Accept object as connect's mapStateToProps argument?

[alsiola]

We can currently call connect with an object argument for mapDispatchToProps, where each function in the object is assumed to be an actioncreator. Could a similar option be available for mapStateToProps, where it would be assumed that each function in the object would be a selector? This could then be used as, for example:

import { connect } from 'react-redux';
import { actionCreator1, actionCreator2 } from './ActionCreators';
import { selector1, selector2 } user from './Selectors';
import PresentationalComponent from './PresentationalComponent';

export default connect(
    { 
        selector1,
        selector2
    },
    {
        actionCreator1,
        actionCreator2
    }    
)( PresentationalComponent );

I am currently achieving this with the following:

import { connect } from 'react-redux';

export default (originalStateToProps, dispatchToProps) => {

    let updatedStateToProps = originalStateToProps;

    if (typeof originalStateToProps !== "function") {
        updatedStateToProps = (state, ownProps) => {
            let mappedProps = {};
            for (const key in originalStateToProps) {
                if (originalStateToProps.hasOwnProperty(key)) {
                    mappedProps[key] = originalStateToProps[key](state, ownProps);
                }
            }
            return mappedProps;
        }
    }   
    
    return connect( updatedStateToProps, dispatchToProps );
}

[jimbolla]

See #323