SolidJS•14mo ago

setState - typescript : Argument of type 'string' is not assignable to parameter of type 'never'

Receiving the following error:

Argument of type 'string' is not assignable to parameter of type 'never'

Argument of type 'string' is not assignable to parameter of type 'never'

for the line:

setState("user", "id", () => data.id);

setState("user", "id", () => data.id);

Context:

function createUserStoreDispatch(setState: SetStoreFunction<StoreState>): UserStoreDispatch {
    return {
        login(data: loginData) {
            batch(() => {
                setState("user", "id", () => data.id);
                // ...     ^ TYPESCRIPT ERROR
            });
        }
    }
}

function createUserStoreDispatch(setState: SetStoreFunction<StoreState>): UserStoreDispatch {
    return {
        login(data: loginData) {
            batch(() => {
                setState("user", "id", () => data.id);
                // ...     ^ TYPESCRIPT ERROR
            });
        }
    }
}

export type StoreState = {
    user: UserStore
} | object

export default function StoreProvider(props: any) {
    const [state, setState]: [Store<StoreState>, SetStoreFunction<StoreState>] = createStore<StoreState>({});

export type StoreState = {
    user: UserStore
} | object

export default function StoreProvider(props: any) {
    const [state, setState]: [Store<StoreState>, SetStoreFunction<StoreState>] = createStore<StoreState>({});

Why is the type "never" ?

1 Reply

Otonashi•14mo ago

because user can't index { user: UserStore } | object since it contains object

Gaming

Programming

setState - typescript : Argument of type 'string' is not assignable to parameter of type 'never'