And yes, `createSlice` explicitly supports responding to actions that were defined elsewhere in the app, using the `extraReducers` argument:
https://redux-toolkit.js.org/api/createSlice#extrareducers
Although... are you saying that you want one reducer function to handle many different actions in one slice? Just define the reducer outside the slice itself, and pass it as the handler for each action:
createSlice({
name: "someSlice",
initialState,
reducers: {
action1: someCaseReducer,
action2: someCaseReducer,
}
})