corrupted CreateSliceOptions types @reduxjs/toolkit

Question

Using reducers in my slice instance ( redux/toolkit ) I get this error.
'reducers' does not exist in type 'CreateSliceOptions<unknown, SliceCaseReducers<unknown>, string>'.ts(2345)
Instead of reducers, addPermissions exits in type (CreateSliceOptions).
I guess something might have gone wrong with my typescript types

code:

import { createSlice } from "@reduxjs/toolkit";

interface IPermission {}

interface IState {
    userPermissions: IPermission[];
}

export const initialState: IState = {
    userPermissions: localStorage.getItem("token") ? [] : [],
};

export const permissionSlice = createSlice({
    name: "permissions",
    initialState,
    reducers: {
        addPermission: (state: any, action: any) => {
            state.userPermissions = action.payload;
        },
    },
});

export const { addPermission } = permissionSlice.actions;
export default permissionSlice.reducer;

Answer 1

This was caused by corrupted redux node_modules. I removed all redux node_modules and reinstalled them, which fixed the problem.