyMultiplier: boolean;
+}
+
+interface NumberInputDecrementAction {
+  type: typeof NumberInputActionTypes.decrement;
+  applyMultiplier: boolean;
+}
+
+interface NumberInputIncrementToMaxAction {
+  type: typeof NumberInputActionTypes.incrementToMax;
+}
+
+interface NumberInputDecrementToMinAction {
+  type: typeof NumberInputActionTypes.decrementToMin;
+}
+
+export type NumberInputAction =
+  | NumberInputClampAction
+  | NumberInputInputChangeAction
+  | NumberInputIncrementAction
+  | NumberInputDecrementAction
+  | NumberInputIncrementToMaxAction
+  | NumberInputDecrementToMinAction;