Function useReducer

useReducer(
    name: string,
    callback: ReducerCallback,
    defaultValue?: any,
): [StateGetter, ReducerCallback]
A function for managing state, similar to useState. This function takes a reducer function, applying unique logic when setting the value of the managed state. The callback function triggered by this function processes an optional action parameter, allowing you to pass in values which influnce your reducer's update logic. The managed state is globally available.
Parameters
- name: string
  the name of the state to be managed.
- callback: ReducerCallback
  the callback function to trigger when setting the value of the state.
- OptionaldefaultValue: any
  optional; the default value of the state.
Returns [StateGetter, ReducerCallback]
A getter and setter function for the managed state.
Example
```
function foo() {
     const [getCounter, incCounter] = useReducer("counter", (incrementBy: number) => {
         return getCounter() + incrementBy;
     }, 2);

     incCounter(1); // Increments 'counter' by 1, counter = 3
}
```
- Defined in index.ts:165