关于javascript：如何为Redux连接的组件自动生成Typescript接口

How to automatically generate typescript interfaces for redux connected components

是否可以使用mapStateToProps和mapDispatchToProps类型自动扩展连接组件的接口？例如，以下代码：

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interface ComponentProps {
state?: State;
action?: (id: string) => void;
}

const mapStateToProps = (state: any) => ({
state: state,
});

const mapDispatchToProps = (dispatch: any) => ({
action: (id: string) => dispatch(Action),
});

const Component = (props: ComponentProps) => ...;

export const ConnectedComponent = connect(
mapStateToProps,
mapDispatchToProps,
)(Component);

要求我将state和action作为可选道具添加到我的ComponentProps中，以便在我的组件中使用它们，因为道具将由connect HOC分配。

当使用诸如materialUI及其withStyles HOC之类的东西时，我们可以使用WithStyles<typeof styles>将classes属性(具体取决于styles的确切键)自动添加到我们的界面中，例如

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ComponentProps extends WithStyles<typeof styles> {
actualProps: any;
}

const ConnectedComponent = withStyles(styles)(Component);

是否可以对connect做同样的事情？

这是react-redux-typescript-guide中的操作方法：

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import Types from 'MyTypes';
import { bindActionCreators, Dispatch } from 'redux';
import { connect } from 'react-redux';
import * as React from 'react';

import { countersActions } from '../features/counters';

// Thunk Action
const incrementWithDelay = () => async (dispatch: Dispatch): Promise<void> => {
setTimeout(() => dispatch(countersActions.increment()), 1000);
};

const mapStateToProps = (state: Types.RootState) => ({
count: state.counters.reduxCounter,
});

const mapDispatchToProps = (dispatch: Dispatch<Types.RootAction>) =>
bindActionCreators(
{
onIncrement: incrementWithDelay,
},
dispatch
);

type Props = ReturnType<typeof mapStateToProps> &
ReturnType<typeof mapDispatchToProps> & {
label: string;
};

export const FCCounter: React.FC<Props> = props => {
const { label, count, onIncrement } = props;

const handleIncrement = () => {
// Thunk action is correctly typed as promise
onIncrement().then(() => {
// ...
});
};

return (

<span>
{label}: {count}
</span>
<button type="button" onClick={handleIncrement}>
{`Increment`}
</button>

);
};

export const FCCounterConnectedBindActionCreators = connect(
mapStateToProps,
mapDispatchToProps
)(FCCounter);

您应该使用ReturnType助手：

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type Props = ReturnType<typeof mapStateToProps> & ReturnType<typeof mapDispatchToProps> {
label: string;
};