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

Grumpy Goat answered on July 31, 2020 Popularity 9/10 Helpfulness 1/10

answer Argument of type 'InitialState' is not assignable to parameter of type 'never'

related Argument of type 'InitialState' is not assignable to parameter of type 'never'

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

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function reducer(state: IState, action: IFluxAction): IState {
   // reducer code
   // type errors are visible here 
}
// make sure to put the IState type as the return type of the function and
// the error will show inside the switch statement

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Source: stackoverflow.com

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Contributed on Nov 11 2021

Grumpy Goat

0 Answers Avg Quality 2/10

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

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I also struggled with this problem. The best way to prevent bugs seems to me to add the State Interface as the return type of the reducer. Then you see the type errors inside the reducer instead on the useReducer line.

like this:

function reducer(state: IState, action: IFluxAction): IState {
   // reducer code
   // type errors are visible here 
}

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Source: stackoverflow.com

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Contributed on Jul 31 2020

DevPedrada

0 Answers Avg Quality 2/10

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

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

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

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