When using TypeScript and the redux toolkit, the createSlice function encountered an issue with assigning a value to the 'state' parameter of a function

Hey there, I'm encountering an issue with my estlint:

Assignment to property of function parameter 'state'. eslintno-param-reassign

It's pointing to this particular code snippet:

state.sideisOpen = action.payload;

interface SideBar {
  sideisOpen: boolean;
}

const INITIAL_STATE: SideBar = {
  sideisOpen: true,
};

const sideBar = createSlice({
  name: 'toggleSide',
  initialState: INITIAL_STATE,
  reducers: {
    toggleSide: (state, action: PayloadAction<boolean>) => {
      state.sideisOpen = action.payload;
    },
  },
});

export const { toggleSide } = sideBar.actions;
export { sideBar };

Answer №1

We recommend modifying your .eslintrc file to adjust the strictness of the rule based on your specific requirements:

// .eslintrc
'no-param-reassign': ['error', {
      props: true,
      ignorePropertyModificationsFor: [
        'state',
      ]
    }],

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