Question

我正在更新项目中的依赖项（redux 4.0.1，redux-thunk 2.3.0，typescript 3.1.3），并且我很难在两个项目中都找到正确的类型以供redux-thunk使用动作声明作为我的mapDispatchToProps声明。

例如，我有以下操作：

正常的还原动作

export interface UpdateRowContent {
    type: typeof Actions.UPDATE_ROW_CONTENT;
    payload: React.ReactNode[];
}
export const updateRowContent: ActionCreator<Action> = (content: React.ReactNode[]) => {
    return { type: Actions.UPDATE_ROW_CONTENT, payload: content};
};

Redux-thunk动作

export interface ToggleModalShown {
    type: typeof Actions.TOGGLE_MODAL_SHOWN;
    payload: {
        isShown: boolean;
        targetType: TargetType;
        packageItemId?: string;
    };
}
export function toggleModalShown(
    isShown: boolean,
    targetType: TargetType,
    packageItemId?: string,
): any {
    return (dispatch: Dispatch<any>) => {
        if (isShown) {
            dispatch(clearForm());
        } else if (packageItemId) {
            dispatch(fillForm(packageItemId));
        }
        dispatch({
            type: Actions.TOGGLE_MODAL_SHOWN,
            payload: {isShown: isShown, targetType: targetType, packageItemId: packageItemId ? packageItemId : null},
        });
    };
}

我的mapDispatchToProps如下：

type DispatchType = Dispatch<Action> | ThunkDispatch<IState, any, Action>;

function mapDispatchToProps(dispatch: DispatchType) {
    return {
        updateRowContent: (content: React.ReactNode[]) => {
            dispatch(updateRowContent(content));
        },
        toggleModalShown: (isShown: boolean, targetType: TargetType) => {
            dispatch(toggleModalShown(isShown, targetType));
        },
    };
}

我在网上找到的所有内容都告诉我将mapDispatchToProps键入为ThunkDispatch<S,E,A>，这是我目前正在尝试做的事情。指南告诉我将实际的重击动作键入为ActionCreator<ThunkAction<R,S,E,A>>

当我尝试使用ActionCreator<ThunkAction<void,IState,any,Action>>代替any作为我的redux-thunk类型时，出现错误Argument of type 'ActionCreator<ThunkAction<void, GoState, any, Action<any>>>' is not assignable to parameter of type 'Action<any>'.

有什么想法吗？

Answer 1

好吧，我在调度输入中犯了一个愚蠢的错误...

type DispatchType = Dispatch<Action> | ThunkDispatch<IState, any, Action>;
function mapDispatchToProps(dispatch: DispatchType) {...}

应该是

type DispatchType = Dispatch<Action> & ThunkDispatch<IState, any, Action>;
function mapDispatchToProps(dispatch: DispatchType) {...}

修复后，我发现我的redux-thunk操作类型应该是

export function toggleModalShown(): ThunkAction<void, IState, any, Action> {...}

代替

export function toggleModalShown(): ActionCreator<ThunkAction<void, IState, any, Action>> {...}

如何使用Redux 4.0.1，Redux-Thunk 2.3.0和Typescript 3.1.3

1 个答案: