How does Redux Toolkit handle extraReducers with bracket notation for actions? For example:
const boostAmount = createAction('boostAmount');
createSlice({
name: 'scoreTracker',
initialState: 0,
extraReducers: { [boostAmount]: (state, action) => state + action.increment }
});
the extraReducers lets a slice respond to actions defined outside, letting u add logic for non-slice actions. its like hooking up global actions to change your slice state irrespective of wher the action came from.
ExtraReducers provides a clean mechanism to handle actions that weren’t necessarily defined within the slice. In my experience, it allows a slice to respond to globally declared actions, making it adaptable for integration scenarios where actions span across various slices or modules. The bracket notation isn’t just a shortcut; it accommodates dynamic keys by taking an action creator as the key directly, ensuring that any changes in the action object are immediately reflected. This setup enhances modularity and reduces boilerplate when coordinating multiple action sources.