metamask-extension/ui/app/helpers/higher-order-components/with-modal-props/with-modal-props.js

import { connect } from 'react-redux';
import { hideModal } from '../../../store/actions';

const mapStateToProps = (state) => {
  const { appState } = state;
  const { props: modalProps } = appState.modal.modalState;

  return {
    ...modalProps,
  };
};

const mapDispatchToProps = (dispatch) => {
  return {
    hideModal: () => dispatch(hideModal()),
  };
};

export default function withModalProps(Component) {
  return connect(mapStateToProps, mapDispatchToProps)(Component);
}