redux-props-mapper.ts

import {connect} from 'react-redux';
import {bindActionCreators, ActionCreatorsMapObject} from 'redux';
import {RootState, Dispatch} from '../reducers';

export interface PropsMapper<StateProps, DispatchProps, OwnProps> {
  fromState: (state:RootState, ownProps:OwnProps) => StateProps;
  actions: (ownProps:OwnProps) => DispatchProps;
}

export type PropsOf<T> = T extends PropsMapper<infer StateProps, infer DispatchProps, infer OwnProps> 
  ? StateProps & DispatchProps & OwnProps 
  : never;

export function appConnect<
  StateProps, 
  DispatchProps extends ActionCreatorsMapObject, 
  OwnProps>(mapper:PropsMapper<StateProps, DispatchProps, OwnProps>) {
  return connect<StateProps, DispatchProps, OwnProps, RootState>(
    mapper.fromState, 
    (dispatch:Dispatch, ownProps:OwnProps) => bindActionCreators(mapper.actions(ownProps), dispatch)
  );
}